couplings Standard:EN14420-5, DIN28450 Material:brass,Stainless steel Gasket:NBR, ... ",4"Gasket>>NBR,PU,PTFE We mainly supply camlock couplings (cam & groove quick couplings), guillemin coupling, TW coupling, Bauer type coupling, chicago ... clamp, double bolt clamp, whipcheck safety cable, washdown gun, etc. couplings