Document kmMYrrpRwzQ5gMjD8yk0L7En

date: January 3, 1977 - #2 TO:All Domestic and International Distributors Specialists, and Salesmen A.W. Chesterton Co. from:Robert E. Rockwood Chesco, Inc. * SUBJECT: 241 Seal EXPORT SALES COHP. Many of you have already been informed about the 241 Seal. The 241 is a. technically advanced double seal concept which should allow us to make a significant impact in the double seal market. With this letter, I am including a copy of the 241 litera ture. We have tried to answer the major questions that you might have in the write-up. Please note the exclusive fea tures of the 241. We are going to initially manufacture eight shaft sizes. These are the eight most popular sizes. They are as follows:. Inch Metric 1 1/2" shaft size 1 3/4" " Tf 1 7/8" 1 2" " If 35 mm 45 Twn 55 ran 60 mm You can order any combination of size(s) you wish as long as it is a minimum of four units. When you order this by Jan uary 31, 1977, you qualify for the Chesterton "no-risk" pro gram and are guaranteed shipment by May 31, 1977. Seals ordered after January 31, 1977, will not be covered under the no risk (full credit for seals returned after being stock ed for six months) program. Also delivery may be delayed significantly when seals are ordered after January 31, 1977, because the manufacturing tooling, schedules, and raw materi als will have already been set for the initial run. Don * t miss out; let's make this the year of the DOUBLE SEAL and DOUBLE SALES. RER: jrv iKan f i MIDDLESEX INDUSTRIAL PARK - ROUTE 93, STONEHAM, MASS. 02180 USA. (Please confine each letter to one sub/ect) COLOR!TE 018325 LIST PRICE FOR CHESTERTON DISTRIBUTORS (less standard discount) Shalt Size 1 1/2 1 5/8 1 3/4 1 7/8 2 2 1/8 2 1/4 2 3/8 2 1/2 2 5/8 2 3/4 List Price $663.00 $688.00 $713.00 $741.75 $770.50 $801.15 $848.70 $877.45 $906.20 $93685 $967.55 Comments to be manufactured by 5/31/77 will be built when demand requir s to be manufactured by,5/31/77 y will be built when demand requires COLORITE 018326 LIST PRICE FOR CHESTERTON DISTRIBUTORS LESS STANDARD DISCOUNT Shaft Size 35mm 40mm 45mm 50mm 55mm 60mm 65mm List Price $643.00 $688.00 $713.00 $770.50 $801.15 $877.45 $936.85 Comments To be manufactured by 5/31/77 Will be built as demand requires To be manufactured by 5/31/77 Will be built as demand requires To be manufactured by 5/31/77 To be manufactured by 5/31/77 Will be built as demand requires COLORITE 018327 241 Seal 00 CM m oo H o W 8 4 O U 241*Seal COLOR!TG 018329 BARRIER FLUID PORTS t PORT) WITH l/*JNPT TAPPED HOLES AT ISO* APART ARE PROVIDED OH EVERY ALAND SET SCREW - TWO PROVIDED IN OPEN POSITION DURIHO RETAININO CL1PS-TWOPROVIDED TO HOLO OUTBOARD ROTARY IH OPEN POSITION OURIHO RUHR I HE COLOR!TE 018330 WPELLER ND 'SPRINGS-ALL FOUR SEAL FACES ARE SPRIHS LOADED TO PROVIDE SEAL SELF-ALISN1HS CAPABILITY 0-RINQ-IHSOARD ROTARY AND STATIONARY HYDRAULICALLY BALAMCED IH EITHER DIRECTION 241 DOUBLE BALANCED DOUBLE SEAL SET SCREWS - S PROVIDCO FOR POSITIVE DRIVE TO THE SHAFT \-- RETAININO RINQ SLEEVI-(sisss)seal is CARTRtDSE ASSEMBLED AMO PRESET AT THE FACTORY PUMP SHAFT R. E. Rockwood December 8, 1976 USES FOR THE 241 (TWO-FOR-ONE) SEAL 1. Batch Process (Installed Spare) 2. Fluids with a specific gravity <.6 3. Non-lubricating fluids such as light hydrocarbons and gases 4. Pieces of equipment that are hard to tear down (double ended pumps) 5. Dangerous or toxic fluids 6. Pumps that require cartridge mount for installation 7. Vacuum Applications 8. Compressors FEATURES AND BENEFITS 1. Fits AVS Pumps 2. Cartridge