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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.

5331-01-269-0202 (73158-210)

NIIN: 01-269-0202
In stock
NSN: 5331-01-269-0202
FSC Code: 5331
MPN: 73158210

5331-01-269-1250 (73156-261)

NIIN: 01-269-1250
In stock
NSN: 5331-01-269-1250
FSC Code: 5331
MPN: 73156261

5331-01-303-6278 (73-146)

NIIN: 01-303-6278
In stock
NSN: 5331-01-303-6278
FSC Code: 5331
MPN: 73146

5331-01-303-6279 (73-146)

NIIN: 01-303-6279
In stock
NSN: 5331-01-303-6279
FSC Code: 5331
MPN: 73146

5331-01-316-7571 (73-143)

NIIN: 01-316-7571
In stock
NSN: 5331-01-316-7571
FSC Code: 5331
MPN: 73143

5331-01-303-6277 (73-144)

NIIN: 01-303-6277
In stock
NSN: 5331-01-303-6277
FSC Code: 5331
MPN: 73144

5331-01-303-6276 (73-144)

NIIN: 01-303-6276
In stock
NSN: 5331-01-303-6276
FSC Code: 5331
MPN: 73144

5331-01-316-7570 (73-141)

NIIN: 01-316-7570
In stock
NSN: 5331-01-316-7570
FSC Code: 5331
MPN: 73141

5331-01-197-0886 (7-313200063-3)

NIIN: 01-197-0886
In stock
NSN: 5331-01-197-0886
FSC Code: 5331
MPN: 73132000633

5331-01-197-0884 (7-313200054)

NIIN: 01-197-0884
In stock
NSN: 5331-01-197-0884
FSC Code: 5331
MPN: 7313200054

5331-01-197-0885 (7-313200063-11)

NIIN: 01-197-0885
In stock
NSN: 5331-01-197-0885
FSC Code: 5331
MPN: 731320006311

5331-01-359-6721 (33331A)

NIIN: 01-359-6721
In stock
NSN: 5331-01-359-6721
FSC Code: 5331
MPN: 33331A

5331-01-313-5691 (73114-00)

NIIN: 01-313-5691
In stock
NSN: 5331-01-313-5691
FSC Code: 5331
MPN: 7311400

5331-01-311-4628 (73-103-43)

NIIN: 01-311-4628
In stock
NSN: 5331-01-311-4628
FSC Code: 5331
MPN: 7310343

5331-01-464-2554 (33-2959)

NIIN: 01-464-2554
In stock
NSN: 5331-01-464-2554
FSC Code: 5331
MPN: 332959

5331-01-435-0257 (33-2636-REV)

NIIN: 01-435-0257
In stock
NSN: 5331-01-435-0257
FSC Code: 5331
MPN: 332636REV

5331-01-435-0259 (33-2636-REV)

NIIN: 01-435-0259
In stock
NSN: 5331-01-435-0259
FSC Code: 5331
MPN: 332636REV

5331-01-430-2357 (33-2605)

NIIN: 01-430-2357
In stock
NSN: 5331-01-430-2357
FSC Code: 5331
MPN: 332605

5331-01-426-8007 (7D-S002099)

NIIN: 01-426-8007
In stock
NSN: 5331-01-426-8007
FSC Code: 5331
MPN: 7DS002099

5331-01-426-8008 (33-2604)

NIIN: 01-426-8008
In stock
NSN: 5331-01-426-8008
FSC Code: 5331
MPN: 332604

5331-01-430-2361 (33-2605)

NIIN: 01-430-2361
In stock
NSN: 5331-01-430-2361
FSC Code: 5331
MPN: 332605

5331-01-500-9111 (332378A1)

NIIN: 01-500-9111
In stock
NSN: 5331-01-500-9111
FSC Code: 5331
MPN: 332378A1

5331-01-500-9170 (332377A1)

NIIN: 01-500-9170
In stock
NSN: 5331-01-500-9170
FSC Code: 5331
MPN: 332377A1

5331-00-291-5606 (730224PC4)

NIIN: 00-291-5606
In stock
NSN: 5331-00-291-5606
FSC Code: 5331
MPN: 730224PC4

5331-01-425-1572 (33-2204)

