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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.

5331-01-494-3104 (50050-016)

NIIN: 01-494-3104
In stock
NSN: 5331-01-494-3104
FSC Code: 5331
MPN: 50050016

5331-01-533-9638 (203-0702)

NIIN: 01-533-9638
In stock
NSN: 5331-01-533-9638
FSC Code: 5331
MPN: 2030702

5331-01-486-6485 (PRP203048-000)

NIIN: 01-486-6485
In stock
NSN: 5331-01-486-6485
FSC Code: 5331
MPN: PRP203048000

5331-01-467-3372 (20305J)

NIIN: 01-467-3372
In stock
NSN: 5331-01-467-3372
FSC Code: 5331
MPN: 20305J

5331-01-534-2305 (203-0401)

NIIN: 01-534-2305
In stock
NSN: 5331-01-534-2305
FSC Code: 5331
MPN: 2030401

5331-01-504-1540 (203-0402)

NIIN: 01-504-1540
In stock
NSN: 5331-01-504-1540
FSC Code: 5331
MPN: 2030402

5331-01-439-0082 (203-0403)

NIIN: 01-439-0082
In stock
NSN: 5331-01-439-0082
FSC Code: 5331
MPN: 2030403

5331-01-533-9618 (203-0404)

NIIN: 01-533-9618
In stock
NSN: 5331-01-533-9618
FSC Code: 5331
MPN: 2030404

5331-14-476-2084 (20300D00A3W03Q6)

NIIN: 14-476-2084
In stock
NSN: 5331-14-476-2084
FSC Code: 5331
MPN: 20300D00A3W03Q6

5331-00-527-7292 (556227-1)

NIIN: 00-527-7292
In stock
NSN: 5331-00-527-7292
FSC Code: 5331
MPN: 5562271

5331-00-429-1942 (5560029-4)

NIIN: 00-429-1942
In stock
NSN: 5331-00-429-1942
FSC Code: 5331
MPN: 55600294

5331-00-428-0520 (5560000-4)

NIIN: 00-428-0520
In stock
NSN: 5331-00-428-0520
FSC Code: 5331
MPN: 55600004

5331-00-428-0564 (5560000-3)

NIIN: 00-428-0564
In stock
NSN: 5331-00-428-0564
FSC Code: 5331
MPN: 55600003

5331-00-428-0591 (5560000-1)

NIIN: 00-428-0591
In stock
NSN: 5331-00-428-0591
FSC Code: 5331
MPN: 55600001

5331-00-763-2508 (5-557)

NIIN: 00-763-2508
In stock
NSN: 5331-00-763-2508
FSC Code: 5331
MPN: 5557

5331-01-481-4028 (AMC-202-CPR-HALF)

NIIN: 01-481-4028
In stock
NSN: 5331-01-481-4028
FSC Code: 5331
MPN: AMC202CPRHALF

5331-01-065-0633 (555104-29)

NIIN: 01-065-0633
In stock
NSN: 5331-01-065-0633
FSC Code: 5331
MPN: 55510429

5331-01-065-2575 (555104-30)

NIIN: 01-065-2575
In stock
NSN: 5331-01-065-2575
FSC Code: 5331
MPN: 55510430

5331-01-546-9428 (2-029VM835-75)

NIIN: 01-546-9428
In stock
NSN: 5331-01-546-9428
FSC Code: 5331
MPN: 2029VM83575

5331-01-570-8628 (2-029S0604-70)

NIIN: 01-570-8628
In stock
NSN: 5331-01-570-8628
FSC Code: 5331
MPN: 2029S060470

5331-01-496-7839 (2-029N497-70)

NIIN: 01-496-7839
In stock
NSN: 5331-01-496-7839
FSC Code: 5331
MPN: 2029N49770

5331-01-483-9119 (820-5295960PC34E)

NIIN: 01-483-9119
In stock
NSN: 5331-01-483-9119
FSC Code: 5331
MPN: 8205295960PC34E

