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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.

5331-01-278-9476 (000231986-057)

NIIN: 01-278-9476
In stock
NSN: 5331-01-278-9476
FSC Code: 5331
MPN: 000231986057

5331-01-275-1860 (000231986-058)

NIIN: 01-275-1860
In stock
NSN: 5331-01-275-1860
FSC Code: 5331
MPN: 000231986058

5331-01-285-5902 (000231986-059)

NIIN: 01-285-5902
In stock
NSN: 5331-01-285-5902
FSC Code: 5331
MPN: 000231986059

5331-01-288-9396 (000231986-062)

NIIN: 01-288-9396
In stock
NSN: 5331-01-288-9396
FSC Code: 5331
MPN: 000231986062

5331-01-292-9453 (000231986-061)

NIIN: 01-292-9453
In stock
NSN: 5331-01-292-9453
FSC Code: 5331
MPN: 000231986061

5331-01-295-1013 (000231986-067)

NIIN: 01-295-1013
In stock
NSN: 5331-01-295-1013
FSC Code: 5331
MPN: 000231986067

5331-01-328-4149 (000231986066)

NIIN: 01-328-4149
In stock
NSN: 5331-01-328-4149
FSC Code: 5331
MPN: 000231986066

5331-01-295-1012 (000231986-068)

NIIN: 01-295-1012
In stock
NSN: 5331-01-295-1012
FSC Code: 5331
MPN: 000231986068

5331-01-295-1014 (000231986-069)

NIIN: 01-295-1014
In stock
NSN: 5331-01-295-1014
FSC Code: 5331
MPN: 000231986069

5331-00-159-9575 (00023200MG)

NIIN: 00-159-9575
In stock
NSN: 5331-00-159-9575
FSC Code: 5331
MPN: 00023200MG

5331-01-302-7670 (000232-201)

NIIN: 01-302-7670
In stock
NSN: 5331-01-302-7670
FSC Code: 5331
MPN: 000232201

5331-01-288-0051 (000234883-000)

NIIN: 01-288-0051
In stock
NSN: 5331-01-288-0051
FSC Code: 5331
MPN: 000234883000

5331-00-434-9147 (000236ED)

NIIN: 00-434-9147
In stock
NSN: 5331-00-434-9147
FSC Code: 5331
MPN: 000236ED

5331-00-181-5919 (000239ED)

NIIN: 00-181-5919
In stock
NSN: 5331-00-181-5919
FSC Code: 5331
MPN: 000239ED

5331-01-331-1284 (000-23900MG)

NIIN: 01-331-1284
In stock
NSN: 5331-01-331-1284
FSC Code: 5331
MPN: 00023900MG

5331-00-355-6562 (000-24600MG)

NIIN: 00-355-6562
In stock
NSN: 5331-00-355-6562
FSC Code: 5331
MPN: 00024600MG

5331-01-126-5153 (00024-60-00-99)

NIIN: 01-126-5153
In stock
NSN: 5331-01-126-5153
FSC Code: 5331
MPN: 00024600099

5331-01-331-1285 (000-25000MG)

NIIN: 01-331-1285
In stock
NSN: 5331-01-331-1285
FSC Code: 5331
MPN: 00025000MG

5331-01-331-1286 (000-25500MG)

NIIN: 01-331-1286
In stock
NSN: 5331-01-331-1286
FSC Code: 5331
MPN: 00025500MG

5331-01-331-1287 (00025900MG)

NIIN: 01-331-1287
In stock
NSN: 5331-01-331-1287
FSC Code: 5331
MPN: 00025900MG

5331-01-014-6172 (00026200MG)

NIIN: 01-014-6172
In stock
NSN: 5331-01-014-6172
FSC Code: 5331
MPN: 00026200MG

5331-01-256-4497 (00026200NG)

NIIN: 01-256-4497
In stock
NSN: 5331-01-256-4497
FSC Code: 5331
MPN: 00026200NG

5331-01-278-3794 (000280188-004)

NIIN: 01-278-3794
In stock
NSN: 5331-01-278-3794
FSC Code: 5331
MPN: 000280188004

5331-01-284-9392 (00027-60-00-99)

