Document 10VoQ7Ln3Yb9Q77QkQGJd6Ze5

FILE NAME: Garlock (GAR) DATE: 1981 DOC#: GAR040 DOCUMENT DESCRIPTION: Journal Articles RE Asbestos-free Gaskets B l u e -G a r d m akes the new s! Acrylic gasketing matches asbestos' performance The use 01' asbestos in sealing applica tions is becoming more ana more expen sive as federal regulations concerning its use increase and grow more complex. Many employers are also expressing con cern that employee moraie and produetivitv are jeopardized by the health con cerns surrounding asbestos. Oarlock Inc's Mechanical Packing Div has developed what they see as a viable alternative to asbestos gasketing. In lab oratory and lield testing under service conditions. 8lue-Gard compressed gas keting has proved that it has sufficient chemical resistance to prevent change in us physical properties, does not contami nate the fluid being handled, does not promote corrosion of flanges, and is capable of withstanding boll pressure without crushing or undergoing excessive plastic flow. In addition, the gasketing has been succcssfullv tested in over industrial applications. The gasketing is made of acrylic noer combined with a nitriio rubber bmdinu that reportedly is delormaole enougn to distribute pressure cveniv over surfaces. It also has an elasticity that enables u to maintain an adequate portion of a load when joint movements are not fully elim inated. The gasketing is manufactured using the traditional shccier method, and is available in four thicknesses: '/>;. 'M. Vu. and 'A in., and in sheet sizes of 60 x ot) in. or 60 X 120 in. It can withstand pressures of oOO psi or temperatures to 700F. For more information, circle number 264 on the Reader Service Card. --Garlock Inc. Mechanical Packing Div. (continues on p 881 Nonasbestos gasket meets asbestos specs New une of nonasoestos gasxeting seals as effectively as asoesios n most aopiications. Called Blue-Gara. tne gasxetmg's comoosed ot acrync fioer ana a nitnie-oiocer cmaer. vianufacturea oy me raaiticnal sneeter method, the material meets most ot me aSTM F 'OF soecuications 'cr comoressea asoestos gasxeting. =kiysicai orocemes mciuce maximum 'eaxage of 0 8 mi r. comoressiouity of " :o : 7% ana minimum -eccverv 40% ~'~e material 'esists Muias :i o r :o ' 1 Sheets are avauaoie n micxnesses :: ' 22 ' ' 6. 2 22. ana 3 n . 3r.ee: sizes are 80 - SO r ara 20 '20 r Gartock Mechanical Packing Oiv.. ' 568 Division St : aimvra. N ' '4=22 Z .'c:e 599 .- n u s v : :-8- fT \odr\in e b i a n TECHNOLOGY DEVELOPMENT NEWS FROM AROUNI New Orleans. LA. . . Babcock i Wilcox announced recently it has successfully burned a new coal-and-water slurry called Co-AI. The high solid slurry, containing 71 percent eastern bituminous coals, can be transported like a liquid fuel and burned without any expensive dewateringjPalmyra. N Y .. . . Garlock's Mechanical Packing Division spent two years on a research project to develop a nonasbestos gasketing material which would seal as effectively as asbestos in most applications. The result is Blue-Gard which goes on the market this month. It should eliminate the need for industry to meet the rigid and expensive government standards that are applicable to the use of asbestos. The material is said to possess ail of the properties which make white asbestos good for gas keting purposes. Blue-Gard is composed of an acrylic fiber and nitrile rubber binder. Circle 353 for detaiSTj Everett. MA___ Avco Everett Research Laboratory and Ebara Corporation of Japan have signed a cross-licensing agreement covering the so-called E-Beam dry scrubber. The system uses an electron beam to irradiate flue gas which has been treated with ammonia. The single process POLLUTION ENGINEERING ` I*I Compressed A s b e s to s -F re e Gasketing Ten-page brochure with six additional information sheets presents information on a compressed asbestos-free gasketing material said to seal as effectively as asbestos in most applications. The mate rial is designed for use with temperatures to 700 F and is available in thicknesses to H in. and sheet sizes of 60 x 60 and 60 x 120 in. Technical data and information on federal regulations governing the pro duction and use of materials containing asbestos are included. Mechanical Pack ing Div.. Garlock. Circle 106 on Post Card P l M Non-asbestos gasketing. Catalog GSK-300.8 pp. Contains a comparison ch an th at shows up the advantages of Blue-Gard compressed gasketing over compressed asbestos, citing ASTM test method, physical properties and typical data. Garlock ` Ci rcl e 432 0 tM iQr) c jn q ? i u / ? i New Gasket Material KOs Asbestos NooMbMto* gMkating atuMtra canxxesseo nonasoestos gasneonq evm- natat prooiarm vs meeong OSHA and EPA asoesios Tfcltuchcn Snqr 48/ standards. The gasMtng a canonical and fae- GAPLIo re Orda 138 More and more, asbestos ments (like in some off-highway uses) materials are becoming envi and strong acids ronmentally. and therefore But Whittaker points out that one com m ercially, taboo. Al- supplier tested Blue-Gard in sulphuric * though a number of brake acid. "It passed with results similar to pad m anufacturers have our best compressed asbestos." adds knocked asbestos out of their Whittaker. With a second generation acts, no gasket manutacturer material Carlock plans to take care of has announced a compressed high-acid applications too. sheet substitute until Blue-Gard costs 1557 more than Gar- now