Mount 3. Centering Clips 4. Clips provided to hold outboard faces open during equipment running 5. Pumped fluid is on top of inboard seal 6. Double Balanced Inboard Seal No alteration of equipment. No installation dimensions or measure ments required. Centers off the shaft. Can be used as an installed spare. Cuts tear-down times in half. A. Centrifugal force throws particles away from faces. B. Pumped fluid can be hooked up to suction or discharge side of pump for constant circulation in seal area. A. Seal automatically adjusts and hydraulically balances itself whether barrier fluid is higher or lower pressure then pumped. B. Allows seal to be used for a tandem arrangement (breaking down pressures). COLORXTE 018331 - Page Two - 7. Self Aligning 8. Springs out of the fluid 9. Heat Reduction I 10. Non-Fretting C. Inboard stationary cannot blow forward and bottom out seal. D. High reverse pressure cannot cause faces to open. A. Can take 3 to 4 times the misalign ment of standard seals. B. Cuts the motion of each face in half, lowering heat buildup and wear. C. One face could completely freeze up and opposing face is still able to make necessary adjustments for effective sealing. D. All four faces are spring loaded which act as shock absorbers to minimize breakage in the case of short-span cavitation which causes excessive vibration. Minimizes clogging and hanging up of seal. Both inboard and outboard seals are balanced. The pumped fluid can be circulated in the stuffing box. The outboard seal is completely exposed to circulating ambient air. These three combined allow for a cool running double seal which allows the customer to set up the barrier fluid without the need of external circulation pumps. The 241 Seal will not damage any pump sleeves. COLOR!TE 018332 241 SEAL QUESTIONS YOU MIGHT ASK 1. When will the seal be ready for delivery? We will start manufacturing in late January and are scheduled for completion at the end of May. 2. What sizes will be available? Initially we will provide the four most popular sizes of seals. These are 1-1/2", 1-3/4", 1-7/8", and 2" shaft diameters. 3. What are the seal limits? Until further testing is completed we are putting the following limitations on the seal. Pressure Temperature Speed - 400 PSIG - Limit of the o'ring material - 4000 RPM 4. How much space is required to accommodate the seal? The 241 will fit into standard AVS (ANSI) pumps. It requires a 3/8" cross-section. Including the minimum clearance it needs a depth of stuffing box of 2-1/32 inches and a distance to first obstruction of 2-3/32 inches. 5. What materials will be supplied? Initially, in order to meet the widest range of field applica tions, the 241 Seal will be supplied in 316SS base metallurgy. The seal faces will be T.C. plating versus carbons. Installed o'rings of Viton rubber and Hastelloy "C" springs will also be supplied. V COLORXTE 018333 COLORITE 018334 In the early 1950's, Sealol/Chempro pio neered in the design and development of welded metal bellows seals. Those first bel lows seals were used to seal high temper ature oils (SOOT plus) in the newly emerg ing jet engines. Today, Sealol/Chempro bellows seals are in use throughout the world, not only in jet engines but in pumps, compressors, agitators, mixer* . . . wherever a rotating shaft must be sealed. And the new 676 is the newest addition to this line of time-tested bellows seals. Incorporating more than two decades of engineering refinements, the 676 offers you a number of important ad vantages. Lower Cost -- With new automated