washer, seals, cut and molding both, all kinds of rubber material material: EPDM,NBR,PVC,SBR,CR,Silicon,and FKM ... been ISO 9001:2000 aprroved . whos is factory - supperlier of rubber flat gasket for sanitary ware such as flexible metal hose , faucet ... system, we can provide the best service and quality products rubber gasket