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O-Rings

FSC 5331: O-Rings

Federal Supply Class (FSC) 5331 covers O-rings, the round-section elastomeric seals used to seal static and dynamic joints. The catalog includes O-rings built to AS568, MIL-SPEC, and industry standards.

O-rings seal connections in hydraulic, pneumatic, fuel, and fluid systems by compressing in a groove. They are among the most widely used sealing elements in machinery.

Common materials include nitrile (Buna-N), fluorocarbon (Viton), silicone, EPDM, and PTFE, selected for fluid compatibility and temperature range. Sizes follow standard dash-number series for repeatable replacement.

5331-01-572-9229 (R901004493)

NIIN: 01-572-9229
In stock
NSN: 5331-01-572-9229
FSC Code: 5331
MPN: R901004493

5331-01-559-3282 (R900004301)

NIIN: 01-559-3282
In stock
NSN: 5331-01-559-3282
FSC Code: 5331
MPN: R900004301

5331-01-572-5310 (R900005365)

NIIN: 01-572-5310
In stock
NSN: 5331-01-572-5310
FSC Code: 5331
MPN: R900005365

5331-01-559-3239 (R900007111)

NIIN: 01-559-3239
In stock
NSN: 5331-01-559-3239
FSC Code: 5331
MPN: R900007111

5331-99-474-6290 (R900008592)

NIIN: 99-474-6290
In stock
NSN: 5331-99-474-6290
FSC Code: 5331
MPN: R900008592

5331-01-572-9223 (R900023921)

NIIN: 01-572-9223
In stock
NSN: 5331-01-572-9223
FSC Code: 5331
MPN: R900023921

5331-01-409-1634 (R89944)

NIIN: 01-409-1634
In stock
NSN: 5331-01-409-1634
FSC Code: 5331
MPN: R89944

5331-01-559-5906 (R900008768)

NIIN: 01-559-5906
In stock
NSN: 5331-01-559-5906
FSC Code: 5331
MPN: R900008768

5331-01-572-9221 (R900633513)

NIIN: 01-572-9221
In stock
NSN: 5331-01-572-9221
FSC Code: 5331
MPN: R900633513

5331-01-559-3206 (R900908580)

NIIN: 01-559-3206
In stock
NSN: 5331-01-559-3206
FSC Code: 5331
MPN: R900908580

5331-01-572-5314 (R900008956)

NIIN: 01-572-5314
In stock
NSN: 5331-01-572-5314
FSC Code: 5331
MPN: R900008956

5331-01-559-3302 (R900009091)

NIIN: 01-559-3302
In stock
NSN: 5331-01-559-3302
FSC Code: 5331
MPN: R900009091

5331-01-572-5062 (R900009097)

NIIN: 01-572-5062
In stock
NSN: 5331-01-572-5062
FSC Code: 5331
MPN: R900009097

5331-01-559-3235 (R900004491)

NIIN: 01-559-3235
In stock
NSN: 5331-01-559-3235
FSC Code: 5331
MPN: R900004491

5331-01-572-5065 (R900001877)

NIIN: 01-572-5065
In stock
NSN: 5331-01-572-5065
FSC Code: 5331
MPN: R900001877

5331-01-559-3293 (R900001886)

NIIN: 01-559-3293
In stock
NSN: 5331-01-559-3293
FSC Code: 5331
MPN: R900001886

5331-01-571-8802 (R80632)

NIIN: 01-571-8802
In stock
NSN: 5331-01-571-8802
FSC Code: 5331
MPN: R80632

5331-01-567-9610 (R81195)

NIIN: 01-567-9610
In stock
NSN: 5331-01-567-9610
FSC Code: 5331
MPN: R81195

5331-01-474-3938 (R79060)

NIIN: 01-474-3938
In stock
NSN: 5331-01-474-3938
FSC Code: 5331
MPN: R79060

5331-01-546-1420 (R77673)

NIIN: 01-546-1420
In stock
NSN: 5331-01-546-1420
FSC Code: 5331
MPN: R77673

5331-01-474-4602 (R76358)

NIIN: 01-474-4602
In stock
NSN: 5331-01-474-4602
FSC Code: 5331
MPN: R76358

5331-01-567-7942 (R74657)

NIIN: 01-567-7942
In stock
NSN: 5331-01-567-7942
FSC Code: 5331
MPN: R74657

5331-01-474-7625 (R73864)