lock s premium grade. Nevertheless, " Blue-Card can replace as says Whittaker. "We fee! we will be bestos sheet in 85-95% of all very competitive with this Although applications, claims Rov acrylic is considerably more expensive Whittaker, director of engi neering Mechanical Packing Div.. Garlock Inc. Palmyra. NY Blue-Gard. a compressed non-asbestos sheet is com posed of acrvlic fiber com bined with a nitrile binder. The binder is typical of asbestos sheet. Whittaker sa\s the gasket ing material is now being tested in at least 50 field ap plications. including engine and exhaust areas. The mate than asbestos the cost of meeting gov ernment regulations for asbestos fiber narrow the cost margin. According to Whittaker, at least one major U.S. automaker and one off-highway OEM want to eliminate all han dling of asbestos bv their workers. For this reason, as well as for cost consid erations Garlock Intends to be com pletely out of the compressed asbestos market bv December 31. 1981. It has also announced plans to place more em phasis on original equipment markets. --Jennifer Vf George rial mav have problems meeting high swell require<ContmueO) $t_rTCrvrr!V<L ! r-yj; i-yri-'P S la. | NON-ASBESTOS GASKETING has been introduced by Garlock Mechanical Packing Div.. Palmyra. N.Y.. to m eet the needs of industries faced with rigid government regu lation of asbestos. Blue-Gard Gasketing is composed of acrylic fiber combined with a ni trile rubber binder. Manufactured by the traditional sheeter method, it meets most of the ASTM F 104 specifications lor compressed as bestos gasketing and has been test ed satisfactorily on the job. Garlock reports. Laboratory testing, the company says, dem onstrated that the gasket ing performed at a level rivaling white asbestos. Tests showed that Blue-Gard had sufficient chemical resistance to prevent im pairm ent of its physical properties, does not con taminate the fluid being handled, does not promote corrosion of the flanges with which it makes contact and is capable of w ithstanding bolt pressure without crushing or under going excessive plastic flow. It is su ffic ie n tly d efo rm ab le, without resorting to excessive thick ness to distribute the applied pres sure eveniv over surfaces to com pensate for normal irregularities. Sheet sizes are: 60 x 60 in. and 60 x 120 in. Thicknesses are: l-iz *-1. `x in. Circle 281 on inquiry Card (jyiU 7ijLA.< tLaJ C ix slU L L U tJ L dL/7- *91 Asbestos-free gaskets rivai the asbestos type Although most of the gaskets used in this country still contain asbestos, and in substantial quantity, there are sev- , , ... eral pressing reasons tor considering the asbestos-free vanety: the belief by many that asbestos is carcinogenic or otherwise detrimental to health: the rising cost implementing and monitor- ing preventive health programs; ana scarcity of the material. Two such types meriting attention were recently in- dubbed ? ai_SAl. is the latest addition to the Palviet'C line by Greene. Tweed Vfic vCwo.. Ii.N' Wortthu W" aailcess,. lPA.1 1i.. AAUltUhUoUug^IhI soft 5noueh for eiaa8 joint9, and sufficient_ , iiab(e M be instaiJed in seconds. even on compiex configurationa. it handle pre99Ure9 in exce99 of 2000 psi ^ js e9Deciailv resistant co environ_ menCai extremes, according to the com- pany. For example, it is said to be S l e for use at tem perltures as low Ced` L , One. available j n ^sheet stoca for stamped and die-cut gaskets, is called aLUE GARD. Developed by the Meehan- as -450 F or as high as 500 F -6 0 0 F for 9bort p e r i l s 0f time--and with all ftilwutivdws ev.xvwcevpvt tVhUoV^seV containing UfrCeCe nuorine or alkali raetals. Funherm ore. teal Packing Division of Garlock tPalmyra. NYl, the m aterial has a lot going tfeostr* iift. Cf'rotmif npnonsieudj aof aeAcMry*lliAc f*<ibaearms in a nitrile binder, it has a temperature limit of TOO F. sustains pressures up to 1000 psi, is non-contaminating to fluids ana non-corrosive to contact flanges, and withstands required bolt pressures without cracking or ex :he comoanv adds, it is non-toxic, nonnammabie and ,,on-contaminating to fluids. PALSEAL comes in seven sizes rang ing from 1 mm to xi in. diameter. A 50-ft length of the '4-in. material goes for $69. f o r mor6 on BLUE.G A m drcle m cessive plastic flow. The material is sufficiently deformable to distribute applied pressures eveniy over normal surface irregularities without resort T r9 u c.ft n E n q r i /?1 * ree nonasbestos gasket sample ing to excessive thickness, says Roy Whittaker, engineering director, yet elastic enough to maintain much of the applied loads when joint designs do not fully preclude movement. The material has a density of 100 Ib/cu ft. a compressibility range of 7% to 17%. 