Jason Industrial offers a comprehensive portfolio of industrial hose, couplings and accessories along with hydraulic hose, fittings and crimping equipment. Replacement gaskets made from black NBR for cam & groove couplings. Gaskets are available in 1/2 in. to 8 in. sizes with 0.156 in. to 0.343 in. thickness, 11/16 in. to 8 1/8 in. ID & 1 1/32 in. to 9 5/16 in. OD.