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Thread: Do PTFE O-rings still need to be lubed ?

  1. #1
    bossmugler is offline More breaking even than breaking bad
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    Do PTFE O-rings still need to be lubed ?

    Hi all, probably a numpty question, but do PTFE O-rings still need to be lubed to preserve their durability and longevity ?

    Regards

    Ian

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    tinbum's Avatar
    tinbum is offline Killer Vampire Lesbians on scooters
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    Yes, but what application are they being used for?
    God rest ye jelly mental men

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    Quote Originally Posted by bossmugler View Post
    Hi all, probably a numpty question, but do PTFE O-rings still need to be lubed to preserve their durability and longevity ?

    Regards

    Ian
    Do you mean polyurethane O rings which are the most commonly used, in place of black rubber Nitrile or Viton. They can be lubed with silicon grease when installing but not really necessary. PTFE is not usually used for O rings in air guns as it has no memory and distorts under pressure. You occasionally see small round white CO2 capsule seals in the magazines of CO2 pistols which is a cheap PTFE alternative used by manufacturers. They soon squash and mishape.

    Baz
    Last edited by Benelli B76; 18-03-2018 at 08:30 PM.
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    bossmugler is offline More breaking even than breaking bad
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    I bought a seal kit for my HW100 and there is a PTFE -O-ring for the inlet valve that that cylinder screws onto. I was just confirming if it needs a touch of lube on it

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    tinbum's Avatar
    tinbum is offline Killer Vampire Lesbians on scooters
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    Quote Originally Posted by bossmugler View Post
    I bought a seal kit for my HW100 and there is a PTFE -O-ring for the inlet valve that that cylinder screws onto. I was just confirming if it needs a touch of lube on it
    Yes, a dab of silicon grease will be perfect. If it had been an o ring piston head then moly would be better
    God rest ye jelly mental men

  6. #6
    bossmugler is offline More breaking even than breaking bad
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    Thanks for your help. Its very much appreciated

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