40% recovery, and will resist 180-deg, 12T bends without cracking. In terms of sealability. maximum leakage is only 0.8 mm/ hr. Five-hour immersion in ASTM No. 3 oil at 300 F results in 0% to 13% swell and a max imum tensile loss of 50%. The same immersion period in ASTM Fuel B in duces a 0% to 15% increase in thickness and a maximum weight gain of 20%. It is also resistant to alkaline solutions in the 1 ph to 11 ph range. SLUE GARD. which is available only from Gariock's distributors, comes in 60 in. a 60 in. and 60 in. x 120 in. sheet and thicknesses of 1/32 in.. 1/16 in.. 3/32 in. and A in. thick. Suggested resale price (the price from dis tributors! for 1/16 in. x 60 in. a 60 in. stock is roughly $90/sheet. The second product, a continuouscord poiytetrafluoroethyiene materiai DESIGN ENGINEERING January 198" Blue-Gard compressed nonasbes tos gasketing can seal as effec tively as asbestos in m ost applica tions. according to its m anufac tu rer. It is m ade of acrylic fiber com bined w ith a n itrile rubber binder. Lab tests show th a t it has enough chem ical resistan ce to prevent im pairm ent of physical properties, does not prom ote flange corrosion, and can w ith stand needed boit pressure w ith out crushing or excessive plastic flow. Fieid tests confirm lab tests. The m a te ria i com es in 1.32 to '-in. th ick n esses an d 60 by 60 or 60 by 120-in. sheets. Special shapes can be fab rica te d -- G ariock M echanical P ack in g Div.. Colt In d u strie s. Palmvra. y .Y Making gaskets without asbestos Very lie fibers .uul .i mmle uir>r>ei binuer .ire comnined m .i nonasbes tos gasketing that meeis most of ihe ASTM F-104 speeiticaiions for com pressed asbeslos gasketing. claims Colt Industries Inc.'s Garlock Me chanical Packing Div.. Palmyra. N. Y. The new material has a lower tensile strength than compressed as bestos. but its sealing ability is as good as that of asbestos, says Gar lock. Other physical characteristics are identical to those ot' asbestos sheet: and joint design remains about the same, say company experts. Small business will likely still want the asbestos, but larger firms wiil want the substitute, -ays Garlock. Circle 111. inpu5T 2.V L J k 1 'lilc.18) Gasketing_______ has no asbestos Compressed gasketing materiai seals as effectively as asbestos without its hazards or need to meet government regulations. Blue-Gard is made of acrylic fi ber with a nitrile rubber binder. It meets most of the ASTM F 104 . specifications for com pressed asbestos gasketing, and is chem ically resistant and noncon taminating. It can take required bolt pressure without crushing or undergoing excessive plastic flow. Gariock. Inc. 1666 Division St. Palmyra. NY 14522 3 lb I Write h jr g 872 Asbestos: Enter new substitutes Although the U.S. isn't contemplating swift action to further restrict asbestos use, makers and buyers of asbestos gaskets and seals are seriously considering some new replacements. The motivation: pressure from labor. " The recent emergence of several new asbestos substitutes--featuring synthetic fibers and metals--and their growing acceptance by makers and users of asbestos products mav signal a change of emphasis in the U.S. cam paign to replace the material. L'mii recentiv. the thrust has been on substituting such materials as glass fibers and mineral wool in thermal ! insulation applications. But the new products aim at uses in which asbestos is employed as a composite--e.g.. in gaskets and seals, protective industrial i clothing, autom obile-brake pads, i clutch facings, and so on. Use of the new substitutes is slowiv gaining ground, propelled not so muciv by the threat of anv imminent new j rnE.\IK.M.CN<aXEERIM. i l'.U .AR1 "i curbs on asbestos <see box for an update on U.S. anti-asbestos moves), as by the growing popularity of civil suits started by workers who claim that exposure to the material has made th an ill. "W e're just fed up with dealing with these hassles,'' says a spokesman I Another company, Parker-Hannifin I (Lexington. Ky.), has recentiv an ! nounced several seal materials icarbon , fibers, tetrafluoroethylene) that it hopes will supplant asbestos gaskets. One is a double-jacketed, corrugated- *\n spprmuawe measure of rraJ surntth. jmvra it bv muiupivtnf (he pressure (in ptti and the temper* aiure t'F> at wtedt (tie material ftik for a sealing-material manufacturer. . metal gasket available in soft steel, who complains about pressure from copper. Monel or nicke'. unions, class-action suits, and difficul Also taking aim at asbestos is Du ties in gening dumping permits for Pont, which has fashioned its aromat asbestos wastes, "even though our j ic-polyamide fiber Kevlar into a new products contain the asbestos in encap- j ultrafine-pulp form said to be more sulated form, which we feel presents . compatible with existing asbestos-pro- no danger." !' cessing equipm ent. " W ith Kevlar (Outside the U.S., further curbs on j fiber, problems -an arise from its asbestos are expected to unfold slowly, | inherent toughness and because the too. Development of replacement ma- ! fiber does not break up during mixing. terials focuses mainly on use of syn It entangles, forming clumps in such thetic mineral fibers.) products as friction materials," savs / * VARIED RANGE-- Several gasketing David E. Hotness, a senior research manufacturers are pinning their hopes chemist at D u P ont on non-asbestos materials, and are T he firm could have improved dis claiming performance attributes com- persion sim ply by reducing fiber I parable with those of the real thing.