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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.

5331-00-397-5491 (4144-32)

NIIN: 00-397-5491
In stock
NSN: 5331-00-397-5491
FSC Code: 5331
MPN: 414432

5331-00-163-6922 (41436-14)

NIIN: 00-163-6922
In stock
NSN: 5331-00-163-6922
FSC Code: 5331
MPN: 4143614

5331-01-022-1992 (4142-53)

NIIN: 01-022-1992
In stock
NSN: 5331-01-022-1992
FSC Code: 5331
MPN: 414253

5331-01-431-4362 (14-134)

NIIN: 01-431-4362
In stock
NSN: 5331-01-431-4362
FSC Code: 5331
MPN: 14134

5331-01-431-3319 (14-133)

NIIN: 01-431-3319
In stock
NSN: 5331-01-431-3319
FSC Code: 5331
MPN: 14133

5331-01-113-9869 (414193-57)

NIIN: 01-113-9869
In stock
NSN: 5331-01-113-9869
FSC Code: 5331
MPN: 41419357

5331-01-257-3806 (414193-4)

NIIN: 01-257-3806
In stock
NSN: 5331-01-257-3806
FSC Code: 5331
MPN: 4141934

5331-01-124-2452 (414193-22)

NIIN: 01-124-2452
In stock
NSN: 5331-01-124-2452
FSC Code: 5331
MPN: 41419322

5331-01-089-1584 (414193-101)

NIIN: 01-089-1584
In stock
NSN: 5331-01-089-1584
FSC Code: 5331
MPN: 414193101

5331-01-289-1815 (413C)

NIIN: 01-289-1815
In stock
NSN: 5331-01-289-1815
FSC Code: 5331
MPN: 413C

5331-01-029-1820 (4-136-13)

NIIN: 01-029-1820
In stock
NSN: 5331-01-029-1820
FSC Code: 5331
MPN: 413613

5331-01-371-2342 (1-410-210-037)

NIIN: 01-371-2342
In stock
NSN: 5331-01-371-2342
FSC Code: 5331
MPN: 1410210037

5331-00-872-3808 (4134-77)

NIIN: 00-872-3808
In stock
NSN: 5331-00-872-3808
FSC Code: 5331
MPN: 413477

5331-01-029-1814 (4-134-6)

NIIN: 01-029-1814
In stock
NSN: 5331-01-029-1814
FSC Code: 5331
MPN: 41346

5331-01-524-4317 (M134.5-3.0)

NIIN: 01-524-4317
In stock
NSN: 5331-01-524-4317
FSC Code: 5331
MPN: M134530

5331-01-533-7587 (M148.0-3.0)

NIIN: 01-533-7587
In stock
NSN: 5331-01-533-7587
FSC Code: 5331
MPN: M148030

5331-01-559-5260 (2-255N674)

NIIN: 01-559-5260
In stock
NSN: 5331-01-559-5260
FSC Code: 5331
MPN: 2255N674

5331-01-559-5329 (2-230S70)

NIIN: 01-559-5329
In stock
NSN: 5331-01-559-5329
FSC Code: 5331
MPN: 2230S70

5331-01-101-1363 (413-0568-010)

NIIN: 01-101-1363
In stock
NSN: 5331-01-101-1363
FSC Code: 5331
MPN: 4130568010

5331-01-101-0586 (413-0568-007)

NIIN: 01-101-0586
In stock
NSN: 5331-01-101-0586
FSC Code: 5331
MPN: 4130568007

5331-01-101-0593 (413-0568-113)

NIIN: 01-101-0593
In stock
NSN: 5331-01-101-0593
FSC Code: 5331
MPN: 4130568113

5331-01-209-1022 (413-0568-210)

NIIN: 01-209-1022
In stock
NSN: 5331-01-209-1022
FSC Code: 5331
MPN: 4130568210

5331-01-273-6269 (412-9803)

NIIN: 01-273-6269
In stock
NSN: 5331-01-273-6269
FSC Code: 5331
MPN: 4129803

5331-01-159-1531 (41-2963)

NIIN: 01-159-1531
In stock
NSN: 5331-01-159-1531
FSC Code: 5331
MPN: 412963

5331-01-159-1529 (41-2977)