NIIN: 01-474-7625
In stock
NSN: 5331-01-474-7625
FSC Code: 5331
MPN: R73864

5331-01-567-7768 (R73599)

NIIN: 01-567-7768
In stock
NSN: 5331-01-567-7768
FSC Code: 5331
MPN: R73599

5331-01-568-0507 (R72032)

NIIN: 01-568-0507
In stock
NSN: 5331-01-568-0507
FSC Code: 5331
MPN: R72032

5331-01-474-4606 (R67886)

NIIN: 01-474-4606
In stock
NSN: 5331-01-474-4606
FSC Code: 5331
MPN: R67886

5331-01-567-6621 (R65397)

NIIN: 01-567-6621
In stock
NSN: 5331-01-567-6621
FSC Code: 5331
MPN: R65397

5331-01-571-6660 (R64075)

NIIN: 01-571-6660
In stock
NSN: 5331-01-571-6660
FSC Code: 5331
MPN: R64075

5331-01-550-6785 (R6375)

NIIN: 01-550-6785
In stock
NSN: 5331-01-550-6785
FSC Code: 5331
MPN: R6375

5331-01-550-7372 (R64997)

NIIN: 01-550-7372
In stock
NSN: 5331-01-550-7372
FSC Code: 5331
MPN: R64997

5331-01-470-5162 (R63548)

NIIN: 01-470-5162
In stock
NSN: 5331-01-470-5162
FSC Code: 5331
MPN: R63548

5331-01-540-6034 (R63185)

NIIN: 01-540-6034
In stock
NSN: 5331-01-540-6034
FSC Code: 5331
MPN: R63185

5331-01-476-3355 (R62673)

NIIN: 01-476-3355
In stock
NSN: 5331-01-476-3355
FSC Code: 5331
MPN: R62673

5331-01-511-6042 (R61467)

NIIN: 01-511-6042
In stock
NSN: 5331-01-511-6042
FSC Code: 5331
MPN: R61467

5331-01-371-3750 (R-600-002-26)

NIIN: 01-371-3750
In stock
NSN: 5331-01-371-3750
FSC Code: 5331
MPN: R60000226

5331-01-362-5962 (R-600-004-26)

NIIN: 01-362-5962
In stock
NSN: 5331-01-362-5962
FSC Code: 5331
MPN: R60000426

5331-01-362-5963 (R-600-021-26)

NIIN: 01-362-5963
In stock
NSN: 5331-01-362-5963
FSC Code: 5331
MPN: R60002126

5331-01-513-9894 (R56462)

NIIN: 01-513-9894
In stock
NSN: 5331-01-513-9894
FSC Code: 5331
MPN: R56462

5331-01-476-3354 (R54856)

NIIN: 01-476-3354
In stock
NSN: 5331-01-476-3354
FSC Code: 5331
MPN: R54856

5331-01-476-3328 (R53955)

NIIN: 01-476-3328
In stock
NSN: 5331-01-476-3328
FSC Code: 5331
MPN: R53955

5331-01-571-9644 (R53543)

NIIN: 01-571-9644
In stock
NSN: 5331-01-571-9644
FSC Code: 5331
MPN: R53543

5331-01-567-6112 (R524234)

NIIN: 01-567-6112
In stock
NSN: 5331-01-567-6112
FSC Code: 5331
MPN: R524234

5331-01-567-5226 (R520867)

NIIN: 01-567-5226
In stock
NSN: 5331-01-567-5226
FSC Code: 5331
MPN: R520867

5331-01-570-3373 (R522412)

NIIN: 01-570-3373
In stock
NSN: 5331-01-570-3373
FSC Code: 5331
MPN: R522412

5331-01-570-2994 (R522921)

NIIN: 01-570-2994
In stock
NSN: 5331-01-570-2994
FSC Code: 5331
MPN: R522921

5331-01-567-6651 (R519989)

NIIN: 01-567-6651
In stock
NSN: 5331-01-567-6651
FSC Code: 5331
MPN: R519989

5331-01-570-3276 (R521040)

NIIN: 01-570-3276
In stock
NSN: 5331-01-570-3276
FSC Code: 5331
MPN: R521040

5331-01-567-4846 (R518543)

NIIN: 01-567-4846
In stock
NSN: 5331-01-567-4846
FSC Code: 5331
MPN: R518543