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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.

5331-00-308-2325 (4400171-0230)

NIIN: 00-308-2325
In stock
NSN: 5331-00-308-2325
FSC Code: 5331
MPN: 44001710230

5331-01-303-5385 (4400161-1130)

NIIN: 01-303-5385
In stock
NSN: 5331-01-303-5385
FSC Code: 5331
MPN: 44001611130

5331-01-154-0654 (43P683)

NIIN: 01-154-0654
In stock
NSN: 5331-01-154-0654
FSC Code: 5331
MPN: 43P683

5331-01-508-7387 (15142-PH3-003)

NIIN: 01-508-7387
In stock
NSN: 5331-01-508-7387
FSC Code: 5331
MPN: 15142PH3003

5331-01-410-7257 (15-141-01)

NIIN: 01-410-7257
In stock
NSN: 5331-01-410-7257
FSC Code: 5331
MPN: 1514101

5331-01-437-4656 (15128-000)

NIIN: 01-437-4656
In stock
NSN: 5331-01-437-4656
FSC Code: 5331
MPN: 15128000

5331-00-869-3117 (4390879-8)

NIIN: 00-869-3117
In stock
NSN: 5331-00-869-3117
FSC Code: 5331
MPN: 43908798

5331-01-124-2957 (43-9)

NIIN: 01-124-2957
In stock
NSN: 5331-01-124-2957
FSC Code: 5331
MPN: 439

5331-01-542-6978 (15108-43290)

NIIN: 01-542-6978
In stock
NSN: 5331-01-542-6978
FSC Code: 5331
MPN: 1510843290

5331-01-435-6365 (15107-4329-0)

NIIN: 01-435-6365
In stock
NSN: 5331-01-435-6365
FSC Code: 5331
MPN: 1510743290

5331-01-049-4259 (43893-P1)

NIIN: 01-049-4259
In stock
NSN: 5331-01-049-4259
FSC Code: 5331
MPN: 43893P1

5331-01-420-1531 (15106-090)

NIIN: 01-420-1531
In stock
NSN: 5331-01-420-1531
FSC Code: 5331
MPN: 15106090

5331-01-560-6771 (1-510-033)

NIIN: 01-560-6771
In stock
NSN: 5331-01-560-6771
FSC Code: 5331
MPN: 1510033

5331-01-560-6772 (1-510-007)

NIIN: 01-560-6772
In stock
NSN: 5331-01-560-6772
FSC Code: 5331
MPN: 1510007

5331-00-564-9393 (437964-1)

NIIN: 00-564-9393
In stock
NSN: 5331-00-564-9393
FSC Code: 5331
MPN: 4379641

5331-00-520-1060 (437964-3)

NIIN: 00-520-1060
In stock
NSN: 5331-00-520-1060
FSC Code: 5331
MPN: 4379643

5331-12-192-4613 (CVR-700429150001)

NIIN: 12-192-4613
In stock
NSN: 5331-12-192-4613
FSC Code: 5331
MPN: CVR700429150001

5331-00-634-9399 (4379178-9)

NIIN: 00-634-9399
In stock
NSN: 5331-00-634-9399
FSC Code: 5331
MPN: 43791789

5331-01-552-5684 (ORM0400-1500)

NIIN: 01-552-5684
In stock
NSN: 5331-01-552-5684
FSC Code: 5331
MPN: ORM04001500

5331-01-284-6649 (437-7090)

NIIN: 01-284-6649
In stock
NSN: 5331-01-284-6649
FSC Code: 5331
MPN: 4377090

5331-01-284-6650 (437-7091)

NIIN: 01-284-6650
In stock
NSN: 5331-01-284-6650
FSC Code: 5331
MPN: 4377091

5331-00-156-2968 (4-37106)

NIIN: 00-156-2968
In stock
NSN: 5331-00-156-2968
FSC Code: 5331
MPN: 437106

5331-01-410-8419 (150IDX024W-40CR)

NIIN: 01-410-8419
In stock
NSN: 5331-01-410-8419
FSC Code: 5331
MPN: 150IDX024W40CR

5331-01-161-6050 (436-H-PC25)

NIIN: 01-161-6050
In stock
NSN: 5331-01-161-6050
FSC Code: 5331
MPN: 436HPC25

5331-01-445-9201 (150BMP-337)