production techniques, Sealol- Chempro is now able to offer its field-tested 676 welded metal bellows seal at minimum cost. Better Performance -- with a data bank containing thousands of Sealol/Chempro bellows seal applications, our engineering staff has an invaluable resource. Their recommendations to you are based on field performance as well as design theory. Corrosion resistant -- all stainless Easy to install -- tighten three set steel construction screws and that's it ^ Simple design -- only one moving part No shaft fretting -- because there are No seal hang-up -- no loose parts, springs, etc., to clog and gum up no sliding wedges or o-rings Pressure balanced -- without steps in Self-cleaning -- because of open de the shaft or sleeve sign and centrifugal action COLORITE 018335 ril * '1 seal 'c: size: >1 ^mJX^Wr.' ' .030 , --12 i^^">'';'1.312'''^.:'.. ' .. 1.250 . 7 -14 'mm'MrjM .1.250 * -15 3fti$rj300m$. 1.250' -16 .> Msg >1.250 C - -18 : :>; 1.250 - minimum!":. $$, MAXIMUM*! .982 1.108 1.171 1.233 1.360 :i1-187ft*$d 7. ' ?,, 7H?t378*^ v: >-,1.439^1 i. '->.,t.586>:3! f - 20 t -22 i^pi^937im : f -24 '-26 "4- '.t-62^P M 2.06^|# 5EZt8732& !$i^T.4Sr$w ( -28 2.31Sj1#, --V -t.437 1.514 1.639 1.714 1.839 1.964 ! :>'2.099^ . .222X,V7Z -30 *" >32 -34 -36 -38 f -;it^1-.875':^; ^zooor^; Z437;%2.56Z>7 7 < >1.5007^ ' 'IWZ125!%. !$f$E2.68r^; ?: 1.500- a. . 00! 2J250rU&$i ^iZSIZ'W' ;>: >1.562. -'> ^%2937^: 1.562 : - . 7 2.088 2.214 2.338 2.464 2.588 - 2.346 7 : 2.472 :..; 2.597 ' i`i 2.728 7 ' 2.848 ''% -40 3.187'-SS'K. ; -42 /-- '^mz7sa^p: BOTKaata^. ,v'-> 2:788 ... ;>&09a-`-,> 'rj;v;z9is^|? W$22z&;>$ ; / -44. :' ' a-437?^'- ,.\7'3;0384?> ;cP@?a349.^ > -46 > ..... -48 ^1*^3:750$$^ ^>>1:687J&i. f^mt.ear+iwv ;>>33..3119a2>1*>>- '^13.629^ '<: - -50 ' ^3.87^ >i^7;750^^> pftft -52 iK3L250;i^ !' -54- <*., 750^111^ %^a683r:f5t.- :>ma899';'.> f> t~56.-.M8 -58 ^fa62&^P RaM #^3308>*g; --60 ^l.3-75(N^ mMl-soo^fc ; 7: v 1.875 > 4.058- . ' - > .7; 41399.. ; -62 >; ^^3.875^P S4-.625r^fe; ; i> '>1.875^%-;.'. ,/.>4.183..';.. ;>-'4^24'--" Materials of Construction bellows end fittings static packing rotary seal face mating ring AM 350 stainless steel 316 stainless steel Viton, EPR, buna or TFE jacketed "O" ring carbon, tungsten carbide Sealide, carbon, tungsten carbide, NiResist, alumina oxide, alumina oxide coating on a bas metal. COLORITE 018336 Gland Cavity "O" Ring Groove Mating Ring Clamped "T" Mating Ring Sea Size A j,b-t c `' iTW D . F' GL H .s-, - ' b-X ` *r|,rj,'V^|n,*|r Sea Size Dime- A siona J Code K 3L Mating Gland Gland Gind Gittd Matins ^ - i *>11411 lid Rhr Center- Center Center- Center- Grave AxiaT - bore- Inn bn ben^ , Dll; Length DM Depth Dnptk- -''i 4 - y1? "_. Ring JUnt Length 'IvVl'- , l > V** ,' dCUhaefllf nh Giant Cosntar- bon Oil. Mating Ring Ana Length Stnffiq Bnxi Bi^ DM -12 .7500 -14 .8750 -15 .9375 -16 1.000 -18 1.125 ; -20 ; -22 -24 -26 -28 * - -30 -3? ' -34 1 --3ff -38 , -40 -42 -44 -46 -48 t.250 1.375 1.500 1.625 1.750 1.875 2.000 2125 2.250 2.375 2.500 2625 2750 2.875 3.000 -50 3.125 -52 3.250 -54 3.375 -56* 3.500 -58* 3.625 ' -60 3.750 . -62 3.875 -64, i -1 4.000 .406 .406 .437 .437" .437 1.375 1.500 1.562 1.625 1.750 .344" .344 .375 .375 .375 .376 1-260 .375 1.385. .375 11.447 .437 1.510 .437 .1.635 1.484 1.609 1.671 1.734 1.859 .437 .437 .437 .500 .500 -12 .7500 -14 .8750 -15 .9375 -16 1.000 -16 C, c c C, C3 .437 .437 .437' .500 .500 1.875 2.000 2125 2375 2500 .rt ' -375 ".437 -1.885 2109 600 .375 .437 .2010 2234 .500 .375 -43T 2135- 2359 -.500 .437" -437 2266 2484 .500 .437. >>433Ei 2385 2609 .500- -18 1.125 -18 -18 -18 ' ,v? ^-20, ,1.250 C, C3 c4. c*`. c. .500 < 2.625 .437. V443T; *2510k 2:734 *500 .500- ~2750> .437: &4 ;2635 2.855 7600 .562 3.000 ,500'i 2500;: ,2760 2984: 7662 .562 : 2125 .500 *500 ,2685. 