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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.

5331-01-124-1105 (4400481-0140)

NIIN: 01-124-1105
In stock
NSN: 5331-01-124-1105
FSC Code: 5331
MPN: 44004810140

5331-01-165-4664 (4400472-0100)

NIIN: 01-165-4664
In stock
NSN: 5331-01-165-4664
FSC Code: 5331
MPN: 44004720100

5331-00-180-9551 (4400481-0100)

NIIN: 00-180-9551
In stock
NSN: 5331-00-180-9551
FSC Code: 5331
MPN: 44004810100

5331-00-180-9550 (4400481-0080)

NIIN: 00-180-9550
In stock
NSN: 5331-00-180-9550
FSC Code: 5331
MPN: 44004810080

5331-01-208-3769 (440-048-0050)

NIIN: 01-208-3769
In stock
NSN: 5331-01-208-3769
FSC Code: 5331
MPN: 4400480050

5331-00-841-9281 (4400461-1310)

NIIN: 00-841-9281
In stock
NSN: 5331-00-841-9281
FSC Code: 5331
MPN: 44004611310

5331-00-839-6172 (4400461-1410)

NIIN: 00-839-6172
In stock
NSN: 5331-00-839-6172
FSC Code: 5331
MPN: 44004611410

5331-00-149-8752 (4400191-1140)

NIIN: 00-149-8752
In stock
NSN: 5331-00-149-8752
FSC Code: 5331
MPN: 44001911140

5331-00-058-1407 (4400181-2310)

NIIN: 00-058-1407
In stock
NSN: 5331-00-058-1407
FSC Code: 5331
MPN: 44001812310

5331-01-171-1308 (4400181-1450)

NIIN: 01-171-1308
In stock
NSN: 5331-01-171-1308
FSC Code: 5331
MPN: 44001811450

5331-00-873-0521 (4400191-0030)

NIIN: 00-873-0521
In stock
NSN: 5331-00-873-0521
FSC Code: 5331
MPN: 44001910030

5331-00-269-2693 (4400181-1380)

NIIN: 00-269-2693
In stock
NSN: 5331-00-269-2693
FSC Code: 5331
MPN: 44001811380

5331-00-050-9264 (4400181-1480)

NIIN: 00-050-9264
In stock
NSN: 5331-00-050-9264
FSC Code: 5331
MPN: 44001811480

5331-00-137-6577 (4400181-1370)

NIIN: 00-137-6577
In stock
NSN: 5331-00-137-6577
FSC Code: 5331
MPN: 44001811370

5331-00-058-1406 (4400181-2260)

NIIN: 00-058-1406
In stock
NSN: 5331-00-058-1406
FSC Code: 5331
MPN: 44001812260

5331-00-138-9854 (4400181-1430)

NIIN: 00-138-9854
In stock
NSN: 5331-00-138-9854
FSC Code: 5331
MPN: 44001811430

5331-00-058-1404 (4400181-2130)

NIIN: 00-058-1404
In stock
NSN: 5331-00-058-1404
FSC Code: 5331
MPN: 44001812130

5331-00-137-6575 (4400181-1250)

NIIN: 00-137-6575
In stock
NSN: 5331-00-137-6575
FSC Code: 5331
MPN: 44001811250

5331-00-916-9422 (4400181-1120)

NIIN: 00-916-9422
In stock
NSN: 5331-00-916-9422
FSC Code: 5331
MPN: 44001811120

5331-00-052-1502 (4400181-0330)

NIIN: 00-052-1502
In stock
NSN: 5331-00-052-1502
FSC Code: 5331
MPN: 44001810330

5331-00-965-5186 (4400181-0230)

NIIN: 00-965-5186
In stock
NSN: 5331-00-965-5186
FSC Code: 5331
MPN: 44001810230

5331-00-052-1503 (4400181-0340)

NIIN: 00-052-1503
In stock
NSN: 5331-00-052-1503
FSC Code: 5331
MPN: 44001810340

5331-01-012-5168 (4400181-1330)

NIIN: 01-012-5168
In stock
NSN: 5331-01-012-5168
FSC Code: 5331
MPN: 44001811330

5331-00-486-6331 (4400181-0220)

NIIN: 00-486-6331
In stock
NSN: 5331-00-486-6331
FSC Code: 5331
MPN: 44001810220

5331-00-087-3770 (440-0181-0280)

