KHGWERO 10PCS EPDM O Ring ID 78.74/81.92/85.09/88.27*CS5.33mm O-Ring Gasket Seal Exhaust Mount Rubber Insulator Grommet ORING (Size : ID78.74x5.33mm): Amazon.com: Industrial & Scientific
P-22-0375 O-Ring 2-354 EPDM - SERFILCO
Hot Selling NBR EPDM Rubber Silicone O Ring Set for Gas Cylinder - China O Ring Silicon Set, O Ring for Gas Cylinder | Made-in-China.com