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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.

5331-01-322-2429 (515124)

NIIN: 01-322-2429
In stock
NSN: 5331-01-322-2429
FSC Code: 5331
MPN: 515124

5331-01-286-5456 (516040)

NIIN: 01-286-5456
In stock
NSN: 5331-01-286-5456
FSC Code: 5331
MPN: 516040

5331-01-286-6092 (516555)

NIIN: 01-286-6092
In stock
NSN: 5331-01-286-6092
FSC Code: 5331
MPN: 516555

5331-00-514-4922 (516625)

NIIN: 00-514-4922
In stock
NSN: 5331-00-514-4922
FSC Code: 5331
MPN: 516625

5331-00-090-0636 (517034)

NIIN: 00-090-0636
In stock
NSN: 5331-00-090-0636
FSC Code: 5331
MPN: 517034

5331-01-267-1719 (517401)

NIIN: 01-267-1719
In stock
NSN: 5331-01-267-1719
FSC Code: 5331
MPN: 517401

5331-00-939-2246 (519857)

NIIN: 00-939-2246
In stock
NSN: 5331-00-939-2246
FSC Code: 5331
MPN: 519857

5331-00-925-9901 (520910)

NIIN: 00-925-9901
In stock
NSN: 5331-00-925-9901
FSC Code: 5331
MPN: 520910

5331-01-280-7511 (521014)

NIIN: 01-280-7511
In stock
NSN: 5331-01-280-7511
FSC Code: 5331
MPN: 521014

5331-01-285-9266 (521019)

NIIN: 01-285-9266
In stock
NSN: 5331-01-285-9266
FSC Code: 5331
MPN: 521019

5331-01-274-6009 (521418)

NIIN: 01-274-6009
In stock
NSN: 5331-01-274-6009
FSC Code: 5331
MPN: 521418

5331-00-066-9342 (521629)

NIIN: 00-066-9342
In stock
NSN: 5331-00-066-9342
FSC Code: 5331
MPN: 521629

5331-00-514-4290 (522120)

NIIN: 00-514-4290
In stock
NSN: 5331-00-514-4290
FSC Code: 5331
MPN: 522120

5331-00-514-4291 (522119)

NIIN: 00-514-4291
In stock
NSN: 5331-00-514-4291
FSC Code: 5331
MPN: 522119

5331-00-582-7141 (522550)

NIIN: 00-582-7141
In stock
NSN: 5331-00-582-7141
FSC Code: 5331
MPN: 522550

5331-00-580-4197 (522742)

NIIN: 00-580-4197
In stock
NSN: 5331-00-580-4197
FSC Code: 5331
MPN: 522742

5331-01-137-9583 (522765)

NIIN: 01-137-9583
In stock
NSN: 5331-01-137-9583
FSC Code: 5331
MPN: 522765

5331-01-267-4117 (523118)

NIIN: 01-267-4117
In stock
NSN: 5331-01-267-4117
FSC Code: 5331
MPN: 523118

5331-00-494-2747 (523413)

NIIN: 00-494-2747
In stock
NSN: 5331-00-494-2747
FSC Code: 5331
MPN: 523413

5331-00-494-2755 (523446)

NIIN: 00-494-2755
In stock
NSN: 5331-00-494-2755
FSC Code: 5331
MPN: 523446

5331-01-003-9555 (523414)

NIIN: 01-003-9555
In stock
NSN: 5331-01-003-9555
FSC Code: 5331
MPN: 523414

5331-00-494-2748 (523418)

NIIN: 00-494-2748
In stock
NSN: 5331-00-494-2748
FSC Code: 5331
MPN: 523418

5331-00-392-0819 (523443)

NIIN: 00-392-0819
In stock
NSN: 5331-00-392-0819
FSC Code: 5331
MPN: 523443

5331-00-519-6661 (523442)

NIIN: 00-519-6661
In stock
NSN: 5331-00-519-6661
FSC Code: 5331
MPN: 523442

5331-00-494-2750 (523448)

