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.

5331-01-440-7384 (1C8538-X0022)

NIIN: 01-440-7384
In stock
NSN: 5331-01-440-7384
FSC Code: 5331
MPN: 1C8538X0022

5331-01-545-8964 (1C401-60)

NIIN: 01-545-8964
In stock
NSN: 5331-01-545-8964
FSC Code: 5331
MPN: 1C40160

5331-01-545-8963 (81X-8-64C8)

NIIN: 01-545-8963
In stock
NSN: 5331-01-545-8963
FSC Code: 5331
MPN: 81X864C8

5331-01-546-6394 (2509A00804)

NIIN: 01-546-6394
In stock
NSN: 5331-01-546-6394
FSC Code: 5331
MPN: 2509A00804

5331-01-544-2470 (1C401-36)

NIIN: 01-544-2470
In stock
NSN: 5331-01-544-2470
FSC Code: 5331
MPN: 1C40136

5331-01-544-2469 (WB200A01600BRNL)

NIIN: 01-544-2469
In stock
NSN: 5331-01-544-2469
FSC Code: 5331
MPN: WB200A01600BRNL

5331-01-544-0490 (31-5X1-8-64C8)

NIIN: 01-544-0490
In stock
NSN: 5331-01-544-0490
FSC Code: 5331
MPN: 315X1864C8

5331-01-546-3449 (2509A00954)

NIIN: 01-546-3449
In stock
NSN: 5331-01-546-3449
FSC Code: 5331
MPN: 2509A00954

5331-01-544-2472 (8X1-8-64C8)

NIIN: 01-544-2472
In stock
NSN: 5331-01-544-2472
FSC Code: 5331
MPN: 8X1864C8

5331-01-546-3448 (2510105202)

NIIN: 01-546-3448
In stock
NSN: 5331-01-546-3448
FSC Code: 5331
MPN: 2510105202

5331-01-544-1251 (1C401-35)

NIIN: 01-544-1251
In stock
NSN: 5331-01-544-1251
FSC Code: 5331
MPN: 1C40135

5331-01-544-1249 (WB250A01250BRNL)

NIIN: 01-544-1249
In stock
NSN: 5331-01-544-1249
FSC Code: 5331
MPN: WB250A01250BRNL

5331-01-548-2708 (1BG-65)

NIIN: 01-548-2708
In stock
NSN: 5331-01-548-2708
FSC Code: 5331
MPN: 1BG65

5331-01-529-9013 (1BG70)

NIIN: 01-529-9013
In stock
NSN: 5331-01-529-9013
FSC Code: 5331
MPN: 1BG70

5331-01-390-6758 (1B885506992)

NIIN: 01-390-6758
In stock
NSN: 5331-01-390-6758
FSC Code: 5331
MPN: 1B885506992

5331-01-266-3292 (5-330N304-75)

NIIN: 01-266-3292
In stock
NSN: 5331-01-266-3292
FSC Code: 5331
MPN: 5330N30475

5331-00-171-8003 (5330L23-000)

NIIN: 00-171-8003
In stock
NSN: 5331-00-171-8003
FSC Code: 5331
MPN: 5330L23000

5331-01-387-9487 (1B5776)

NIIN: 01-387-9487
In stock
NSN: 5331-01-387-9487
FSC Code: 5331
MPN: 1B5776

5331-00-297-5329 (5330H21-001-1)

NIIN: 00-297-5329
In stock
NSN: 5331-00-297-5329
FSC Code: 5331
MPN: 5330H210011

5331-01-119-3122 (5-330-89-00)

NIIN: 01-119-3122
In stock
NSN: 5331-01-119-3122
FSC Code: 5331
MPN: 53308900

5331-00-468-5065 (5330-99-193)

NIIN: 00-468-5065
In stock
NSN: 5331-00-468-5065
FSC Code: 5331
MPN: 533099193

5331-00-811-3484 (5330-811-3484)

NIIN: 00-811-3484
In stock
NSN: 5331-00-811-3484
FSC Code: 5331
MPN: 53308113484

5331-00-297-7021 (5330-228-4)

NIIN: 00-297-7021
In stock
NSN: 5331-00-297-7021
FSC Code: 5331
MPN: 53302284

5331-01-137-8772 (5330-400-03-08)

