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    10 Products

    Oil-Resistant Buna-N Backup Rings

    Image of ProductInUse. O-Ring Sealing Properly with Backup Ring. Front orientation. CrossSection view. Contains Annotated. Backup Rings. Oil-Resistant Buna-N Backup Rings.
    Image of ProductInUse. O-Ring Deforms Without a Backup Ring. Front orientation. CrossSection view. Contains Annotated. Backup Rings. Oil-Resistant Buna-N Backup Rings.

    O-Ring Sealing Properly with

    Backup Ring

    O-Ring Deforms Without a Backup Ring

    Image of Product. Bottom orientation. Backup Rings. Oil-Resistant Buna-N Backup Rings.
    Image of Attribute. Front orientation. CrossSection view. Contains Annotated. Oil-Resistant Buna-N Backup Rings.
    Extend the life of O-rings in oily, high-pressure systems that operate at up to 2,500 psi. These backup rings support O-rings and prevent them from deforming under pressure and causing pressure loss. Made of Buna-N, these rings won’t swell when exposed to grease, petroleum fluids, and motor oil. However, they will degrade when exposed to mild or harsh chemicals. They’re often used in hydraulic, automotive, and industrial systems. All have a shelf life, cure date, and a traceable lot number printed on the bag.
    Pkg.
    For Dash
    No.
    Thk.
    ID
    OD
    Hardness
    Temp. Range,
    ° F
    Color
    Pkg.
    Qty.
    1-9
    10-Up
    0.236" Wide
    426
    0.117"4.676"5.148"Durometer 90A (Hard)-30 to 250Black105288T436000000000000
    427
    0.117"4.801"5.273"Durometer 90A (Hard)-30 to 250Black105288T4370000000000
    429
    0.117"5.051"5.523"Durometer 90A (Hard)-30 to 250Black105288T4390000000000
    433
    0.117"5.551"6.023"Durometer 90A (Hard)-30 to 250Black105288T4430000000000
    437
    0.117"6.051"6.523"Durometer 90A (Hard)-30 to 250Black105288T4470000000000
    439
    0.117"6.524"6.996"Durometer 90A (Hard)-30 to 250Black105288T4490000000000
    443
    0.117"7.524"7.996"Durometer 90A (Hard)-30 to 250Black105288T4530000000000
    446
    0.117"8.524"8.996"Durometer 90A (Hard)-30 to 250Black55288T4560000000000
    451
    0.117"11.024"11.496"Durometer 90A (Hard)-30 to 250Black55288T4610000000000
    452
    0.117"11.524"11.996"Durometer 90A (Hard)-30 to 250Black55288T4620000000000
     
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