NIIN: 00-087-3770
In stock
NSN: 5331-00-087-3770
FSC Code: 5331
MPN: 44001810280

5331-00-916-6645 (4400181-0100)

NIIN: 00-916-6645
In stock
NSN: 5331-00-916-6645
FSC Code: 5331
MPN: 44001810100

5331-00-139-6847 (4400181-0200)

NIIN: 00-139-6847
In stock
NSN: 5331-00-139-6847
FSC Code: 5331
MPN: 44001810200

5331-00-068-8473 (4400181-0050)

NIIN: 00-068-8473
In stock
NSN: 5331-00-068-8473
FSC Code: 5331
MPN: 44001810050

5331-01-253-0849 (4400181-0100)

NIIN: 01-253-0849
In stock
NSN: 5331-01-253-0849
FSC Code: 5331
MPN: 44001810100

5331-00-045-7478 (4400181-0170)

NIIN: 00-045-7478
In stock
NSN: 5331-00-045-7478
FSC Code: 5331
MPN: 44001810170

5331-00-936-9558 (4400181-0060)

NIIN: 00-936-9558
In stock
NSN: 5331-00-936-9558
FSC Code: 5331
MPN: 44001810060

5331-00-909-3260 (4400181-0030)

NIIN: 00-909-3260
In stock
NSN: 5331-00-909-3260
FSC Code: 5331
MPN: 44001810030

5331-01-171-1319 (4400173-2770)

NIIN: 01-171-1319
In stock
NSN: 5331-01-171-1319
FSC Code: 5331
MPN: 44001732770

5331-00-918-9499 (4400173-9100)

NIIN: 00-918-9499
In stock
NSN: 5331-00-918-9499
FSC Code: 5331
MPN: 44001739100

5331-01-011-5357 (4400173-1120)

NIIN: 01-011-5357
In stock
NSN: 5331-01-011-5357
FSC Code: 5331
MPN: 44001731120

5331-00-050-9261 (4400173-1470)

NIIN: 00-050-9261
In stock
NSN: 5331-00-050-9261
FSC Code: 5331
MPN: 44001731470

5331-01-474-2057 (151-7517)

NIIN: 01-474-2057
In stock
NSN: 5331-01-474-2057
FSC Code: 5331
MPN: 1517517

5331-00-288-2530 (4400173-1390)

NIIN: 00-288-2530
In stock
NSN: 5331-00-288-2530
FSC Code: 5331
MPN: 44001731390

5331-01-474-2046 (151-7512)

NIIN: 01-474-2046
In stock
NSN: 5331-01-474-2046
FSC Code: 5331
MPN: 1517512

5331-01-210-4982 (4400173-0320)

NIIN: 01-210-4982
In stock
NSN: 5331-01-210-4982
FSC Code: 5331
MPN: 44001730320

5331-01-243-3776 (4400173-1240)

NIIN: 01-243-3776
In stock
NSN: 5331-01-243-3776
FSC Code: 5331
MPN: 44001731240

5331-00-866-9263 (4400173-0200)

NIIN: 00-866-9263
In stock
NSN: 5331-00-866-9263
FSC Code: 5331
MPN: 44001730200

5331-01-205-5622 (4400173-0170)

NIIN: 01-205-5622
In stock
NSN: 5331-01-205-5622
FSC Code: 5331
MPN: 44001730170

5331-00-119-4868 (440-0172-0140)

NIIN: 00-119-4868
In stock
NSN: 5331-00-119-4868
FSC Code: 5331
MPN: 44001720140

5331-00-530-0138 (4400171-1170)

NIIN: 00-530-0138
In stock
NSN: 5331-00-530-0138
FSC Code: 5331
MPN: 44001711170

5331-01-101-6073 (4400171-1190)

NIIN: 01-101-6073
In stock
NSN: 5331-01-101-6073
FSC Code: 5331
MPN: 44001711190

5331-01-029-9921 (4400171-1250)

NIIN: 01-029-9921
In stock
NSN: 5331-01-029-9921
FSC Code: 5331
MPN: 44001711250

5331-01-135-9414 (4400171-0290)

NIIN: 01-135-9414
In stock
NSN: 5331-01-135-9414
FSC Code: 5331
MPN: 44001710290