* length, but this would have affected j Garlock Inc. (Palmyra. N.Y.) has the binding and reinforcing properties recently introduced its Blue-Gard gas of the end-product The fibers in the keting material. The company will not new p u lp a re sh o rter, but the reveal what the substitute fiber is. length/diam eter ratio is not changed bevond saying that it is an aervlic. because each fiber-stem has numerous \ The material is said to have a pres ultrafine fibers attached to it. sure-temperature ratine" of 700.000 i vs. 300.000 for compressed asbestos materials, and up to 200.000 tor other fiber-based gaskets. The upper tem perature limn is claimed to be 700'F. whereas compressed asoestos is rated to 750`F and other non-asbestos sun- stances to 50 0 F or less. ` W oven asbestos doth alone --without the o r aamc binder --is temperature-resistant to about 1,000'F According to company spokesmen, while the new material is at least seven times as expensive as asbestos fibers, it is cost-effective because 1 lb of it can replace as much as 20 lb of asbestos, with low-cost fillers making up the volume difference. True, brake linings cost 25% more than asbestos-based ones (although 50% less than the semimetallic brake linings also being tried as an asbestos alternative). But in accelerated brake-wear tests run by 3M Co. (St. Paul. Minn.). Kevlarcontaining brake linings have been found to have 50% less wear than asbestos linings. A variety of synthetic fibers -- including ceramics, acrylics--have been available for several years as replacements for asbestos in fire-pro tection clothing. The most recent addi tion is polvbenzimidole (PMI), for which Ceianese Corp. (New York City) announced plans for commercial production in September 1980. Fullscale output will begin in 1983. Although expensive (S30/lb), PM! is said to have excellent wear and shrink characteristics, and will also be tar geted for non-asbestos applications such as baehouse filters. Even Johns-Manville Co. (Denver. Colo.), perhaps the U.S. firm most closelv associated with asbestos, makes available packings and gaskets in about 10 alternative materials, includ ing graphite. Kevlar, carbon fibers and TFE. But a spokesman notes that these are more expensive and aim at appti- ( C o n tin u e d n c x -tp o ^ e ) rations involving enner 'vnineraiurcs m g n e r m a n '.n o se w ith s to o d o v .o ie s - ;os. or nianer aciditv. "We have noi replaced asbestos- based packing ana aasket products, and we are not going to discontinue anv." savs the spokesman. We sell much more asbestos-based materials than we ao all other materials com bined. Asbestos has such a broad range of applications." ALLAYING LEGAL ACTION --l.'mii rc-trictums .re apoiieu on oiiioomic 1 maieriais containing asbestos. :ne new products' iiest alls :s the growing fear of suits tiled bv workers who clatm that exposure to asbestos has caused i asbestosts or other diseases. According ; to one seal maker: "W e teei we can i prove that asbestos is not , harm ful. I especially when it is bound in a ; m atrix, as it is in sealing products, Pev_C However, -mo* w o r k e rs ami mean i-- untrr employees n in e -ucu. .Miming asoestos-rel.ucd imurv. Anti a is problem to invalidate 'hose Haims." For this reason, and because 01 se n timents such as "we teei urettv -tire that there will lie restrictions against : asbestos use within the next te n years." manufacturers believe it ts <>nh I prudent to Itxik into alternatives. : Nicholas Basta n i` m 1 -- Nonasbestos gasketing uses acrylic fibers Nonasbestos gasketing, which seais as effectively as asbestos in most applica tions. consists of acrylic fiber combined with a nitrile-rubber binder. Manufac tured by the traditional sheeter method. Blue-Gard compressed gasketing meets most ASTM F 104 specifications for compressed asbestos gasketing, accord ing to Gariock s Mechanical Packing Div. In laboratory tests, the material re sists chemicals, preventing loss of phys ical properties, and does not contami nate fluids. In addition, it does not pro mote corrosion of flanges and with stands bolt pressure without crushing or excessive plastic flow. The gasketing distributes pressure evenly over surfaces to compensate for normal irregularities, says Roy Whit taker. Director of Engineering. It is also elastic enough to maintain an adequate portion of the applied load when joint movements are not fully eliminated by joint design. Material thickness ranges from 1/32 to 1/8 in. (0.79 to 3.2 mmt: sheet size. 60 x 60 and 60 x 120 in. <1.5 x 1.5. 1.5 x 3.7 mi. Die-cut gaskets are also fabricated at the com pany's industrial-gasket shop. Circle 410 NON-ASBESTOS GASKETING rivals asbestos in performance Composed of acrylic fiber com bined with a nitrile ruober binder. Blue-Gard com pressed non - as- bestos gasketing . dem onstrates x performance that rivals that of white asbestos. In tests, it shows sufficient chemical resistance to prevent impairment of its physical properties, does not contaminate fluid han dled by system, does not promote corrosion of flanges, and withstands required bolt pressure with out crushing. Blue-Gard comes 1/32. 1/16. 3/32. and 'i in. thick in 60 x 60 and 60 x 120-in. sheet sizes. Gariock Inc.. Mechanical Packing Div.. lf>66 Divi sion St.. Palmyra. NY 14522 * m a r k n e d -<27 g t ^ i p m e r r f X> U rn ;r.u v j nu n S o n a s o e s to s itiSK etinv from G a riock :s :rxuail\ .m p e n -io u s o u cu l. -ly iJ ttJ L L A M ju y ? 3/% ] Gasketing Compressed non-asoestos gasketing is made of a c rv tic nbers heid in a nitrile rubber binder. It is destgnea to repiacc asbestos gasketing prod ucts m most applications. According to the maner :ne material has excellent chemical resistance, aces not promote corrosion 01 metai hanges. :s caoaoie 01 withstanding pressure wunout crusmne or undergoing oiastic defor mation ana s m iu b iv dctormnoic :o distribute oressure eventv on irregular surtaces. vet elas tic enouen r- resist extrusion ana excessive c r e e o -.OLT A D I 4TRILS IVC i . v R U X I ME. 