NIIN: 00-494-2750
In stock
NSN: 5331-00-494-2750
FSC Code: 5331
MPN: 523448

5331-00-222-1549 (523427)

NIIN: 00-222-1549
In stock
NSN: 5331-00-222-1549
FSC Code: 5331
MPN: 523427

5331-01-183-1277 (523666)

NIIN: 01-183-1277
In stock
NSN: 5331-01-183-1277
FSC Code: 5331
MPN: 523666

5331-01-238-3913 (523606)

NIIN: 01-238-3913
In stock
NSN: 5331-01-238-3913
FSC Code: 5331
MPN: 523606

5331-01-183-1279 (523665)

NIIN: 01-183-1279
In stock
NSN: 5331-01-183-1279
FSC Code: 5331
MPN: 523665

5331-00-900-1820 (523871)

NIIN: 00-900-1820
In stock
NSN: 5331-00-900-1820
FSC Code: 5331
MPN: 523871

5331-00-580-3789 (524439)

NIIN: 00-580-3789
In stock
NSN: 5331-00-580-3789
FSC Code: 5331
MPN: 524439

5331-00-725-6638 (524419)

NIIN: 00-725-6638
In stock
NSN: 5331-00-725-6638
FSC Code: 5331
MPN: 524419

5331-00-338-4642 (524617)

NIIN: 00-338-4642
In stock
NSN: 5331-00-338-4642
FSC Code: 5331
MPN: 524617

5331-00-652-3311 (524609)

NIIN: 00-652-3311
In stock
NSN: 5331-00-652-3311
FSC Code: 5331
MPN: 524609

5331-00-323-8931 (524794)

NIIN: 00-323-8931
In stock
NSN: 5331-00-323-8931
FSC Code: 5331
MPN: 524794

5331-00-768-5663 (524935)

NIIN: 00-768-5663
In stock
NSN: 5331-00-768-5663
FSC Code: 5331
MPN: 524935

5331-00-773-6254 (527555)

NIIN: 00-773-6254
In stock
NSN: 5331-00-773-6254
FSC Code: 5331
MPN: 527555

5331-01-113-9103 (528795)

NIIN: 01-113-9103
In stock
NSN: 5331-01-113-9103
FSC Code: 5331
MPN: 528795

5331-01-138-4616 (530376)

NIIN: 01-138-4616
In stock
NSN: 5331-01-138-4616
FSC Code: 5331
MPN: 530376

5331-00-506-3506 (532282)

NIIN: 00-506-3506
In stock
NSN: 5331-00-506-3506
FSC Code: 5331
MPN: 532282

5331-00-506-3766 (532257)

NIIN: 00-506-3766
In stock
NSN: 5331-00-506-3766
FSC Code: 5331
MPN: 532257

5331-00-338-6785 (533134)

NIIN: 00-338-6785
In stock
NSN: 5331-00-338-6785
FSC Code: 5331
MPN: 533134

5331-00-366-2414 (534662)

NIIN: 00-366-2414
In stock
NSN: 5331-00-366-2414
FSC Code: 5331
MPN: 534662

5331-00-799-9023 (536509)

NIIN: 00-799-9023
In stock
NSN: 5331-00-799-9023
FSC Code: 5331
MPN: 536509

5331-00-799-9020 (536498)

NIIN: 00-799-9020
In stock
NSN: 5331-00-799-9020
FSC Code: 5331
MPN: 536498

5331-00-506-3765 (536580)

NIIN: 00-506-3765
In stock
NSN: 5331-00-506-3765
FSC Code: 5331
MPN: 536580

5331-01-022-8790 (536579)

NIIN: 01-022-8790
In stock
NSN: 5331-01-022-8790
FSC Code: 5331
MPN: 536579

5331-00-699-0559 (539913)

NIIN: 00-699-0559
In stock
NSN: 5331-00-699-0559
FSC Code: 5331
MPN: 539913