Skip to content

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.

5331-01-031-8226 (2507294-87)

NIIN: 01-031-8226
In stock
NSN: 5331-01-031-8226
FSC Code: 5331
MPN: 250729487

5331-01-031-1338 (2507294-83)

NIIN: 01-031-1338
In stock
NSN: 5331-01-031-1338
FSC Code: 5331
MPN: 250729483

5331-01-492-6173 (028-13129-000)

NIIN: 01-492-6173
In stock
NSN: 5331-01-492-6173
FSC Code: 5331
MPN: 02813129000

5331-01-468-3597 (028-13101-000)

NIIN: 01-468-3597
In stock
NSN: 5331-01-468-3597
FSC Code: 5331
MPN: 02813101000

5331-01-468-3629 (028-13062-000)

NIIN: 01-468-3629
In stock
NSN: 5331-01-468-3629
FSC Code: 5331
MPN: 02813062000

5331-01-528-1591 (028-13142-000)

NIIN: 01-528-1591
In stock
NSN: 5331-01-528-1591
FSC Code: 5331
MPN: 02813142000

5331-01-352-1162 (028-13131-000)

NIIN: 01-352-1162
In stock
NSN: 5331-01-352-1162
FSC Code: 5331
MPN: 02813131000

5331-01-484-8563 (476-95197-000)

NIIN: 01-484-8563
In stock
NSN: 5331-01-484-8563
FSC Code: 5331
MPN: 47695197000

5331-01-468-3674 (028-12996-000)

NIIN: 01-468-3674
In stock
NSN: 5331-01-468-3674
FSC Code: 5331
MPN: 02812996000

5331-01-484-9681 (476-95197-000)

NIIN: 01-484-9681
In stock
NSN: 5331-01-484-9681
FSC Code: 5331
MPN: 47695197000

5331-01-468-3622 (028-13106-000)

NIIN: 01-468-3622
In stock
NSN: 5331-01-468-3622
FSC Code: 5331
MPN: 02813106000

5331-01-468-3598 (028-13103-000)

NIIN: 01-468-3598
In stock
NSN: 5331-01-468-3598
FSC Code: 5331
MPN: 02813103000

5331-01-468-3574 (028-13104-000)

NIIN: 01-468-3574
In stock
NSN: 5331-01-468-3574
FSC Code: 5331
MPN: 02813104000

5331-01-519-7755 (028-13136-000)

NIIN: 01-519-7755
In stock
NSN: 5331-01-519-7755
FSC Code: 5331
MPN: 02813136000

5331-01-519-0417 (028-13137-000)

NIIN: 01-519-0417
In stock
NSN: 5331-01-519-0417
FSC Code: 5331
MPN: 02813137000

5331-01-031-8257 (2507294-51)

NIIN: 01-031-8257
In stock
NSN: 5331-01-031-8257
FSC Code: 5331
MPN: 250729451

5331-01-528-1632 (028-13130-000)

NIIN: 01-528-1632
In stock
NSN: 5331-01-528-1632
FSC Code: 5331
MPN: 02813130000

5331-01-519-3165 (028-13458-000)

NIIN: 01-519-3165
In stock
NSN: 5331-01-519-3165
FSC Code: 5331
MPN: 02813458000

5331-01-492-6175 (028-13123-000)

NIIN: 01-492-6175
In stock
NSN: 5331-01-492-6175
FSC Code: 5331
MPN: 02813123000

5331-01-519-0364 (028-13461-000)

NIIN: 01-519-0364
In stock
NSN: 5331-01-519-0364
FSC Code: 5331
MPN: 02813461000

5331-01-492-6178 (028-13163-000)

NIIN: 01-492-6178
In stock
NSN: 5331-01-492-6178
FSC Code: 5331
MPN: 02813163000

5331-01-519-0372 (028-13134-000)

NIIN: 01-519-0372
In stock
NSN: 5331-01-519-0372
FSC Code: 5331
MPN: 02813134000

5331-01-031-8213 (2507294-57)

NIIN: 01-031-8213
In stock
NSN: 5331-01-031-8213
FSC Code: 5331
MPN: 250729457

5331-01-492-6169 (028-13166-000)

NIIN: 01-492-6169
In stock
NSN: 5331-01-492-6169
FSC Code: 5331
MPN: 02813166000

5331-01-492-6158 (028-13499-000)

