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ISO O-rings that aren't garbage

Discussion in 'Tanks, Valves & Bands' started by DevilEyeDog, May 4, 2021 at 6:26 AM.

  1. wnissen

    wnissen ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 50 - 99
    Location: Livermore, Calif.
    Respectfully, o-rings are inexpensive, easily counterfeited life-support equipment. If it is off-spec (too thin, too small, too soft) and extrudes at the wrong moment, your tank could be empty in about a minute. I would not try to save a few bucks by buying them from Amazon. They commingle all their stock, so you are almost certainly not getting product from the company (or individual) on the listing.

    I have an engineer and a technician I am close to, and this is where they get almost all their industrial supply. If it's good enough to go to space in a satellite, I would trust it on my tank.
    The Chairman likes this.
  2. DevilEyeDog

    DevilEyeDog REEF Volunteer

    # of Dives: 200 - 499
    Location: USA
    THANK YOU EVERYONE! Honestly I've been diving for 3 years and my knowledge of o-rings is limited to replace when you hear a hiss. I had no idea there were different qualities or materials until today. I appreciate the picks too!
    The Chairman likes this.
  3. Akimbo

    Akimbo Just a diver Staff Member ScubaBoard Supporter

    At least in North America, any authorized Parker dealer is a safe place to purchase quality O-rings.

    You might find these links useful for general information on O-rings:
    O-rings for Divers

    Scuba Cylinder Valve Installation
    Bob DBF, The Chairman and wnissen like this.
  4. deeper thoughts

    deeper thoughts Solo Diver

    # of Dives: 500 - 999
    The Chairman likes this.

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