3.109 *662 `.562` 2250 -.500 v.506 2135 3.359 <662 iw/: .562 3375 .1500 .V>562- 2260 3.484 625 .625 2375. .562, ,"562 '3.385 3609 .625 , .625. 2500 .562' r662 ;3.S10 3.734 .625 .625 2750 .562 -.562- 3.635 3.859 .625 .625 2875 .562 '.562 3.760 3.984 .625 -'$&> ^--22" '1.375 ct r^24K= -1.500 Ci -28-': ;1.625 C, ."-20 r-V-, cT -28 1.750 Ct 1 * iV"J '5-28"-2S C, cy r30- 1675 -30 /,'r'; c* c, -32 2000 C, .781 4.000 .656 .781 4.125 .656 .781 4.250' .656 .781 4.375 .656 .781 4500 .656 77. '* : 662 3.885 4.109 .625 -34 2125 .562 4.010 4.234 .625 -38 2.250 .562 4.135 4.359 .625 -38 2375 .625 4.260 4484 .687 <*40.' . 2.500 .625 4260 4.484 .687 -42: 2.625 Cr c, c, c, c, Vv'". .781 4.625 .656 ".625 4.510 4.734 .687 .781 4750 .656 ,,625, 4.635 4659 .687 . .781: 4.875 ,.`.656 l1a^a8B2S5Sil 4760 4.984 .687 -44 2750 -46 2875 .-48 1 3000 C, CT C, 1.843 1.968 1.968 2.031 2093 2156 2281 2.000 2281 2406 2406 2781 2969 2031 2031 2906 3.031 3.156 2875 3.406 2406 3.781 2906 4.031 4.156 4.281 4.406 4.531 .437 .375 .437 .437 .437 ;.750 .687 .750 .750 .750 .437 :750 .437 .750 .592 .812 .562 .875 .437. . -.750 1.437 1.562 1.562 1.625 1.750 ` 1.750 1.876 1.750 1.750 2.00Q -:43r *.750 .437 .750 .437: ^rao* .437" .750 .437 .750 2*00CH 2250 2437 2500 2.500 .437 .562 .437 .562! .562 .562 .562 .562 .562 .562 .750 2.500; .875 2500: .750 2625 .937 2625 .875 2875 -kf'j.-r'*' -:& .875 2.875 .875 3.250.875 3.375 .875 3.500 .875 3.625; .562 875 3.750 .562- 1875 3.875c 562,.. ^875^ 4.000 * Block mating ring dimension* for --56 and ---58 are identical. COLORITE 018337 for longer sea! life... Specify Sealide Mating Rings--solid silicon carbide, the hardest known seal face material. Take full advantage of the capabilities of the 676 seal by specifying Sealide silicon carbide mating rings. They combine extreme hardness with an out standing resistance to strong corrosives and high temperatures. That's why the 676 seal and Sealide mating rings are a perfect combination. For Abrasives m Abrasive slurries are no problem when a self-cleaning, non-clog 676 is combined with a Sealide mating ring. The faces are so hard that abrasive particles are quickly pulverized. For Corrosives Because Sealide is virtually unaffected by strong chemical action, corrosive applications are limited only by the metal seal components. (Note: For the most difficult applications, consider Sealol/Chempro's all-Hastelloy Type 670 seal ) For High Temperatures Sealide maintains its high material strength up to 2550;F. Because this strength is com bined with high heat conductivity and low thermal expansion, Sealide easily withstands repeated thermal shocks. For High Pressures and High Speeds Extensive testing has proven Sealide's ability to perform at high PV values. Maximum Pressure x Velocity Values solid tungsten carbide vs. tungsten carbide Sealide vs. Sealide solid tungsten carbide vs. Sealide solid tungsten carbide vs. carbon 234 P.V. 1 x 10* lb/in1 x tt/min Sealide vs. carbon -is C Im .'ytfsa 'if Jiii'.