... ,DIN6916; 2,From 10-30MM 3,Material,carbon steel,EPDM,SS304 Epdm steel bonded washer,rubber steel bonded washer1,Standard:DIN125, DIN9021 ... , DIN433, DIN6916;2,From 10MM-30MM3,Material:carbon steel,EPDM,stainless steel,brass,rubber.4,Surface finish: a) White,yellow ... or black zinc, b)Black or gray phosphor, c)Dakromet, d)Ruspert, e)Geomet, f)Magni,g) Black Oxide,h) Nickel ...