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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.

5331-01-464-8530 (107.034.703.024)

NIIN: 01-464-8530
In stock
NSN: 5331-01-464-8530
FSC Code: 5331
MPN: 107034703024

5331-01-306-6043 (3-20N-9)

NIIN: 01-306-6043
In stock
NSN: 5331-01-306-6043
FSC Code: 5331
MPN: 320N9

5331-00-182-3192 (3-20N168-8)

NIIN: 00-182-3192
In stock
NSN: 5331-00-182-3192
FSC Code: 5331
MPN: 320N1688

5331-00-400-5495 (3-20N183-9)

NIIN: 00-400-5495
In stock
NSN: 5331-00-400-5495
FSC Code: 5331
MPN: 320N1839

5331-00-420-4700 (3-20E515-8)

NIIN: 00-420-4700
In stock
NSN: 5331-00-420-4700
FSC Code: 5331
MPN: 320E5158

5331-01-007-4906 (3-20C147-7)

NIIN: 01-007-4906
In stock
NSN: 5331-01-007-4906
FSC Code: 5331
MPN: 320C1477

5331-00-533-3972 (320-8A)

NIIN: 00-533-3972
In stock
NSN: 5331-00-533-3972
FSC Code: 5331
MPN: 3208A

5331-01-431-7862 (10683-468)

NIIN: 01-431-7862
In stock
NSN: 5331-01-431-7862
FSC Code: 5331
MPN: 10683468

5331-01-528-7983 (10683-475)

NIIN: 01-528-7983
In stock
NSN: 5331-01-528-7983
FSC Code: 5331
MPN: 10683475

5331-01-431-7861 (10683-491)

NIIN: 01-431-7861
In stock
NSN: 5331-01-431-7861
FSC Code: 5331
MPN: 10683491

5331-01-431-7865 (10683-424)

NIIN: 01-431-7865
In stock
NSN: 5331-01-431-7865
FSC Code: 5331
MPN: 10683424

5331-01-431-7864 (10683-426)

NIIN: 01-431-7864
In stock
NSN: 5331-01-431-7864
FSC Code: 5331
MPN: 10683426

5331-01-431-7860 (10683-471)

NIIN: 01-431-7860
In stock
NSN: 5331-01-431-7860
FSC Code: 5331
MPN: 10683471

5331-01-528-7775 (10683-527)

NIIN: 01-528-7775
In stock
NSN: 5331-01-528-7775
FSC Code: 5331
MPN: 10683527

5331-01-431-7863 (10683-484)

NIIN: 01-431-7863
In stock
NSN: 5331-01-431-7863
FSC Code: 5331
MPN: 10683484

5331-01-521-5599 (10683-607)

NIIN: 01-521-5599
In stock
NSN: 5331-01-521-5599
FSC Code: 5331
MPN: 10683607

5331-01-431-7866 (10683-65)

NIIN: 01-431-7866
In stock
NSN: 5331-01-431-7866
FSC Code: 5331
MPN: 1068365

5331-01-353-9394 (990013-832)

NIIN: 01-353-9394
In stock
NSN: 5331-01-353-9394
FSC Code: 5331
MPN: 990013832

5331-00-167-2597 (320-71)

NIIN: 00-167-2597
In stock
NSN: 5331-00-167-2597
FSC Code: 5331
MPN: 32071

5331-01-348-1734 (106722CACP)

NIIN: 01-348-1734
In stock
NSN: 5331-01-348-1734
FSC Code: 5331
MPN: 106722CACP

5331-01-249-4058 (320-6382-000)

NIIN: 01-249-4058
In stock
NSN: 5331-01-249-4058
FSC Code: 5331
MPN: 3206382000

5331-01-312-0166 (32058-49)

NIIN: 01-312-0166
In stock
NSN: 5331-01-312-0166
FSC Code: 5331
MPN: 3205849

5331-01-534-0119 (10661096-001)

NIIN: 01-534-0119
In stock
NSN: 5331-01-534-0119
FSC Code: 5331
MPN: 10661096001

5331-01-536-9151 (10661096-002)

NIIN: 01-536-9151
In stock
NSN: 5331-01-536-9151
FSC Code: 5331
MPN: 10661096002

5331-01-115-2559 (32-03614)

