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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.

5331-01-170-6285 (2-374N674-70)

NIIN: 01-170-6285
In stock
NSN: 5331-01-170-6285
FSC Code: 5331
MPN: 2374N67470

5331-01-129-4337 (23750-14)

NIIN: 01-129-4337
In stock
NSN: 5331-01-129-4337
FSC Code: 5331
MPN: 2375014

5331-00-075-3229 (23750-186)

NIIN: 00-075-3229
In stock
NSN: 5331-00-075-3229
FSC Code: 5331
MPN: 23750186

5331-01-268-9015 (23750-183)

NIIN: 01-268-9015
In stock
NSN: 5331-01-268-9015
FSC Code: 5331
MPN: 23750183

5331-00-470-3389 (23750-13)

NIIN: 00-470-3389
In stock
NSN: 5331-00-470-3389
FSC Code: 5331
MPN: 2375013

5331-01-267-8450 (23750-22)

NIIN: 01-267-8450
In stock
NSN: 5331-01-267-8450
FSC Code: 5331
MPN: 2375022

5331-01-335-6924 (23750-106)

NIIN: 01-335-6924
In stock
NSN: 5331-01-335-6924
FSC Code: 5331
MPN: 23750106

5331-00-476-7456 (23750-69)

NIIN: 00-476-7456
In stock
NSN: 5331-00-476-7456
FSC Code: 5331
MPN: 2375069

5331-01-185-8548 (23750-65)

NIIN: 01-185-8548
In stock
NSN: 5331-01-185-8548
FSC Code: 5331
MPN: 2375065

5331-00-822-0717 (23750-92)

NIIN: 00-822-0717
In stock
NSN: 5331-00-822-0717
FSC Code: 5331
MPN: 2375092

5331-00-455-0509 (23750-71)

NIIN: 00-455-0509
In stock
NSN: 5331-00-455-0509
FSC Code: 5331
MPN: 2375071

5331-01-309-8468 (23750-331)

NIIN: 01-309-8468
In stock
NSN: 5331-01-309-8468
FSC Code: 5331
MPN: 23750331

5331-01-310-1574 (23750-98)

NIIN: 01-310-1574
In stock
NSN: 5331-01-310-1574
FSC Code: 5331
MPN: 2375098

5331-01-047-7959 (23750-73)

NIIN: 01-047-7959
In stock
NSN: 5331-01-047-7959
FSC Code: 5331
MPN: 2375073

5331-00-455-0508 (23750-70)

NIIN: 00-455-0508
In stock
NSN: 5331-00-455-0508
FSC Code: 5331
MPN: 2375070

5331-01-263-8839 (23750-94)

NIIN: 01-263-8839
In stock
NSN: 5331-01-263-8839
FSC Code: 5331
MPN: 2375094

5331-01-047-7957 (23750-72)

NIIN: 01-047-7957
In stock
NSN: 5331-01-047-7957
FSC Code: 5331
MPN: 2375072

5331-00-484-4106 (23750-92)

NIIN: 00-484-4106
In stock
NSN: 5331-00-484-4106
FSC Code: 5331
MPN: 2375092

5331-00-455-0506 (23750-68)

NIIN: 00-455-0506
In stock
NSN: 5331-00-455-0506
FSC Code: 5331
MPN: 2375068

5331-01-485-2211 (1450J37ITEM-7)

NIIN: 01-485-2211
In stock
NSN: 5331-01-485-2211
FSC Code: 5331
MPN: 1450J37ITEM7

5331-01-006-2123 (2-375-V747)

NIIN: 01-006-2123
In stock
NSN: 5331-01-006-2123
FSC Code: 5331
MPN: 2375V747

5331-01-303-5376 (237-6010)

NIIN: 01-303-5376
In stock
NSN: 5331-01-303-5376
FSC Code: 5331
MPN: 2376010

5331-01-272-1113 (2-375C1124-70)

NIIN: 01-272-1113
In stock
NSN: 5331-01-272-1113
FSC Code: 5331
MPN: 2375C112470

5331-00-250-9634 (237-6014)

NIIN: 00-250-9634
In stock
NSN: 5331-00-250-9634
FSC Code: 5331
MPN: 2376014

5331-01-006-3932 (2-376V0747-75)