NIIN: 01-137-8772
In stock
NSN: 5331-01-137-8772
FSC Code: 5331
MPN: 53304000308

5331-00-141-4234 (5330-228-3)

NIIN: 00-141-4234
In stock
NSN: 5331-00-141-4234
FSC Code: 5331
MPN: 53302283

5331-00-297-6445 (5330-231-32)

NIIN: 00-297-6445
In stock
NSN: 5331-00-297-6445
FSC Code: 5331
MPN: 533023132

5331-00-141-4228 (5330-228-12)

NIIN: 00-141-4228
In stock
NSN: 5331-00-141-4228
FSC Code: 5331
MPN: 533022812

5331-00-171-8620 (5330-228-22)

NIIN: 00-171-8620
In stock
NSN: 5331-00-171-8620
FSC Code: 5331
MPN: 533022822

5331-00-171-6077 (5330-228-16)

NIIN: 00-171-6077
In stock
NSN: 5331-00-171-6077
FSC Code: 5331
MPN: 533022816

5331-00-297-9946 (5330-227-6)

NIIN: 00-297-9946
In stock
NSN: 5331-00-297-9946
FSC Code: 5331
MPN: 53302276

5331-00-576-4501 (5330-225-2)

NIIN: 00-576-4501
In stock
NSN: 5331-00-576-4501
FSC Code: 5331
MPN: 53302252

5331-00-141-4230 (5330-228-13)

NIIN: 00-141-4230
In stock
NSN: 5331-00-141-4230
FSC Code: 5331
MPN: 533022813

5331-00-291-5605 (5330-223-13)

NIIN: 00-291-5605
In stock
NSN: 5331-00-291-5605
FSC Code: 5331
MPN: 533022313

5331-00-292-0766 (5330-227-3)

NIIN: 00-292-0766
In stock
NSN: 5331-00-292-0766
FSC Code: 5331
MPN: 53302273

5331-00-297-9959 (5330-227-31)

NIIN: 00-297-9959
In stock
NSN: 5331-00-297-9959
FSC Code: 5331
MPN: 533022731

5331-00-141-4238 (5330-228-1)

NIIN: 00-141-4238
In stock
NSN: 5331-00-141-4238
FSC Code: 5331
MPN: 53302281

5331-00-291-9198 (5330-227-15)

NIIN: 00-291-9198
In stock
NSN: 5331-00-291-9198
FSC Code: 5331
MPN: 533022715

5331-00-576-4503 (5330-225-1)

NIIN: 00-576-4503
In stock
NSN: 5331-00-576-4503
FSC Code: 5331
MPN: 53302251

5331-00-291-3834 (5330-223-12)

NIIN: 00-291-3834
In stock
NSN: 5331-00-291-3834
FSC Code: 5331
MPN: 533022312

5331-00-188-8141 (5330-217-14)

NIIN: 00-188-8141
In stock
NSN: 5331-00-188-8141
FSC Code: 5331
MPN: 533021714

5331-00-292-9901 (5330-217-47)

NIIN: 00-292-9901
In stock
NSN: 5331-00-292-9901
FSC Code: 5331
MPN: 533021747

5331-00-292-0639 (5330-221-30)

NIIN: 00-292-0639
In stock
NSN: 5331-00-292-0639
FSC Code: 5331
MPN: 533022130

5331-00-171-9981 (5330-221-10)

NIIN: 00-171-9981
In stock
NSN: 5331-00-171-9981
FSC Code: 5331
MPN: 533022110

5331-00-292-0606 (5330-219-24)

NIIN: 00-292-0606
In stock
NSN: 5331-00-292-0606
FSC Code: 5331
MPN: 533021924

5331-00-297-3611 (5330-221-21)

NIIN: 00-297-3611
In stock
NSN: 5331-00-297-3611
FSC Code: 5331
MPN: 533022121

5331-00-292-9902 (5330-217-4)

NIIN: 00-292-9902
In stock
NSN: 5331-00-292-9902
FSC Code: 5331
MPN: 53302174

5331-00-292-0605 (5330-212-11)

NIIN: 00-292-0605
In stock
NSN: 5331-00-292-0605
FSC Code: 5331
MPN: 533021211

5331-00-292-9912 (5330-217-35)

NIIN: 00-292-9912
In stock
NSN: 5331-00-292-9912
FSC Code: 5331
MPN: 533021735