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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.

5331-01-475-4896 (70-0301)

NIIN: 01-475-4896
In stock
NSN: 5331-01-475-4896
FSC Code: 5331
MPN: 700301

5331-01-397-5948 (N998-6401-A-002)

NIIN: 01-397-5948
In stock
NSN: 5331-01-397-5948
FSC Code: 5331
MPN: N9986401A002

5331-01-361-4786 (GBV-F2-60-0020-08)

NIIN: 01-361-4786
In stock
NSN: 5331-01-361-4786
FSC Code: 5331
MPN: GBVF260002008

5331-01-545-4261 (N-999-6108-B-001ITEM89A)

NIIN: 01-545-4261
In stock
NSN: 5331-01-545-4261
FSC Code: 5331
MPN: N9996108B001ITEM89A

5331-01-425-2407 (999-1110-A-01)

NIIN: 01-425-2407
In stock
NSN: 5331-01-425-2407
FSC Code: 5331
MPN: 9991110A01

5331-01-428-2106 (999-1107-C-02)

NIIN: 01-428-2106
In stock
NSN: 5331-01-428-2106
FSC Code: 5331
MPN: 9991107C02

5331-01-426-1200 (700-249-375)

NIIN: 01-426-1200
In stock
NSN: 5331-01-426-1200
FSC Code: 5331
MPN: 700249375

5331-01-545-4269 (N-999-6108-B-001ITEM89D)

NIIN: 01-545-4269
In stock
NSN: 5331-01-545-4269
FSC Code: 5331
MPN: N9996108B001ITEM89D

5331-01-425-6384 (700-200-3-357)

NIIN: 01-425-6384
In stock
NSN: 5331-01-425-6384
FSC Code: 5331
MPN: 7002003357

5331-01-505-6663 (700-200-3-433)

NIIN: 01-505-6663
In stock
NSN: 5331-01-505-6663
FSC Code: 5331
MPN: 7002003433

5331-01-533-1507 (N-999-6041-A-005)

NIIN: 01-533-1507
In stock
NSN: 5331-01-533-1507
FSC Code: 5331
MPN: N9996041A005

5331-01-125-4197 (DC7508)

NIIN: 01-125-4197
In stock
NSN: 5331-01-125-4197
FSC Code: 5331
MPN: DC7508

5331-01-425-6385 (700-124-357)

NIIN: 01-425-6385
In stock
NSN: 5331-01-425-6385
FSC Code: 5331
MPN: 700124357

5331-01-426-0009 (999-2003-0-03)

NIIN: 01-426-0009
In stock
NSN: 5331-01-426-0009
FSC Code: 5331
MPN: 9992003003

5331-01-421-9956 (85.32X3.53)

NIIN: 01-421-9956
In stock
NSN: 5331-01-421-9956
FSC Code: 5331
MPN: 8532X353

5331-01-426-0008 (700-105-3-357)

NIIN: 01-426-0008
In stock
NSN: 5331-01-426-0008
FSC Code: 5331
MPN: 7001053357

5331-01-527-8549 (7000-519-5)

NIIN: 01-527-8549
In stock
NSN: 5331-01-527-8549
FSC Code: 5331
MPN: 70005195

5331-01-527-8550 (7000-519-6)

NIIN: 01-527-8550
In stock
NSN: 5331-01-527-8550
FSC Code: 5331
MPN: 70005196

5331-01-420-8770 (999-1107-D-01)

NIIN: 01-420-8770
In stock
NSN: 5331-01-420-8770
FSC Code: 5331
MPN: 9991107D01

5331-01-425-2408 (999-1110-A-01)

NIIN: 01-425-2408
In stock
NSN: 5331-01-425-2408
FSC Code: 5331
MPN: 9991110A01

5331-01-361-3189 (700-024-355C)

NIIN: 01-361-3189
In stock
NSN: 5331-01-361-3189
FSC Code: 5331
MPN: 700024355C

5331-01-426-1204 (700-021-375C)

NIIN: 01-426-1204
In stock
NSN: 5331-01-426-1204
FSC Code: 5331
MPN: 700021375C

5331-01-557-4158 (700-022-357C)

NIIN: 01-557-4158
In stock
NSN: 5331-01-557-4158
FSC Code: 5331
MPN: 700022357C

5331-01-564-9427 (999-1110-H-02)