NIIN: 01-284-9392
In stock
NSN: 5331-01-284-9392
FSC Code: 5331
MPN: 00027600099

5331-01-286-1668 (000280252-002)

NIIN: 01-286-1668
In stock
NSN: 5331-01-286-1668
FSC Code: 5331
MPN: 000280252002

5331-01-282-1542 (000280252)

NIIN: 01-282-1542
In stock
NSN: 5331-01-282-1542
FSC Code: 5331
MPN: 000280252

5331-01-276-1589 (000282136-001)

NIIN: 01-276-1589
In stock
NSN: 5331-01-276-1589
FSC Code: 5331
MPN: 000282136001

5331-01-288-7856 (000282133-001)

NIIN: 01-288-7856
In stock
NSN: 5331-01-288-7856
FSC Code: 5331
MPN: 000282133001

5331-01-273-9934 (00028215)

NIIN: 01-273-9934
In stock
NSN: 5331-01-273-9934
FSC Code: 5331
MPN: 00028215

5331-01-105-7263 (000282138-001)

NIIN: 01-105-7263
In stock
NSN: 5331-01-105-7263
FSC Code: 5331
MPN: 000282138001

5331-01-285-6887 (00028312)

NIIN: 01-285-6887
In stock
NSN: 5331-01-285-6887
FSC Code: 5331
MPN: 00028312

5331-01-255-1057 (00028495)

NIIN: 01-255-1057
In stock
NSN: 5331-01-255-1057
FSC Code: 5331
MPN: 00028495

5331-01-258-0092 (00028-77-00-00)

NIIN: 01-258-0092
In stock
NSN: 5331-01-258-0092
FSC Code: 5331
MPN: 00028770000

5331-01-200-7527 (00028509)

NIIN: 01-200-7527
In stock
NSN: 5331-01-200-7527
FSC Code: 5331
MPN: 00028509

5331-01-200-7526 (00028517)

NIIN: 01-200-7526
In stock
NSN: 5331-01-200-7526
FSC Code: 5331
MPN: 00028517

5331-00-579-7925 (000282951-004)

NIIN: 00-579-7925
In stock
NSN: 5331-00-579-7925
FSC Code: 5331
MPN: 000282951004

5331-01-220-3488 (00030478)

NIIN: 01-220-3488
In stock
NSN: 5331-01-220-3488
FSC Code: 5331
MPN: 00030478

5331-01-214-7717 (00030601)

NIIN: 01-214-7717
In stock
NSN: 5331-01-214-7717
FSC Code: 5331
MPN: 00030601

5331-01-063-9837 (00030767)

NIIN: 01-063-9837
In stock
NSN: 5331-01-063-9837
FSC Code: 5331
MPN: 00030767

5331-01-053-7650 (00031695N)

NIIN: 01-053-7650
In stock
NSN: 5331-01-053-7650
FSC Code: 5331
MPN: 00031695N

5331-00-492-2367 (00032-447)

NIIN: 00-492-2367
In stock
NSN: 5331-00-492-2367
FSC Code: 5331
MPN: 00032447

5331-00-322-6397 (00033-447)

NIIN: 00-322-6397
In stock
NSN: 5331-00-322-6397
FSC Code: 5331
MPN: 00033447

5331-00-166-8726 (000-344)

NIIN: 00-166-8726
In stock
NSN: 5331-00-166-8726
FSC Code: 5331
MPN: 000344

5331-00-464-7058 (000344000L)

NIIN: 00-464-7058
In stock
NSN: 5331-00-464-7058
FSC Code: 5331
MPN: 000344000L

5331-01-284-9390 (000350X0004)

NIIN: 01-284-9390
In stock
NSN: 5331-01-284-9390
FSC Code: 5331
MPN: 000350X0004

5331-00-927-9293 (0003564020)

NIIN: 00-927-9293
In stock
NSN: 5331-00-927-9293
FSC Code: 5331
MPN: 0003564020

5331-01-073-2548 (0003564050)

NIIN: 01-073-2548
In stock
NSN: 5331-01-073-2548
FSC Code: 5331
MPN: 0003564050

5331-01-188-4611 (000389)

NIIN: 01-188-4611
In stock
NSN: 5331-01-188-4611
FSC Code: 5331
MPN: 000389