Skip to content

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.

5331-00-148-1073 (2601425-916)

NIIN: 00-148-1073
In stock
NSN: 5331-00-148-1073
FSC Code: 5331
MPN: 2601425916

5331-01-279-8615 (2601425-247)

NIIN: 01-279-8615
In stock
NSN: 5331-01-279-8615
FSC Code: 5331
MPN: 2601425247

5331-00-426-2095 (2601730-15)

NIIN: 00-426-2095
In stock
NSN: 5331-00-426-2095
FSC Code: 5331
MPN: 260173015

5331-00-426-2099 (2601730-13)

NIIN: 00-426-2099
In stock
NSN: 5331-00-426-2099
FSC Code: 5331
MPN: 260173013

5331-00-414-7167 (2601730-20)

NIIN: 00-414-7167
In stock
NSN: 5331-00-414-7167
FSC Code: 5331
MPN: 260173020

5331-01-015-9615 (2601730-14)

NIIN: 01-015-9615
In stock
NSN: 5331-01-015-9615
FSC Code: 5331
MPN: 260173014

5331-00-451-8519 (2601755-10)

NIIN: 00-451-8519
In stock
NSN: 5331-00-451-8519
FSC Code: 5331
MPN: 260175510

5331-00-451-8528 (2601755-14)

NIIN: 00-451-8528
In stock
NSN: 5331-00-451-8528
FSC Code: 5331
MPN: 260175514

5331-00-451-8523 (2601755-11)

NIIN: 00-451-8523
In stock
NSN: 5331-00-451-8523
FSC Code: 5331
MPN: 260175511

5331-00-451-8526 (2601755-5)

NIIN: 00-451-8526
In stock
NSN: 5331-00-451-8526
FSC Code: 5331
MPN: 26017555

5331-01-123-4532 (26-018)

NIIN: 01-123-4532
In stock
NSN: 5331-01-123-4532
FSC Code: 5331
MPN: 26018

5331-00-451-8520 (2601755-9)

NIIN: 00-451-8520
In stock
NSN: 5331-00-451-8520
FSC Code: 5331
MPN: 26017559

5331-00-414-7171 (2601730-24)

NIIN: 00-414-7171
In stock
NSN: 5331-00-414-7171
FSC Code: 5331
MPN: 260173024

5331-00-451-8517 (2601755-7)

NIIN: 00-451-8517
In stock
NSN: 5331-00-451-8517
FSC Code: 5331
MPN: 26017557

5331-01-095-4642 (2602-070S70)

NIIN: 01-095-4642
In stock
NSN: 5331-01-095-4642
FSC Code: 5331
MPN: 2602070S70

5331-01-471-5900 (04-1200-55)

NIIN: 01-471-5900
In stock
NSN: 5331-01-471-5900
FSC Code: 5331
MPN: 04120055

5331-01-572-3093 (FN 17 114451010FN17)

NIIN: 01-572-3093
In stock
NSN: 5331-01-572-3093
FSC Code: 5331
MPN: FN17114451010FN17

5331-99-923-7778 (BSISO3601-1SIZE349)

NIIN: 99-923-7778
In stock
NSN: 5331-99-923-7778
FSC Code: 5331
MPN: BSISO36011SIZE349

5331-99-923-7758 (JW24000-O.S.30-BA70)

NIIN: 99-923-7758
In stock
NSN: 5331-99-923-7758
FSC Code: 5331
MPN: JW24000OS30BA70

5331-99-943-1638 (FL1554AISSUE3ITEM12)

NIIN: 99-943-1638
In stock
NSN: 5331-99-943-1638
FSC Code: 5331
MPN: FL1554AISSUE3ITEM12

5331-99-900-9158 (VA-49-0042-031)

NIIN: 99-900-9158
In stock
NSN: 5331-99-900-9158
FSC Code: 5331
MPN: VA490042031

5331-01-251-3386 (260-490)

NIIN: 01-251-3386
In stock
NSN: 5331-01-251-3386
FSC Code: 5331
MPN: 260490

5331-01-095-5743 (2606136-223)

NIIN: 01-095-5743
In stock
NSN: 5331-01-095-5743
FSC Code: 5331
MPN: 2606136223

5331-01-210-0638 (260857-5)

NIIN: 01-210-0638
In stock
NSN: 5331-01-210-0638
FSC Code: 5331
MPN: 2608575

5331-01-210-0635 (260857-2)

