Material: UL Nylon 6/6; neoprene for seal insert, with nut Color: Black, gray, light ... .Material: parts A,C,E are made of UL approved nylon PA66,parts B and D are made of nitrile butadiene ... to resist salt,acid,alkali, alcohol,grease and general solvent. 6.Color: black,white,grey as well as special colors that ...