... service Industrial Rubber Bellows features,1) Available material : material for Silicone NBR,Fsil,VITON(FKM)&Dow elastomers,Neoprene,HNBR,Natural ... all documents such as PPAP, CONTROL PLAN, PFMEA etc.6)Have advanced CNC machine and technique to cut bonding washer molds ... E7001Z59) can meet NSF KTW WRAS DVGW(W270) and we have certification for all of them9)Widely applied in faucet,toilets,fittings,pipes ...