NIIN: 01-006-3932
In stock
NSN: 5331-01-006-3932
FSC Code: 5331
MPN: 2376V074775

5331-01-147-4064 (2-377N304-75)

NIIN: 01-147-4064
In stock
NSN: 5331-01-147-4064
FSC Code: 5331
MPN: 2377N30475

5331-01-005-2305 (2-377V0747-75)

NIIN: 01-005-2305
In stock
NSN: 5331-01-005-2305
FSC Code: 5331
MPN: 2377V074775

5331-01-439-4571 (013-19359)

NIIN: 01-439-4571
In stock
NSN: 5331-01-439-4571
FSC Code: 5331
MPN: 01319359

5331-01-450-2519 (01-3200-52)

NIIN: 01-450-2519
In stock
NSN: 5331-01-450-2519
FSC Code: 5331
MPN: 01320052

5331-14-402-3278 (01320C5000A21B6)

NIIN: 14-402-3278
In stock
NSN: 5331-14-402-3278
FSC Code: 5331
MPN: 01320C5000A21B6

5331-14-390-8237 (JTO013.2X2.5-24B7)

NIIN: 14-390-8237
In stock
NSN: 5331-14-390-8237
FSC Code: 5331
MPN: JTO0132X2524B7

5331-14-300-1661 (01320C5000A20B7)

NIIN: 14-300-1661
In stock
NSN: 5331-14-300-1661
FSC Code: 5331
MPN: 01320C5000A20B7

5331-00-465-5682 (2-378E515-80)

NIIN: 00-465-5682
In stock
NSN: 5331-00-465-5682
FSC Code: 5331
MPN: 2378E51580

5331-01-217-2952 (2-378N602-70)

NIIN: 01-217-2952
In stock
NSN: 5331-01-217-2952
FSC Code: 5331
MPN: 2378N60270

5331-01-441-2656 (013-2359)

NIIN: 01-441-2656
In stock
NSN: 5331-01-441-2656
FSC Code: 5331
MPN: 0132359

5331-01-376-6829 (ITEM 33 112151005ITEM33)

NIIN: 01-376-6829
In stock
NSN: 5331-01-376-6829
FSC Code: 5331
MPN: ITEM33112151005ITEM33

5331-01-024-7095 (2-379N304-75)

NIIN: 01-024-7095
In stock
NSN: 5331-01-024-7095
FSC Code: 5331
MPN: 2379N30475

5331-01-005-0526 (2-379V0747-75)

NIIN: 01-005-0526
In stock
NSN: 5331-01-005-0526
FSC Code: 5331
MPN: 2379V074775

5331-01-004-9551 (2-378V0747-75)

NIIN: 01-004-9551
In stock
NSN: 5331-01-004-9551
FSC Code: 5331
MPN: 2378V074775

5331-01-320-4923 (2-379-S604-70)

NIIN: 01-320-4923
In stock
NSN: 5331-01-320-4923
FSC Code: 5331
MPN: 2379S60470

5331-01-233-8695 (2-379-C1124-70)

NIIN: 01-233-8695
In stock
NSN: 5331-01-233-8695
FSC Code: 5331
MPN: 2379C112470

5331-01-327-5511 (237B3655P1)

NIIN: 01-327-5511
In stock
NSN: 5331-01-327-5511
FSC Code: 5331
MPN: 237B3655P1

5331-01-018-0863 (237E040)

NIIN: 01-018-0863
In stock
NSN: 5331-01-018-0863
FSC Code: 5331
MPN: 237E040

5331-01-005-0527 (2-380-V884-75)

NIIN: 01-005-0527
In stock
NSN: 5331-01-005-0527
FSC Code: 5331
MPN: 2380V88475

5331-01-551-4827 (013-517)

NIIN: 01-551-4827
In stock
NSN: 5331-01-551-4827
FSC Code: 5331
MPN: 013517

5331-99-567-0411 (01-351-8654)

NIIN: 99-567-0411
In stock
NSN: 5331-99-567-0411
FSC Code: 5331
MPN: 013518654

5331-01-026-4387 (2-381)

NIIN: 01-026-4387
In stock
NSN: 5331-01-026-4387
FSC Code: 5331
MPN: 2381

5331-01-267-6358 (2-381N674-70)

NIIN: 01-267-6358
In stock
NSN: 5331-01-267-6358
FSC Code: 5331
MPN: 2381N67470