NIIN: 01-492-6158
In stock
NSN: 5331-01-492-6158
FSC Code: 5331
MPN: 02813499000

5331-01-482-6122 (028-13184-000)

NIIN: 01-482-6122
In stock
NSN: 5331-01-482-6122
FSC Code: 5331
MPN: 02813184000

5331-01-484-2613 (028-13500-000)

NIIN: 01-484-2613
In stock
NSN: 5331-01-484-2613
FSC Code: 5331
MPN: 02813500000

5331-01-499-4153 (028-13516-000)

NIIN: 01-499-4153
In stock
NSN: 5331-01-499-4153
FSC Code: 5331
MPN: 02813516000

5331-01-468-7842 (028-13481)

NIIN: 01-468-7842
In stock
NSN: 5331-01-468-7842
FSC Code: 5331
MPN: 02813481

5331-01-572-6741 (028-13144-000)

NIIN: 01-572-6741
In stock
NSN: 5331-01-572-6741
FSC Code: 5331
MPN: 02813144000

5331-01-492-9214 (028-13491-000)

NIIN: 01-492-9214
In stock
NSN: 5331-01-492-9214
FSC Code: 5331
MPN: 02813491000

5331-01-470-0931 (028-13160)

NIIN: 01-470-0931
In stock
NSN: 5331-01-470-0931
FSC Code: 5331
MPN: 02813160

5331-01-029-3674 (2507294-50)

NIIN: 01-029-3674
In stock
NSN: 5331-01-029-3674
FSC Code: 5331
MPN: 250729450

5331-01-484-2637 (028-13175-000)

NIIN: 01-484-2637
In stock
NSN: 5331-01-484-2637
FSC Code: 5331
MPN: 02813175000

5331-01-483-3649 (028-13520-000)

NIIN: 01-483-3649
In stock
NSN: 5331-01-483-3649
FSC Code: 5331
MPN: 02813520000

5331-01-572-4349 (028-13513-000)

NIIN: 01-572-4349
In stock
NSN: 5331-01-572-4349
FSC Code: 5331
MPN: 02813513000

5331-01-482-6126 (028-13527-000)

NIIN: 01-482-6126
In stock
NSN: 5331-01-482-6126
FSC Code: 5331
MPN: 02813527000

5331-01-492-6164 (028-13523-000)

NIIN: 01-492-6164
In stock
NSN: 5331-01-492-6164
FSC Code: 5331
MPN: 02813523000

5331-01-482-6117 (028-13528-000)

NIIN: 01-482-6117
In stock
NSN: 5331-01-482-6117
FSC Code: 5331
MPN: 02813528000

5331-01-486-3683 (028-13541-000)

NIIN: 01-486-3683
In stock
NSN: 5331-01-486-3683
FSC Code: 5331
MPN: 02813541000

5331-01-505-3101 (376-92572-000)

NIIN: 01-505-3101
In stock
NSN: 5331-01-505-3101
FSC Code: 5331
MPN: 37692572000

5331-01-499-3620 (364-48833-000-)

NIIN: 01-499-3620
In stock
NSN: 5331-01-499-3620
FSC Code: 5331
MPN: 36448833000

5331-01-561-7733 (028-13849-000)

NIIN: 01-561-7733
In stock
NSN: 5331-01-561-7733
FSC Code: 5331
MPN: 02813849000

5331-01-526-5398 (028-13519-000)

NIIN: 01-526-5398
In stock
NSN: 5331-01-526-5398
FSC Code: 5331
MPN: 02813519000

5331-01-499-5333 (028-13536-000)

NIIN: 01-499-5333
In stock
NSN: 5331-01-499-5333
FSC Code: 5331
MPN: 02813536000

5331-01-505-3099 (376-92572-000)

NIIN: 01-505-3099
In stock
NSN: 5331-01-505-3099
FSC Code: 5331
MPN: 37692572000

5331-01-551-7796 (028-15285-000)

NIIN: 01-551-7796
In stock
NSN: 5331-01-551-7796
FSC Code: 5331
MPN: 02815285000

5331-01-526-5402 (028-14548-000)

NIIN: 01-526-5402
In stock
NSN: 5331-01-526-5402
FSC Code: 5331
MPN: 02814548000