'HA.MC.a ? \CKING DIVISION 4 JO P \ R k ME NEWV;RR N JJ . Mil *%m c-- 34117 : .0 0 C --H M C C ft 'T rtU M r * /rrri_y -v *UPTO38Y lACONS NO-ASBESTOS GASKET If asbestos is risky -- use something else. That's the philosophy of packaging ex perts Colt Industries Inc. which has developed a special compressed gasket made of acrylic fibers held in a nitrile rubber binder. It is designed to replace asbestos gasket products used around a piston or joint to control industrial container leakage. Certain characteristics of asbestos gaskets make them nearly irreplaceable. They do not bum. conduct electricity or corrode from chemicals. However, the Blue-Gard gas ket will do all that, plus withstand pressure without crushing. Colt industries Inc.'s GarIock Mechanical Packing Divfsioo makes the gasket, which meets most ASTM F104 speci fications for compressed as bestos gaskets. Contact: Colt Industries Inc.. 430 Park Ave.. New York. N'.Y. 10022. .Asbestos substitutes are aiming for use in products in which asbestos is used as a composite, including gasxets and seals, protective industrial clothing, auto brake pads, clutch facings, and others. Tne substitutes previously were used in^ffass fibers and mmerai wool m thermal insulation applications. Use of the new substitutes is propelled not so much by the threat of new curbs on asbestos as by the growing popularity of civil suits started by workers claiming that exposure to asbestos has affected their health. `G ^lp ck l j c j <Palmyra. NY) Blue-Gard gasketing material has a pressure rating of "00.000. vs 300.000 for compressed asbestos materials. The upper temperature limit is 700*F, vs 750*F for compressed asbestos and 500F for other nonasbestos substances. '^arker-Hannirin s new seal materials (carbon fibers, tetrafluoroethylene) shouid supplant asbestos gaskets/D uPonfs Keviar has been fashioned into a new ultrafine-puip form, more compatible with existing asbestos-processing equipment. The new material is 7X as expensive as asbestos fibers but is cost-effective because 1 lb of it can repiace 20 lbs of asbestos. Other products are discussed. Chem Ena 2/9/31 p47-51 March/April COMPRESSED NON-ASBESTOS GASKETING la Matured in a bulletin. The bulletin d e tails the s p e c i fications of this new gasketing material com posed of acrylic fiber com bined with a nitrile rubber binder. Manufactured by the traditional sheeter method, the material meets most of the A S T M F-104 standards for com pressed asPestos sheet. The gasKeting is service able through a pH range of 1 througn 11 and tem pera tures up to 700 deg. F.--G a rlo ck tnc.. M e ch a n ica l P acking Oiv. 267-14522GI k J& ftA ^ Wrt* in No. 1372 on card ^ C^L&t 41A-71 TECHNICALSUn/rr tu m .'i r e in 4 i98i 3 5 3 v STONE, GLASS & CLAY Acrylic fibers and a nitrile rubber binder combined as a nonasbestos gasketing meet most of the ASTM F-104 specifications for compressed asbestos gasketing, claims Coit Industries Inc s Gariock Mechanical Packing division fPalymyra. NY). Although the new material has a iower tensile streneth than compressed asbestos, its sealing ability matches asbestos. Gariock says. Other physical characteristics are identical to those of asbestos sheet: joint design remains about the same. Gariock predicts that smail businesses wiil still want asbestos but larger firms wiil want the substitute.O INDWeek 1/26/81 ?33 Non-asbestos gasketing Blue-Gard compressed, non-asbestos gasketing is manufactured from an acrylic fiber combined with a nitrile rubber hinder. Gasketing is available in sheets in thicknesses of 1/32. 1/16.3/ 32. t and 1.8 inches. Sheet sizes are 60 by 60 i inches and 60 by 120 inches. Additional i information from Gariock. Colt Indus tries. is available. Wnt No. 232,on reader sarvca card | O cc-upa+ D /vL l H a x c jd s Another Non-Asbestos Gasket Material Sets Sail With the recent flap over asbestos moving into a stage where it is an ac cepted parameter and companies are producing products to meet the guide lines, another manufacturer has joined the non-asoesios product roster. (Garlock's Mechanical Packing Di vision has taken the wraps off its BlueGaftT compressed non-asbestos gasket ing. The Garlock Blue-Gard is made of acrylic fiber, combined with a nitrile rubber binder. Manufactured by the tra ditional sheet method. Garlock claims its Blue-Gard meets most ASTM F 104 specs for compressed asbestos gasketing. In the laboratory testing, Garlock deter mined that Blue-Gard material has suffi cient chemical resistance to prevent im pairment of its physical properties, does not contaminate the fluid being handled by the system, does not promote corro sion of the flanges with which it comes in contact, and is capable of withstand ing required bolt pressure without crush ing or undergoing excessive plastic flow. In addition. Garlock Director of Engineering Roy Whittaker says BlueGard gasketing is sufficiently deforma ble, without resorting to excessive thick ness. to distribute the applied pressure evenly over surfaces to compensate for normal irregularities. Whittaker adds While the asbestos/non-asbestos story keeps rolling on, vehicle manufacturers are i%htm% a continuing battle with noise regulations leading to new materials developments. that the gasketing is elastic enough to maintain an adequate portion of the ap plied load when joint movements are not fully eliminated by the joint design, and resists excessive creep or extrusion. Garlock embarked on the research program to produce a compressed non asbestos gasketing material in response to requests of customers who were con cerned that a combination of circum stances was making the cost of asbestos gasketing prohibitive. Besides the in creasing cost of the material itself, asbes tos is the target of federal regulations, mandating air sampling, special disposal procedures and documentation. The gasketing is available in thick nesses of: 1/32" . 