Flat gasket Material:EPDM Owns the patent of rubber cap. can design the products for customers' specail need. Flat gasket1.Material :epdm2. ... Specifications of rubber cap,rubber gasket,O-ring,can desiged and ... special requirement.3. Optional colors of rubber cap,rubber gasket,O-ring,can make it on your order.4. ... 4*39*44.7*37.2*11.2 flat gasket