NIIN: 01-159-1529
In stock
NSN: 5331-01-159-1529
FSC Code: 5331
MPN: 412977

5331-00-093-7600 (4126416-1)

NIIN: 00-093-7600
In stock
NSN: 5331-00-093-7600
FSC Code: 5331
MPN: 41264161

5331-01-166-7950 (41-2642)

NIIN: 01-166-7950
In stock
NSN: 5331-01-166-7950
FSC Code: 5331
MPN: 412642

5331-01-161-2401 (41-2533)

NIIN: 01-161-2401
In stock
NSN: 5331-01-161-2401
FSC Code: 5331
MPN: 412533

5331-01-321-9639 (41-2515)

NIIN: 01-321-9639
In stock
NSN: 5331-01-321-9639
FSC Code: 5331
MPN: 412515

5331-00-888-1230 (412509-2)

NIIN: 00-888-1230
In stock
NSN: 5331-00-888-1230
FSC Code: 5331
MPN: 4125092

5331-01-470-3122 (140-7969)

NIIN: 01-470-3122
In stock
NSN: 5331-01-470-3122
FSC Code: 5331
MPN: 1407969

5331-01-321-9640 (41-2482)

NIIN: 01-321-9640
In stock
NSN: 5331-01-321-9640
FSC Code: 5331
MPN: 412482

5331-01-066-3545 (412-4678004)

NIIN: 01-066-3545
In stock
NSN: 5331-01-066-3545
FSC Code: 5331
MPN: 4124678004

5331-01-572-2512 (140675-007)

NIIN: 01-572-2512
In stock
NSN: 5331-01-572-2512
FSC Code: 5331
MPN: 140675007

5331-01-572-2509 (140675-006)

NIIN: 01-572-2509
In stock
NSN: 5331-01-572-2509
FSC Code: 5331
MPN: 140675006

5331-01-475-7834 (140675-008)

NIIN: 01-475-7834
In stock
NSN: 5331-01-475-7834
FSC Code: 5331
MPN: 140675008

5331-01-144-8815 (4122-49)

NIIN: 01-144-8815
In stock
NSN: 5331-01-144-8815
FSC Code: 5331
MPN: 412249

5331-01-475-7828 (140675-005)

NIIN: 01-475-7828
In stock
NSN: 5331-01-475-7828
FSC Code: 5331
MPN: 140675005

5331-01-500-2573 (1405623Q03)

NIIN: 01-500-2573
In stock
NSN: 5331-01-500-2573
FSC Code: 5331
MPN: 1405623Q03

5331-01-330-2086 (41212-P5)

NIIN: 01-330-2086
In stock
NSN: 5331-01-330-2086
FSC Code: 5331
MPN: 41212P5

5331-01-159-1530 (41-2065)

NIIN: 01-159-1530
In stock
NSN: 5331-01-159-1530
FSC Code: 5331
MPN: 412065

5331-00-122-0537 (411BSE6)

NIIN: 00-122-0537
In stock
NSN: 5331-00-122-0537
FSC Code: 5331
MPN: 411BSE6

5331-01-572-2503 (140406-920)

NIIN: 01-572-2503
In stock
NSN: 5331-01-572-2503
FSC Code: 5331
MPN: 140406920

5331-01-126-9086 (4119-20)

NIIN: 01-126-9086
In stock
NSN: 5331-01-126-9086
FSC Code: 5331
MPN: 411920

5331-01-572-2480 (140406-908)

NIIN: 01-572-2480
In stock
NSN: 5331-01-572-2480
FSC Code: 5331
MPN: 140406908

5331-01-475-7816 (140406-905)

NIIN: 01-475-7816
In stock
NSN: 5331-01-475-7816
FSC Code: 5331
MPN: 140406905

5331-01-475-7817 (140406-924)

NIIN: 01-475-7817
In stock
NSN: 5331-01-475-7817
FSC Code: 5331
MPN: 140406924

5331-01-475-7824 (140406-912)

NIIN: 01-475-7824
In stock
NSN: 5331-01-475-7824
FSC Code: 5331
MPN: 140406912