NIIN: 01-210-0635
In stock
NSN: 5331-01-210-0635
FSC Code: 5331
MPN: 2608572

5331-01-468-6832 (0421051239-2)

NIIN: 01-468-6832
In stock
NSN: 5331-01-468-6832
FSC Code: 5331
MPN: 04210512392

5331-01-451-2114 (04211-52)

NIIN: 01-451-2114
In stock
NSN: 5331-01-451-2114
FSC Code: 5331
MPN: 0421152

5331-01-543-2131 (FN 22 114451003FN22)

NIIN: 01-543-2131
In stock
NSN: 5331-01-543-2131
FSC Code: 5331
MPN: FN22114451003FN22

5331-01-340-8183 (0421061239-2)

NIIN: 01-340-8183
In stock
NSN: 5331-01-340-8183
FSC Code: 5331
MPN: 04210612392

5331-01-336-6716 (2609782-227)

NIIN: 01-336-6716
In stock
NSN: 5331-01-336-6716
FSC Code: 5331
MPN: 2609782227

5331-01-529-1524 (04211-52-Q)

NIIN: 01-529-1524
In stock
NSN: 5331-01-529-1524
FSC Code: 5331
MPN: 0421152Q

5331-01-210-0637 (260857-4)

NIIN: 01-210-0637
In stock
NSN: 5331-01-210-0637
FSC Code: 5331
MPN: 2608574

5331-01-336-6715 (2608972-252)

NIIN: 01-336-6715
In stock
NSN: 5331-01-336-6715
FSC Code: 5331
MPN: 2608972252

5331-01-210-0634 (260857-1)

NIIN: 01-210-0634
In stock
NSN: 5331-01-210-0634
FSC Code: 5331
MPN: 2608571

5331-01-504-5464 (FIND NO.33 112551000FINDNO33)

NIIN: 01-504-5464
In stock
NSN: 5331-01-504-5464
FSC Code: 5331
MPN: FINDNO33112551000FINDNO33

5331-00-252-6041 (260-C-69)

NIIN: 00-252-6041
In stock
NSN: 5331-00-252-6041
FSC Code: 5331
MPN: 260C69

5331-01-567-0843 (04-2650-49-700)

NIIN: 01-567-0843
In stock
NSN: 5331-01-567-0843
FSC Code: 5331
MPN: 04265049700

5331-14-370-9060 (04252C6200A21B6)

NIIN: 14-370-9060
In stock
NSN: 5331-14-370-9060
FSC Code: 5331
MPN: 04252C6200A21B6

5331-99-581-9286 (042BR-077)

NIIN: 99-581-9286
In stock
NSN: 5331-99-581-9286
FSC Code: 5331
MPN: 042BR077

5331-01-248-2709 (261-0280-001)

NIIN: 01-248-2709
In stock
NSN: 5331-01-248-2709
FSC Code: 5331
MPN: 2610280001

5331-01-263-6330 (261-063)

NIIN: 01-263-6330
In stock
NSN: 5331-01-263-6330
FSC Code: 5331
MPN: 261063

5331-01-267-6353 (26-110)

NIIN: 01-267-6353
In stock
NSN: 5331-01-267-6353
FSC Code: 5331
MPN: 26110

5331-01-441-4880 (0432-1000/0432-4000)

NIIN: 01-441-4880
In stock
NSN: 5331-01-441-4880
FSC Code: 5331
MPN: 0432100004324000

5331-01-441-4888 (0432-1000/0432-4000)

NIIN: 01-441-4888
In stock
NSN: 5331-01-441-4888
FSC Code: 5331
MPN: 0432100004324000

5331-00-100-7252 (26-111)

NIIN: 00-100-7252
In stock
NSN: 5331-00-100-7252
FSC Code: 5331
MPN: 26111

5331-01-419-5220 (043473-0000)

NIIN: 01-419-5220
In stock
NSN: 5331-01-419-5220
FSC Code: 5331
MPN: 0434730000

5331-14-374-1387 (04400D0000A50D5)

NIIN: 14-374-1387
In stock
NSN: 5331-14-374-1387
FSC Code: 5331
MPN: 04400D0000A50D5

5331-01-267-6352 (26-114)

NIIN: 01-267-6352
In stock
NSN: 5331-01-267-6352
FSC Code: 5331
MPN: 26114