Vent seal Rubber cap Material:EPDM Owns the patent of rubber cap. can design the products for customers' specail need. Vent seal Rubber cap1.Material :epdm2. Specifications of rubber cap,rubber gasket,O-ring,can desiged and satified for customerss special requirement.3. Optional colors of rubber cap,rubber gasket,O-ring,can make it on your order.4. Your OEM orders for the products are welcome.5. ...