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Insulating Materials Robert A. Keasbey Company ASBESTOS Bank and West Streets NEW YORK CITY .100 Catherine St,, Syracuse, N. Y. Branches; 54 Church St., Hartford, Conn. Pipe and Boiler Coverings, Heat and Cold Insulation Contracts Executed Argentum Insulation For Underground Piping ^WATER-PROOF STAPLES ASBESTOS ROLLER, WATER-PROOF CEMENT w LOWER HALF OF ASBESTOS ROLLER SUPPORT SHOWING ROLLER PLATE AND BALLS This System provides a simple and logical method of insulating underground steam or hot water pipes in connection with Central Heating Plants, large Institutions, Schools, UniveTrhsiistietys,peHoosfpinitaslusl,aGtioanraginesa, emtco.dified form is excellent for piping running in unex cavated portions or buried in ground subject to dampness under buildings. Specifications, data and prices furnished upon request. EARTH FBLc , . MAGNESIA SECTIONAL COVEftING - , BROKEN STONE FILL Insulating Materials Keasbey & Mattison Company Ambler, Penna. K & M FEATHERWEIGHT 85% MAGNESIA PIPE AND BOILER COVERING AND AMBLER ASBESTOS PRODUCTS "If it's made of Asbestos, we've got it" Boston, Mass. Baltimore, Md. Buffalo, N. Y. Chicago, III. Cincinnati, Ohio BRANCH OFFICES: Cleveland, Ohio Detroit, Mich. Minneapolis, Minn. Milwaukee, Wis. New York, N. Y. Norfolk, Va. Philadelphia, Penna. Pittsburgh, Penna. . Pacific Coast Offices Sharon Bldg., San Francisco 201 Douglas Bldg.. Los Angeles Syracuse, N. Y. Washington, D. C. Wilkes-Barre, Penna. Toronto. Canada Alaska Bldg.. Seattle Southwestern Distributor: R*. V. Aycock Company, Kansas City, St. Louis. Tulsa, Houston Asbestos Fiber, Crude and Carded Ambler Asbestos Thread and Yarn Ambler Asbestos Cloth, Metallic and Plain Ambler Asbestos Selvedge Edge Tape PRODUCTS Ambler Asbestos Wick and Rope Packing Ambler Asbestos Braided Tubing Ambler Asbestos Gaskets, Woven and Compressed Ambler Asbestos Sheet Packing, Plain and Metallic Ambler Asbestos Compressed Packing t Ambler Asbestos Felt Ambler Asbestos Papier Ambler Asbestos Millboard K. & M. Featherweight 85% Magnesia Pipe .and Boiler Coverings ; Ambler Asbestos Products --This trade name covers an extensive list of as bestos manufactures, both textile and felt ed, meeting every im aginable need of the heating engineer. These products are made of asbestos from the famous Bell Asbestos Mines, Thetford, Canada, owned and operated by us, and represent a manu facturing experience of more than 40 years. This experience and the service of a corps of chemical and engineering experts are at your disposal. K&M 85% Magnesia Coverings in standard thickness can be de pended on to save from 75 to 97 per cent of the total heat wasted by bare v pipes. TABLE SHOWING THE WEIGHTS ESTAB LISHED BY K & M MANUFACTURING METHODS FOR 85 PER CENT MAG NESIA SECTIONAL AND BLOCK COVERINGS 85% Magnesia Sectional Covering 3 feet long 85% Magnesia Sec tional Blocks. I Square Foot K&M Featherweight 85% Magnesia Coverings--The efficiency of an insulating covering depends primarily on the number of dead-aircells. Through the use of carded asbestos fiber of selected grade, we are * enabled to get the necessary structural strength in our Magnesia Coverings with a minimum amount of asbestos fiber and a maximum amount of carbonate of mag nesia. Chemical tests show the magnesia content of K & M Featherweight Mag nesia Coverings to be always well in excess of 85 per cent and running as high as 90 to 91 per cent. Some magnesia coverings offered run as low as 70 to 75 per cent in carbonate of magnesia. Tests show that the purchaser is warranted in paying ten per cent more for the .lighter and more efficient covering. Don't pay for inert weight in your coverings. "The lighter they weigh, the better they pay." Size K. & M. warranted weight for Sec. Size K. &M. warranted weight for Sec. Thick ness K. & M. warranted weight perSq. Ft. Vt' v<r \* iy,' i1/?' 2' I'll y 1.41 1.5 1.8 2.125 2.25 3 3.5 4 5 4* 4>/z* 5' 6" V 8" V 10' 5.5 6 7 8 10 12 13 14 Vl* VS \" w i >/" i`/i" 2' 2'/,' 4' .763 none nulled 1921 1.256 1.59 1.59 1.938 2.596 3.25 6.11 K&M Featherweight85% Magnesia covering is available in half sections for standard size? of pipe to 10 in. in diameter; in segments for larger pipe and for other curved surfaces; in blocks for flat surfaces and flat boilers; and in the form of plastic or fibrous powder for application to joints and other irregular surfaces. Requests for descriptive literature and advice on specific needs cordially invited. 275