NIIN: 01-115-2559
In stock
NSN: 5331-01-115-2559
FSC Code: 5331
MPN: 3203614

5331-01-026-0630 (32-036-14)

NIIN: 01-026-0630
In stock
NSN: 5331-01-026-0630
FSC Code: 5331
MPN: 3203614

5331-01-205-3173 (31-S-094-0562)

NIIN: 01-205-3173
In stock
NSN: 5331-01-205-3173
FSC Code: 5331
MPN: 31S0940562

5331-00-297-9956 (31N606PC45)

NIIN: 00-297-9956
In stock
NSN: 5331-00-297-9956
FSC Code: 5331
MPN: 31N606PC45

5331-00-814-2347 (31FCS22PC145)

NIIN: 00-814-2347
In stock
NSN: 5331-00-814-2347
FSC Code: 5331
MPN: 31FCS22PC145

5331-01-438-6766 (1063NSC4IN-PC15)

NIIN: 01-438-6766
In stock
NSN: 5331-01-438-6766
FSC Code: 5331
MPN: 1063NSC4INPC15

5331-00-559-5539 (31D104)

NIIN: 00-559-5539
In stock
NSN: 5331-00-559-5539
FSC Code: 5331
MPN: 31D104

5331-01-439-5355 (19-04-W533-1285)

NIIN: 01-439-5355
In stock
NSN: 5331-01-439-5355
FSC Code: 5331
MPN: 1904W5331285

5331-01-257-6695 (319-40)

NIIN: 01-257-6695
In stock
NSN: 5331-01-257-6695
FSC Code: 5331
MPN: 31940

5331-01-208-0297 (3193-037)

NIIN: 01-208-0297
In stock
NSN: 5331-01-208-0297
FSC Code: 5331
MPN: 3193037

5331-00-291-7293 (318S9)

NIIN: 00-291-7293
In stock
NSN: 5331-00-291-7293
FSC Code: 5331
MPN: 318S9

5331-00-544-2926 (318S37)

NIIN: 00-544-2926
In stock
NSN: 5331-00-544-2926
FSC Code: 5331
MPN: 318S37

5331-00-544-2925 (318S3)

NIIN: 00-544-2925
In stock
NSN: 5331-00-544-2925
FSC Code: 5331
MPN: 318S3

5331-00-684-5620 (318S5)

NIIN: 00-684-5620
In stock
NSN: 5331-00-684-5620
FSC Code: 5331
MPN: 318S5

5331-01-162-3718 (318S34)

NIIN: 01-162-3718
In stock
NSN: 5331-01-162-3718
FSC Code: 5331
MPN: 318S34

5331-00-934-9604 (318-S-38)

NIIN: 00-934-9604
In stock
NSN: 5331-00-934-9604
FSC Code: 5331
MPN: 318S38

5331-01-452-5345 (ORAR00339-N7237)

NIIN: 01-452-5345
In stock
NSN: 5331-01-452-5345
FSC Code: 5331
MPN: ORAR00339N7237

5331-01-115-8109 (3187158-020)

NIIN: 01-115-8109
In stock
NSN: 5331-01-115-8109
FSC Code: 5331
MPN: 3187158020

5331-00-925-4364 (318610PC65)

NIIN: 00-925-4364
In stock
NSN: 5331-00-925-4364
FSC Code: 5331
MPN: 318610PC65

5331-00-298-5862 (3184-9)

NIIN: 00-298-5862
In stock
NSN: 5331-00-298-5862
FSC Code: 5331
MPN: 31849

5331-01-022-1987 (31832A)

NIIN: 01-022-1987
In stock
NSN: 5331-01-022-1987
FSC Code: 5331
MPN: 31832A

5331-01-437-5464 (16-258-060)

NIIN: 01-437-5464
In stock
NSN: 5331-01-437-5464
FSC Code: 5331
MPN: 16258060

5331-01-437-5454 (16-258-050)

NIIN: 01-437-5454
In stock
NSN: 5331-01-437-5454
FSC Code: 5331
MPN: 16258050

5331-01-435-5226 (10-6000S015-ST)

NIIN: 01-435-5226
In stock
NSN: 5331-01-435-5226
FSC Code: 5331
MPN: 106000S015ST