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    33 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
    0.183" Wide
    320
    		0.076"1.138"1.504"Durometer 90A (Hard)-30 to 250Black505288T5120000000000
    321
    		0.076"1.2"1.566"Durometer 90A (Hard)-30 to 250Black505288T3500000000
    322
    		0.076"1.263"1.629"Durometer 90A (Hard)-30 to 250Black505288T35100000000
    323
    		0.076"1.316"1.682"Durometer 90A (Hard)-30 to 250Black505288T35200000000
    324
    		0.076"1.388"1.754"Durometer 90A (Hard)-30 to 250Black505288T353000000000
    325
    		0.076"1.513"1.879"Durometer 90A (Hard)-30 to 250Black505288T354000000000
    326
    		0.076"1.638"2.004"Durometer 90A (Hard)-30 to 250Black505288T3550000000000
    327
    		0.076"1.763"2.129"Durometer 90A (Hard)-30 to 250Black505288T3560000000000
    328
    		0.076"1.888"2.254"Durometer 90A (Hard)-30 to 250Black505288T3570000000000
    329
    		0.076"2.013"2.379"Durometer 90A (Hard)-30 to 250Black505288T3580000000000
    330
    		0.076"2.138"2.504"Durometer 90A (Hard)-30 to 250Black505288T3590000000000
    331
    		0.076"2.268"2.634"Durometer 90A (Hard)-30 to 250Black505288T360000000000
    332
    		0.076"2.393"2.759"Durometer 90A (Hard)-30 to 250Black505288T3610000000000
    333
    		0.076"2.518"2.884"Durometer 90A (Hard)-30 to 250Black505288T3620000000000
    334
    		0.076"2.643"3.009"Durometer 90A (Hard)-30 to 250Black505288T3630000000000
    335
    		0.076"2.768"3.134"Durometer 90A (Hard)-30 to 250Black255288T5130000000000
    336
    		0.076"2.893"3.259"Durometer 90A (Hard)-30 to 250Black255288T3650000000000
    337
    		0.076"3.018"3.384"Durometer 90A (Hard)-30 to 250Black255288T3660000000000
    338
    		0.076"3.143"3.509"Durometer 90A (Hard)-30 to 250Black255288T3670000000000
    339
    		0.076"3.273"3.639"Durometer 90A (Hard)-30 to 250Black255288T3680000000000
    340
    		0.076"3.398"3.764"Durometer 90A (Hard)-30 to 250Black255288T3690000000000
    341
    		0.076"3.523"3.889"Durometer 90A (Hard)-30 to 250Black255288T370000000000
    342
    		0.076"3.648"4.014"Durometer 90A (Hard)-30 to 250Black255288T3710000000000
    343
    		0.076"3.773"4.139"Durometer 90A (Hard)-30 to 250Black255288T3720000000000
    344
    		0.076"3.898"4.264"Durometer 90A (Hard)-30 to 250Black255288T3730000000000
    345
    		0.076"4.028"4.394"Durometer 90A (Hard)-30 to 250Black255288T3740000000000
    346
    		0.076"4.153"4.519"Durometer 90A (Hard)-30 to 250Black255288T3750000000000
    347
    		0.076"4.278"4.644"Durometer 90A (Hard)-30 to 250Black105288T51400000000
    348
    		0.076"4.403"4.769"Durometer 90A (Hard)-30 to 250Black105288T37700000000
    349
    		0.076"4.528"4.894"Durometer 90A (Hard)-30 to 250Black105288T378000000000
    350
    		0.076"4.653"5.019"Durometer 90A (Hard)-30 to 250Black105288T379000000000
    351
    		0.076"4.778"5.144"Durometer 90A (Hard)-30 to 250Black105288T380000000000
    358
    		0.076"5.653"6.019"Durometer 90A (Hard)-30 to 250Black105288T3870000000000
     
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