1/16" , 3/32" , 1/8" and sheet sizes of 60" x 60" and 60" x 120" (152cm x 152cm and 152cm x 305cm). * EN T ER 1418 O N R E A O E R S ER V IC E CARD 6 3 A -3? DIESEL PROGRESS NORTR AMERICAN 10 t i . v r . 25,000 FEB 198 1 ISacSs '* A -' MNAL - es*VO Non-asbestos gasketing Garlock > Mechanical Packing C v otters Blue-Gard. a compressed :ion-ashc,tos gasketing composed of acrylic tiber com bined with a nitrile rubber binder The com position has sufficient resistance to prevent impairment, it does not contaminate the fluid being processed, does not promote corrosion, and withstands bolt pressure without crushing, according to Garlock. Garlock. Mechanical Packing Div.. 1666 Division i t.. Palmyra. N.Y. 14522. Non-asbettoa gasketing with sealing features equal to asbestos. The acrylic fiber wuh nitrile rubber binder com pressed-gasket material has survived rig id field tests and complies with OSHA. EPA and ASTM specifications. BLUEGARD gasketing is available in standard off-the-shelf flange sizes and forms, also .UPPE'Ju: - \ccns Non-asbestos gasketing Garloctc Inc. s Blue-Gard compressed non-asbestos gasketine is described in a iwo-page bulletin iGSK-310). The bulletin gives specifications of the company s gas keting material, which is composed of ac rylic fiber comomed with a nitrile rubber binder, ana ae-.aiis chemical resistance, physical p ro D e n ie s . and typical te st data. Garlock Inc.. Mechanical Packing Div.. 1666 Division si.. Palmyra. ,VY. 14522. ;n sheets I 32. 1,16. 3 32 and i-m. hick. 5-ft square or 5 x 10 ft. Price is currently around 15L above premium grade asoestos sheet. Engineering sp& sheel `S available. Garlock. Mechanical Packing Div C irc le No. 317 . M i r d u s + n a i D k & t n t u f i c n .0* acing asbestos Meanwhile, in'the U.S. use of Substitutes the new substitutes is slowly gaining ground," propelled not so much by the threat of any im are eating minent new curbs on asbestos, as by the growing popularity of civil suits started by workers who into markets claim that exposure to the Kevlar. According to company spokesm en, w hile the new material is at least seven times as expensive as asbestos fibres, it is cost-effective because one pound of it can replace as much as 20 pounds of asbestos, with low-cost fillers making up the NEW YORK - The recent emergence of several new asbes tos su b stitu te s -- featuring synthetic fibres and metals -- and their growing acceptance by m akers and users of asbestos products.-may signal a change of em phasis in the United States cam paign to replace the material. material has made them ill. "W e're just Ted up with dealing with these h assles," says a spokesm an for a sealingm a te ria l m an u factu rer, who complains about pressure from unions, class-action suits, and difficulties .in getting dumping permits for asbestos wastes. Several gasketing manufac turers are pinning their hopes on volume difference. True, brake linings cost 25% more than asbestos-based ones (although 50% less th an the semi-metallic brake linings also being tried as an asbestos alter n ativ e) But in a c c e le ra te d brake-wear tests run by 3M Co. of St. P au l. M inn.. K evlarcnntaining brake linings have been found to have 50% less wear Glass fibres Until recently, the thrust has been .on substituting such non-asbestos m atenals. and are claiming performance attributes comparable with those of :he reai thing. Q a r jg jk lg ^ ^ f Palmyra. than asbestos linings. More expensive m aterials as glass -'hresju'd N Y. has recently introduced its Even Johns-M anviile Co. of ^ m in e ra l wool tu inennui insu Blue-Gard gasketing material. Denver, perhaps the U.S. firm lation aoplications. 3ut the new A nother com pany. P ark er- most closely asso c ia te d with products aim at uses in which ' Hannifin Corp. of Lexington. Ky.. asbestos, makes available pack asbestos is employed as a com has recently announced several ing. and g ask ets in about 10 posite -- things like gaskets and seal materials that it hopes will alternative m aterials, including se a ls, p ro te c tiv e in d u stria l supplant asbestos gaskets. One is graphite. Kevlar, carbon fibres clothing, automobile-brake pads, a dou le-jacketed. corrugated- and TFE. But a spokesman notes clutch facings, and so on. m etal gasket available in soft that these are more expensive F or Canadian asbestos pro steel copper. Monel or nickeL and aim at applications involving ducers it marks another bit of Also taking aim at asbestos is - either tem peratures higher than bad news in a long string that has E.I. du Pont de Nemours and Co.. those withstood by asbestos, or haunted the industry sioce the Wilmington, Del., with its fibre higher acidity. early 1970s. I All C anadian asbestos pro ducers are major exporters to the U.S.. including the larger com panies: Johns-Manville Canada Inc.: Flintkote Mines Ltd. (Gen- -2-2 FINANCIALTIMES .