NIIN: 01-425-1572
In stock
NSN: 5331-01-425-1572
FSC Code: 5331
MPN: 332204

5331-01-425-1576 (33-2204)

NIIN: 01-425-1576
In stock
NSN: 5331-01-425-1576
FSC Code: 5331
MPN: 332204

5331-01-425-1574 (33-2205)

NIIN: 01-425-1574
In stock
NSN: 5331-01-425-1574
FSC Code: 5331
MPN: 332205

5331-01-425-1573 (33-2204)

NIIN: 01-425-1573
In stock
NSN: 5331-01-425-1573
FSC Code: 5331
MPN: 332204

5331-01-425-1569 (33-2205)

NIIN: 01-425-1569
In stock
NSN: 5331-01-425-1569
FSC Code: 5331
MPN: 332205

5331-01-425-1570 (33-2205)

NIIN: 01-425-1570
In stock
NSN: 5331-01-425-1570
FSC Code: 5331
MPN: 332205

5331-01-109-5945 (730050-2)

NIIN: 01-109-5945
In stock
NSN: 5331-01-109-5945
FSC Code: 5331
MPN: 7300502

5331-01-129-0361 (730051-1)

NIIN: 01-129-0361
In stock
NSN: 5331-01-129-0361
FSC Code: 5331
MPN: 7300511

5331-01-126-0848 (72S-0183M-039)

NIIN: 01-126-0848
In stock
NSN: 5331-01-126-0848
FSC Code: 5331
MPN: 72S0183M039

5331-01-265-4919 (72S-0183M-038)

NIIN: 01-265-4919
In stock
NSN: 5331-01-265-4919
FSC Code: 5331
MPN: 72S0183M038

5331-01-422-5960 (332044-1)

NIIN: 01-422-5960
In stock
NSN: 5331-01-422-5960
FSC Code: 5331
MPN: 3320441

5331-01-008-6059 (72-G-001-M-19)

NIIN: 01-008-6059
In stock
NSN: 5331-01-008-6059
FSC Code: 5331
MPN: 72G001M19

5331-01-220-7565 (72F-B)

NIIN: 01-220-7565
In stock
NSN: 5331-01-220-7565
FSC Code: 5331
MPN: 72FB

5331-01-464-2544 (33-1936)

NIIN: 01-464-2544
In stock
NSN: 5331-01-464-2544
FSC Code: 5331
MPN: 331936

5331-01-353-5987 (33155-091)

NIIN: 01-353-5987
In stock
NSN: 5331-01-353-5987
FSC Code: 5331
MPN: 33155091

5331-01-353-5989 (3311A041)

NIIN: 01-353-5989
In stock
NSN: 5331-01-353-5989
FSC Code: 5331
MPN: 3311A041

5331-01-126-0855 (72D015024-2035)

NIIN: 01-126-0855
In stock
NSN: 5331-01-126-0855
FSC Code: 5331
MPN: 72D0150242035

5331-01-205-5039 (72B356018-2001)

NIIN: 01-205-5039
In stock
NSN: 5331-01-205-5039
FSC Code: 5331
MPN: 72B3560182001

5331-01-390-6564 (331-100-562)

NIIN: 01-390-6564
In stock
NSN: 5331-01-390-6564
FSC Code: 5331
MPN: 331100562

5331-01-037-8011 (7298-62)

NIIN: 01-037-8011
In stock
NSN: 5331-01-037-8011
FSC Code: 5331
MPN: 729862

5331-01-075-5988 (728983-4)

NIIN: 01-075-5988
In stock
NSN: 5331-01-075-5988
FSC Code: 5331
MPN: 7289834

5331-01-540-8822 (6602233)

NIIN: 01-540-8822
In stock
NSN: 5331-01-540-8822
FSC Code: 5331
MPN: 6602233

5331-01-562-9338 (33-100-000)

NIIN: 01-562-9338
In stock
NSN: 5331-01-562-9338
FSC Code: 5331
MPN: 33100000

5331-01-489-1895 (330ED284)

NIIN: 01-489-1895
In stock
NSN: 5331-01-489-1895
FSC Code: 5331
MPN: 330ED284