RING ARAMID FLANGE GASKET FOR 5″ PIPE-1/16″ THICK – CLASS 150 RING GASKETS (RAISED GASKETS) ARE USED ON FLANGES WITH A RAISED SURFACE AND DO NOT REQUIRE MECHANICAL MOUNTING. ARAMID FIBERS BLENDED WITH BUNA-N GIVE THIS GASKET GOOD RESISTANCE TO OIL AND WATER AND MILD CHEMICALS.