... and unstandard as customer's requiredSizeWe can provide you with many different sizes of rubber parts according to your ... for gas meter Seal rubber diaphragm for gas meter1) Available material : material for NBR,FKM,FPM,VITON(FKM)&Dow elastomers,Neoprene,HNBR,Natural ... cut bonding washer molds by ourself. 7)Responds very well with resistance to ozone, high temperatures, oxygen, mineral oil, synthetic ...