- CAL/.CA .7EEXLY 63.0001CAN) star Ltd. owns Flintkote's U.S. parent>; Societe Asbestos Ltee. (owned by the Quebec govern 1~CC;-S ment); Cassiar Resources Ltd. (wholly-owned by Bnnco Ltd.); 4 Asbestos Corp. (TSE i29); and United Asbestos Inc. (TSE S 7). H o n -A sb e e to a G a sk e tin g Blue-G ard com pressed non-asbestos gasket ing is com posed o f a crylic lib er corodw ed with More trouble a nitrile rubber binder. Product is sufficiently deform able to distribute the applied pressure \ The Canadian, industry's troubles were compounded last week by an Ontario Federation of Labor call for a total ban on the use of asbestos within four years. The OFL estimated that 200.000 evenly over su rfaces to com pens ate for nor m al irregularities. It is available in thicknesses of lb, fe. and S in. in sheet size s 60 X 60 and 6 ^ * J 2 0 in. G artock. C irc le 27 o)on R ea d e r S e rv ic e C a rd Ttecoer Engineering 4|ei w orkers a lre ad y exposed to asbestos in their ;oos will die over the next 20 years from 2 f A-6 F 0 0 3 E N G IN E E R !!! j MflNTW iv ** nnn cancer and other diseases. "There nas never been a sub stance used in society that has caused so m any needless deaths." the OFL said :n a brief Ore se n tv-i to the -nyul com - CUPWI6V 3ACONS \ Circle 4S2 N 0N -A S8EST0S GASKETING. Bulletin details ;he sp e cifica tions on tnis gasxetmg material com ooseo of acrylic fiber co m b in e d witn a nitrile r u o o e r o m a e r G a s n e t -s s e r v i c e a b l e t n r o u g n m ission 'n :n a pn 'a n g e of one tnrougn t ana :em oeratures uo :o 37: c T->r''nro 700 Ft .t .s available m sneets in ' m cxnesse s of . ' . ;-3* ana x nenes -- G arioc*. m e. M ecnan icai -'acKtng Otv.. Paim vra. NY Circle 471 Non-asbestos gasketing seals effectively From the time the government deter mined that asbestos is carcinogenic, and required that it be closeiy con trolled in the workplace, gasketing manufacturers have been searching for alternate materials which provide comparable tensile strength and resis tance to heat loss. In January, the Garlock Mechani cal Packing Div.. Colt Industries, be* came one of the early companies to introduce a non-asbestos gasketing, under the trade name "Blue-Gard." The Blue-Gard material is made of an acrylic fiber combined with a nitrile rubber binder, and closely resembles blue linoleum. It meets most of the ASTM F 104 specifications, which ASTM teat VMTthOd Physical prooerty Typical data F 37 F 36 F 36 F 146 Seal ability Maximum milliliter per hour leakage: Recovery Minimum otreent: Compressibility Percent range: Oil resistance after 5-hour immersions ASTM #3 o i l * +300" F: Thickntss increase range: Maximum tansiia loss: ASTM fuel 8 +70-8Si F: Thickness increase range: Maximum weight increase: Flexibility Bend 180* around rod with diameter 12x thicker than sheet: Density Grams/cm3: (pounds/ft3): . .8 40 7-17 0-13% 50% 0-15% 20% No cracking 1.60 (1001 Other test date High temoeratura limit: +371*C (+700*?) Maximum orasjure <ost> x temoarature tF): 700.000 Fluid resistance: eH of 1 through 11 Source: Gafoek Machante** Packing Oiv. freon, for examptei but a second gen eration is now under development for such applications. Blue-Gard gasketing sells for about 1c more than the company's premi um grade asbestos material. For more information, circle 1 on card. Non-asbestos gasketing is just as effective Non-asbestos gasketing is a tough sheet material formulated to seal as effectively as compressed asbestos in most applications, according to the manufacturer. Its fiber content is acrylic, bound by nitrile. The gasketing can reportedly be safely in stalled in most static sealing applications as a uni versal replacement gasket. It is said to meet a wide variety of service conditions in the hostile environ ments of power generation, metalworking, hydrocar bon processing, mining, and other industries where effective sealing is vital. The gasketing is formulated for severe service involving higher pressures and temperatures. It can be used for general service against mild acids, alkalies, gases, oils, solvents and refrigerants. The gasketing reportedly withstands pH range 1-11. and temperature resistance to J-T00F. Garlock, Mechanical Packing Division. 1666 Division St., Palmyra, NY 14522. . Write 4192 on reader service card establish procedures for testing a gas ket's compressibility, recovery, and scalability. The gasketing has been tested in the fiange to "00' F. and its tensile strength is rated to 2000 psi. The material has limited chemical resis tance i it is attacked by some types of 2 7 b r c h t f s i r C \ 3/2- " ic ; r 'c t n e r g u j M S n e m S "TtC hX ri OeuJ A - p r i l i `i g l Asbestos-free gasketing emerges from a maze of federal regulations Federal restrictions governing the production and use o l asbestos-containing materials have grown to the point that a federal register has been created to keep track of all the citations. These regulations, and the concerns to which they are directed, are causing industry to adjust its thinking regarding asbestos and its applications. As an alternative the Gartock company of Palmyra, NY 14S22, introduced a line of com pressed non-asbestos gasketing that eliminates the bureaucratic red tape and additional costs associated with using asbestos materials. AN APRIL 1979 