H. W. Johns Manufacturing Co. · H. W. Johns Mfg Co. · leaf 13
12 H. W. JOHNS MANUFACTURING CO. ASBESTO=SPONGE FELTED COVERING. (patented.) … For Steam Pipes. This Covering is composed of Asbestos and Sponge felted and formed into cylinders, which arc cut longitudinally, and can be readily '* sprung M over the pipe. It is a better non-conductor than any other, and is adapted for both high and low steam pressure ; as it is very elastic,…
Asbestos · Insulation · Paint · Roofing
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