-. ijWiiTi.y mresi gintemaTrnduhting tamatmountinc KQGOt COLORXTE 018338 Inside mounted 676 seal. This is the most common installation configuration, allowing use of any mating ring material and any flexible "o" ring compound. Outside mounted 676 seal. This configuration allows use of the 676 seal where there is insufficient room inside the stuffing box and a "hat" gland is not desirable. Recommended for clean fluids only. The protrusion of the gland beyond the seal facas is known as a "shroud", and pravents spray from the seal faces. Inside mounted 676 seal with quench gland and lip seal. This gland allows introduction of a quench fluid to prevent crystalliza tion of process fluids at the face. Inside-outside mounted 676 seals. This arrangement is useful for sealing process fluids which have absolutely no lubricating qual ities. A barrier fluid is introduced through the gland between the two seals. 676 seal with "hat" gland. This gland permits seal installation where there is no stuffing box, where the stuffing box is too small to accommodate the seal or where the stuffing box is inaccessible to tools. Tandem 676 seals. This double seal arrangement is useful for non-lubricating fluids or where redundancy is required for safety reasons. Inside mounted 676 seal with flush, vent & drain t throttle bushing gland, and throttle bushing in the stuffing box throat. This arrangement allows restriction of flush fluid flow, to control the environment in the seal cavity. A steam quench can be added through the gland vent & drain connections. rm ggAim AN COMPANV SEAIOL, INC CHEMPRQ, INC- * ROTARY SEAL CORPORATION* CHEMPRO, ,MC. 100 Pioneer Ave., Warwick, R. 1.02888 RA#5245 750750 Printed In U.S.A. Distributed by: 676 cartridge seal. Used for double bearing split case horizontal pumps or other applications where the seal cannot be tightened onto the shaft with the set screws once it is in place. Your Authorized Distributor displays this sign 1 AUT**om*0 COLORITE 018339 Inside mounted 676 seel. This is the most common installation configuration, allowing use of any mating ring material and any flejtibte "o" ring compound. Outside mounted 76 seal. This configuration allows use of the 676 seal where there b Insufficient room inside the stuffing box and a 'hat" gland is not desirable. Recommended for clean fluids only. The protrusion of the gland beyond the seal faces b known as a "shroud", and prevents Spray from the Seal laces. Inside mounted 676 seal with quench gland and lip seal. This gland allows introduction of a quench fluid to prevent crystalliza tion of process fluids at the face. Inside-outside mounted 676 seals. Thu arrangement Is useful for sealing process fluids which have absolutely no lubricating qual ities. A harrier fluid is introduced through the gland between the two seals. 676 seal with "hat" gland. This gland permits seal installation where there is no stuffing box. where the stuffing box is too smalt to accommodate the seal or where the stuffing box Is inaccessible to tools. Tandem 676 seals. This double seal arrangement is useful for non-lubricating fluids or where redundancy is required for safety reasons. i K-_ Inside mounted 676 seal with flush, vent 6 drain 6 throttle bushing gland, and throttle bushing In the stuffing box throat Thb arrangement allows restriction of flush fluid flow, to control the environment in the seal cavity. A steam quench can be added through the gland vent A drain connections. TO3 IsNsHUP AN COMPANY SEALOL MC. CHEMPftO, INC. ROTARY SEAL CORPORATION* CHEMPRO, inc. 100 Pioneer Ave,, Warwick, R. 1.02888 RA#5245 750750 Printed In U.S>. Distributed by: 676 cartridge seat Used for double bearing split case horizontal pumps or other applications where the seal cannot be tightened onto the shaft with the set screws once it is in place. Your Authorized Distributor display this sign 0,-T"-*UTe>,, COLORITE 018340