REPORT by the Environmen tal Protection Agency reveals that six separate federal agencies are now involved in the enforce ment of the various regulations pertaining to pro duction and use of materials containing asbestos. The agencies involved in the regulations are: The Consumer Product Safety Commission, The Department of Transportation. The Environmen tal Protection Agency, The Federal Drug Admin istration, The Mining Enforcement and Safety Administration, and the Occupational Safety and Health Administration (OSHA). The forty-page government report does not contain the texts of the regulations, but is de signed to be '`a condensed source of information relating to the development of the various stan dards presently enforced by the agencies as well as proposals for new or modified regulations." According to the report, twenty separate cita tions have been issued under provisions of the EPA, including the Clean Air Act, the Federal Water Pollution Control Act, and the Toxic Sub stances Control Act. Industry burdened with restrictions Among the federal requirements imposed upon companies working with asbestos are mandatory employee medical examinations, and engineering controls such as isolation, enclosure, exhaust ventilation and dust collection. Workplaces where asbestos is manufactured, processed, packaged, stored, applied, used or handled must be moni tored to determine asbestos levels. The employer must also make protective clothing and respira tory devices available. The introduction of Garlock-BLUE-GARD compressed non-asbestos gasketing eliminates in dustry's need to meet expensive and rigid govern mental standards applied to the use of asbestos. The product is the culmination of a two-year re search program and is designed to seal as effectively as asbestos in most applications. Gariock embarked on the research program that produced the non-asbestos gasketing in re sponse to customer requests. Many were con cerned that a combination of circumstances was makins the use of asbestos gasketing prohibitive. Besides the increasing cost of the material itself. :hev cited the tangle of regulations mandating air samplina. special disposal procedures and docu mentation. Spokespersons in the industry were uiso voicing a concern that employee morale and rroductts ::v couid be jeopardized by the health concerns surrounding asbestos. Testing proves effectiveness Manufactured by the traditional sheeter meth od, the new gasketing is composed of acrylic fiber, combined with a nitrile rubber binder. It meets most of the ASTM-F-104 specifications for compressed asbestos gasketing, and has been tested satisfactorily in on-the-job applications by more than 50 of the company's customers. Earlier this year rigorous laboratory testing programs demonstrated that BLUE-GARD gas keting performs at a level rivaling white asbestos. During testing, it was determined that the nonasbesios material has sufficient chemical resis tance to prevent impairment of its physical prop erties. It was further proven that it does not con taminate the fluid being handled by the system: does not promote corrosion of the flanges with which it comes into contact: and is capable of withstanding required bolt pressure without un dergoing excessive plastic flow. Roy Whittaker, Garlock's Director of Engi neering, indicates that the new gasketing material is sufficiently deformable, without resorting to excessive thickness, to distribute the applied pres sure evenly over surfaces to compensate for nor mal irregularities. It also has enough elasticity to maintain an adequate portion of the applied load when joint movements are not fully eliminated' by the joint design. It resists excessive creep or extrusion and lends itself to easy installation and separation for ultimate removal. When the cost of compliance with regulations is figured into the current price of asbestos gas keting, BLUE-GARD is seen as an economical alternative. It is available in thicknesses of: K in., Vie in., %<> in., Vfe in., and sheet sizes of 60 in. by 60 in. or 60 in. by 120 in. Fabrication of precise die-cut gaskets are han dled at the company's Industrial Gasket shop in Palmyra. NY. A special research and engineering staff is available to handle the special require ments of product designers and component speci fiers adapting the gasketing to their own processes. (Continued next page) ENGINEER'S GIGEST/MAY 1981 jiittir tport In p ro d u ctio n a n d ro llin g off the T roester S h e e te r is a sheet of the com pressed non-asbestos gas keting, under the watchful eye of the operator. The sh e e te r m ethod has been in use s in c e 1896. ASTM T K S T Mu n i o n F 37 r 36 F 3 1 I 1 I 1 I I PHYMCAL PROPERTY Sealability Maximum Milliliter Hour Leakage TYPICAL PATA Recoven Minimum Percent Compressibility Percent Ranee O il R esistance tier 5 H our Imm ersions ASTM osi i v!irK Thickness Increase Ranee Maximum Tensile Lo>* ASTM Fuel B 4 -T" v, F ThiCKness Increase Ramre Maximum tVeurnt increase Flexibility 3end l?n ' arouna rnn * itn diam eter i>n tnicker '.nan -meet s,, 1 racKintf 1 DenMiv u ra m s t. m Pound* Ft 'in I { | OTHER DATA I I H:*n T em oerature Limit: - 7; <* Mu-*,*I Maximum P ressure >P S ! \ TVmoerature *" : ".1 fHUl** 1 1 r :,jia Resistance F-nm r*H ( .nroutft . ms *s a cenerai euiue aru *n>uni noi v -e n<e means i <eiectin* or re-evtmtf *.nis m alerta: ENGINEER'S DIGEST/MAY 1981 Ccn't