NIIN: 01-564-9427
In stock
NSN: 5331-01-564-9427
FSC Code: 5331
MPN: 9991110H02

5331-01-456-3794 (700-019-355C)

NIIN: 01-456-3794
In stock
NSN: 5331-01-456-3794
FSC Code: 5331
MPN: 700019355C

5331-01-542-1761 (999-246B-0-05)

NIIN: 01-542-1761
In stock
NSN: 5331-01-542-1761
FSC Code: 5331
MPN: 999246B005

5331-01-361-3190 (700-012-355C)

NIIN: 01-361-3190
In stock
NSN: 5331-01-361-3190
FSC Code: 5331
MPN: 700012355C

5331-01-422-4385 (N-999-6082-A-007)

NIIN: 01-422-4385
In stock
NSN: 5331-01-422-4385
FSC Code: 5331
MPN: N9996082A007

5331-01-549-7493 (70001-030)

NIIN: 01-549-7493
In stock
NSN: 5331-01-549-7493
FSC Code: 5331
MPN: 70001030

5331-01-439-9853 (N-999-6037-A-003)

NIIN: 01-439-9853
In stock
NSN: 5331-01-439-9853
FSC Code: 5331
MPN: N9996037A003

5331-01-549-7491 (70001-036)

NIIN: 01-549-7491
In stock
NSN: 5331-01-549-7491
FSC Code: 5331
MPN: 70001036

5331-01-549-7492 (70001-037)

NIIN: 01-549-7492
In stock
NSN: 5331-01-549-7492
FSC Code: 5331
MPN: 70001037

5331-01-528-7760 (LL-H58-3888)

NIIN: 01-528-7760
In stock
NSN: 5331-01-528-7760
FSC Code: 5331
MPN: LLH583888

5331-01-555-9006 (7.5MM)

NIIN: 01-555-9006
In stock
NSN: 5331-01-555-9006
FSC Code: 5331
MPN: 75MM

5331-14-478-7925 (7.1X1.6-4248)

NIIN: 14-478-7925
In stock
NSN: 5331-14-478-7925
FSC Code: 5331
MPN: 71X164248

5331-01-076-0197 (DASH204)

NIIN: 01-076-0197
In stock
NSN: 5331-01-076-0197
FSC Code: 5331
MPN: DASH204

5331-12-325-5598 (700429006002)

NIIN: 12-325-5598
In stock
NSN: 5331-12-325-5598
FSC Code: 5331
MPN: 700429006002

5331-01-076-0198 (DASH109)

NIIN: 01-076-0198
In stock
NSN: 5331-01-076-0198
FSC Code: 5331
MPN: DASH109

5331-12-331-5835 (700429006003)

NIIN: 12-331-5835
In stock
NSN: 5331-12-331-5835
FSC Code: 5331
MPN: 700429006003

5331-01-352-9337 (6V9769)

NIIN: 01-352-9337
In stock
NSN: 5331-01-352-9337
FSC Code: 5331
MPN: 6V9769

5331-01-474-2184 (6V-8978)

NIIN: 01-474-2184
In stock
NSN: 5331-01-474-2184
FSC Code: 5331
MPN: 6V8978

5331-01-513-9992 (6V8938)

NIIN: 01-513-9992
In stock
NSN: 5331-01-513-9992
FSC Code: 5331
MPN: 6V8938

5331-01-527-9155 (6V8253)

NIIN: 01-527-9155
In stock
NSN: 5331-01-527-9155
FSC Code: 5331
MPN: 6V8253

5331-01-483-9434 (6V-8002)

NIIN: 01-483-9434
In stock
NSN: 5331-01-483-9434
FSC Code: 5331
MPN: 6V8002

5331-01-485-8206 (6V-8399)

NIIN: 01-485-8206
In stock
NSN: 5331-01-485-8206
FSC Code: 5331
MPN: 6V8399

5331-01-486-0780 (6V7661)

NIIN: 01-486-0780
In stock
NSN: 5331-01-486-0780
FSC Code: 5331
MPN: 6V7661

5331-01-514-6490 (6V-7658)

NIIN: 01-514-6490
In stock
NSN: 5331-01-514-6490
FSC Code: 5331
MPN: 6V7658

5331-01-474-2403 (6V-8351)

NIIN: 01-474-2403
In stock
NSN: 5331-01-474-2403
FSC Code: 5331
MPN: 6V8351