Manufactures sealants; manufactures gaskets, packing & sealing devices Diamonds, Manufacturing Components and Supplies, Dolomite, Magnesite, Asbestos, Calcium, Borate, Cryolite, Feldspar, Leucite, Nephelite, Steatite, Talc, Garnets, Silicon carbide, Activated carbon, Mulite, Fluorspar, Kieserite, Carnallite