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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.

5331-01-572-5059 (R978800493)

NIIN: 01-572-5059
In stock
NSN: 5331-01-572-5059
FSC Code: 5331
MPN: R978800493

5331-01-567-6135 (R99038)

NIIN: 01-567-6135
In stock
NSN: 5331-01-567-6135
FSC Code: 5331
MPN: R99038

5331-01-572-9226 (R978884545)

NIIN: 01-572-9226
In stock
NSN: 5331-01-572-9226
FSC Code: 5331
MPN: R978884545

5331-01-474-7824 (R99702)

NIIN: 01-474-7824
In stock
NSN: 5331-01-474-7824
FSC Code: 5331
MPN: R99702

5331-01-516-9380 (R978713149)

NIIN: 01-516-9380
In stock
NSN: 5331-01-516-9380
FSC Code: 5331
MPN: R978713149

5331-01-343-1052 (R94418)

NIIN: 01-343-1052
In stock
NSN: 5331-01-343-1052
FSC Code: 5331
MPN: R94418

5331-01-524-0136 (R910904274)

NIIN: 01-524-0136
In stock
NSN: 5331-01-524-0136
FSC Code: 5331
MPN: R910904274

5331-01-524-0134 (R910904264)

NIIN: 01-524-0134
In stock
NSN: 5331-01-524-0134
FSC Code: 5331
MPN: R910904264

5331-01-563-7775 (R910922449-22)

NIIN: 01-563-7775
In stock
NSN: 5331-01-563-7775
FSC Code: 5331
MPN: R91092244922

5331-01-524-0140 (R910904936)

NIIN: 01-524-0140
In stock
NSN: 5331-01-524-0140
FSC Code: 5331
MPN: R910904936

5331-01-524-0141 (R910919314)

NIIN: 01-524-0141
In stock
NSN: 5331-01-524-0141
FSC Code: 5331
MPN: R910919314

5331-01-563-8118 (R910907013-23)

NIIN: 01-563-8118
In stock
NSN: 5331-01-563-8118
FSC Code: 5331
MPN: R91090701323

5331-01-563-8130 (R910922449-23)

NIIN: 01-563-8130
In stock
NSN: 5331-01-563-8130
FSC Code: 5331
MPN: R91092244923

5331-01-563-7200 (R910907010-22)

NIIN: 01-563-7200
In stock
NSN: 5331-01-563-7200
FSC Code: 5331
MPN: R91090701022

5331-01-524-0133 (R910186961)

NIIN: 01-524-0133
In stock
NSN: 5331-01-524-0133
FSC Code: 5331
MPN: R910186961

5331-01-563-7776 (R910922449-24)

NIIN: 01-563-7776
In stock
NSN: 5331-01-563-7776
FSC Code: 5331
MPN: R91092244924

5331-01-572-2508 (R910515078)

NIIN: 01-572-2508
In stock
NSN: 5331-01-572-2508
FSC Code: 5331
MPN: R910515078

5331-01-563-8123 (R910920179-2)

NIIN: 01-563-8123
In stock
NSN: 5331-01-563-8123
FSC Code: 5331
MPN: R9109201792

5331-99-741-0807 (R909086333)

NIIN: 99-741-0807
In stock
NSN: 5331-99-741-0807
FSC Code: 5331
MPN: R909086333

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