Insist on ROW, Inc. TFE-O-SIL® vulcanized encapsulated O-Rings!
50pc/lot O Type Sealing Ring Waterproof Nipple Joint Sealing Rubber Ring Diameter 1.6cm O Ring Seal Nitrile Gasket Oil Rings Was - Garden Water Connectors - AliExpress
Spears - 1-1/2" Big O-Ring for Swing Joint | Reinders
Rotary Joint Axle O-Ring for Willmes TP Press | Scott Laboratories
Joints with O-Ring Seal, Ace Glass Incorporated | VWR
After the Space Shuttle Challenger disaster and the O-Ring failure in the rocket booster, is there now better material used rather than rubber for such O-Rings? - Quora