NIIN: 01-445-9201
In stock
NSN: 5331-01-445-9201
FSC Code: 5331
MPN: 150BMP337

5331-01-160-4343 (4367-70)

NIIN: 01-160-4343
In stock
NSN: 5331-01-160-4343
FSC Code: 5331
MPN: 436770

5331-01-473-0113 (15097-6)

NIIN: 01-473-0113
In stock
NSN: 5331-01-473-0113
FSC Code: 5331
MPN: 150976

5331-01-430-5374 (702019-435)

NIIN: 01-430-5374
In stock
NSN: 5331-01-430-5374
FSC Code: 5331
MPN: 702019435

5331-01-554-7326 (150-8701)

NIIN: 01-554-7326
In stock
NSN: 5331-01-554-7326
FSC Code: 5331
MPN: 1508701

5331-01-554-7323 (150-8700)

NIIN: 01-554-7323
In stock
NSN: 5331-01-554-7323
FSC Code: 5331
MPN: 1508700

5331-01-554-7335 (150-8699)

NIIN: 01-554-7335
In stock
NSN: 5331-01-554-7335
FSC Code: 5331
MPN: 1508699

5331-00-167-2594 (436-5)

NIIN: 00-167-2594
In stock
NSN: 5331-00-167-2594
FSC Code: 5331
MPN: 4365

5331-01-528-1727 (150-7732)

NIIN: 01-528-1727
In stock
NSN: 5331-01-528-1727
FSC Code: 5331
MPN: 1507732

5331-00-864-6015 (436266-1)

NIIN: 00-864-6015
In stock
NSN: 5331-00-864-6015
FSC Code: 5331
MPN: 4362661

5331-00-782-0212 (436266-2)

NIIN: 00-782-0212
In stock
NSN: 5331-00-782-0212
FSC Code: 5331
MPN: 4362662

5331-01-399-5816 (150-6404646-10)

NIIN: 01-399-5816
In stock
NSN: 5331-01-399-5816
FSC Code: 5331
MPN: 150640464610

5331-01-274-1051 (4358-001)

NIIN: 01-274-1051
In stock
NSN: 5331-01-274-1051
FSC Code: 5331
MPN: 4358001

5331-01-201-2590 (4357-001-1)

NIIN: 01-201-2590
In stock
NSN: 5331-01-201-2590
FSC Code: 5331
MPN: 43570011

5331-01-546-4709 (15058-000)

NIIN: 01-546-4709
In stock
NSN: 5331-01-546-4709
FSC Code: 5331
MPN: 15058000

5331-01-157-1888 (43542-2)

NIIN: 01-157-1888
In stock
NSN: 5331-01-157-1888
FSC Code: 5331
MPN: 435422

5331-01-157-3292 (43542-3)

NIIN: 01-157-3292
In stock
NSN: 5331-01-157-3292
FSC Code: 5331
MPN: 435423

5331-00-298-9981 (435-11-0223)

NIIN: 00-298-9981
In stock
NSN: 5331-00-298-9981
FSC Code: 5331
MPN: 435110223

5331-01-344-2047 (15-0500-03225)

NIIN: 01-344-2047
In stock
NSN: 5331-01-344-2047
FSC Code: 5331
MPN: 15050003225

5331-01-344-4230 (15-0500-03225)

NIIN: 01-344-4230
In stock
NSN: 5331-01-344-4230
FSC Code: 5331
MPN: 15050003225

5331-01-344-0538 (15-0500-03225)

NIIN: 01-344-0538
In stock
NSN: 5331-01-344-0538
FSC Code: 5331
MPN: 15050003225

5331-01-133-9493 (43451A127)

NIIN: 01-133-9493
In stock
NSN: 5331-01-133-9493
FSC Code: 5331
MPN: 43451A127

5331-01-435-9119 (15031C-3IN)

NIIN: 01-435-9119
In stock
NSN: 5331-01-435-9119
FSC Code: 5331
MPN: 15031C3IN

5331-01-441-3396 (3-15031C-19)

NIIN: 01-441-3396
In stock
NSN: 5331-01-441-3396
FSC Code: 5331
MPN: 315031C19