Urethane o-rings for several PCPs

Forums PCP Airguns Urethane o-rings for several PCPs

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    fe7565
    Participant
    Member

    I want to order all the urethane o-rings at the same time and gathered this information so far.  What am I missing? 

     

    FX Impact and FX Crown:

    https://www.airgunnation.com/topic/impact-o-ring-list-corrected-with-links/

    C3 (also A31)       O-ring 2,9×1,78 PUR 90  

    B23                        O-ring 2,84×2,62 PUR 90  

    A31 (also C3)        O-ring 2,9×1,78 PUR 90   

     

    Taipan Mutant:

    6.07 x 1.78 -010 Piston reducer *Buno 70 polyurethane*
    2.9 x 1.78 -006 Piston reducer *Buno 70 polyurethane*

     

    Daystate Airwolf:

    Piston O-rings: (AR, AW, MK4, HM RGL)

    006 Urethane A90     or  BS-111 Urethane A90

     

    Airgun Technology Vulcan:

    Did not find any urethane o-ring parts

     

    Crosman 600 (not PCP):

    Valve body and piercing cap seal to inside of tube, both are 113 duro 90

    Hammer seal to valve is 014, duro 90

     breech gasket (square o-ring: size and material and duro rating?

     

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    nervoustrig
    Participant
    Member

    I can’t help with the sizes but wanted to comment on material selection.  Except for dynamic (sliding) O-rings, polyurethane has no benefit to justify the premium price. The only thing it does better than buna-N is resist abrasion.  Otherwise it has a shorter life and reduced high temperature resistance. 

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    mubhaur
    Participant
    Member

    Why are you interested only in Polyurethane O rings?

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    fe7565
    Participant
    Member

    I got all the other standard 70 and 90 o-rings already , these are the urethane ones as recommended by the manufacturer or by rebuilders. They go into high abrasion areas such as regulator, pellet probe, valve stem, etc. I wonder, if I missed any for each airgun.

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