5331-01-341-7458 (2-029-E-515-80)

NIIN: 01-341-7458
In stock
NSN: 5331-01-341-7458
FSC Code: 5331
MPN: 2029E51580

5331-00-431-9205 (554-1650)

NIIN: 00-431-9205
In stock
NSN: 5331-00-431-9205
FSC Code: 5331
MPN: 5541650

5331-01-449-7165 (2-027-B612-70)

NIIN: 01-449-7165
In stock
NSN: 5331-01-449-7165
FSC Code: 5331
MPN: 2027B61270

5331-01-210-4806 (554-0701)

NIIN: 01-210-4806
In stock
NSN: 5331-01-210-4806
FSC Code: 5331
MPN: 5540701

5331-01-388-9212 (2-027-V835-75)

NIIN: 01-388-9212
In stock
NSN: 5331-01-388-9212
FSC Code: 5331
MPN: 2027V83575

5331-01-359-8777 (2-027N702-90)

NIIN: 01-359-8777
In stock
NSN: 5331-01-359-8777
FSC Code: 5331
MPN: 2027N70290

5331-01-454-0952 (B413-0415)

NIIN: 01-454-0952
In stock
NSN: 5331-01-454-0952
FSC Code: 5331
MPN: B4130415

5331-99-780-2511 (202-753-4470)

NIIN: 99-780-2511
In stock
NSN: 5331-99-780-2511
FSC Code: 5331
MPN: 2027534470

5331-25-150-2690 (HS1423S1.1)

NIIN: 25-150-2690
In stock
NSN: 5331-25-150-2690
FSC Code: 5331
MPN: HS1423S11

5331-25-150-2871 (HS1312S54.2)

NIIN: 25-150-2871
In stock
NSN: 5331-25-150-2871
FSC Code: 5331
MPN: HS1312S542

5331-25-150-2692 (HS1423S1.1)

NIIN: 25-150-2692
In stock
NSN: 5331-25-150-2692
FSC Code: 5331
MPN: HS1423S11

5331-25-150-2611 (HS1312S54.2)

NIIN: 25-150-2611
In stock
NSN: 5331-25-150-2611
FSC Code: 5331
MPN: HS1312S542

5331-01-364-9382 (M3CH915B34EO16EO36)

NIIN: 01-364-9382
In stock
NSN: 5331-01-364-9382
FSC Code: 5331
MPN: M3CH915B34EO16EO36

5331-01-527-5756 (2-026L1120-70)

NIIN: 01-527-5756
In stock
NSN: 5331-01-527-5756
FSC Code: 5331
MPN: 2026L112070

5331-01-437-8908 (2026A)

NIIN: 01-437-8908
In stock
NSN: 5331-01-437-8908
FSC Code: 5331
MPN: 2026A

5331-01-454-0937 (B413-0276)

NIIN: 01-454-0937
In stock
NSN: 5331-01-454-0937
FSC Code: 5331
MPN: B4130276

5331-01-454-0942 (202-640-4480)

NIIN: 01-454-0942
In stock
NSN: 5331-01-454-0942
FSC Code: 5331
MPN: 2026404480

5331-01-216-1236 (55357-9)

NIIN: 01-216-1236
In stock
NSN: 5331-01-216-1236
FSC Code: 5331
MPN: 553579

5331-01-216-1235 (55357-7)

NIIN: 01-216-1235
In stock
NSN: 5331-01-216-1235
FSC Code: 5331
MPN: 553577

5331-01-032-6924 (5532-346-5IN)

NIIN: 01-032-6924
In stock
NSN: 5331-01-032-6924
FSC Code: 5331
MPN: 55323465IN

5331-01-454-0949 (B413-0291)

NIIN: 01-454-0949
In stock
NSN: 5331-01-454-0949
FSC Code: 5331
MPN: B4130291

5331-01-454-0935 (B413-0221)

NIIN: 01-454-0935
In stock
NSN: 5331-01-454-0935
FSC Code: 5331
MPN: B4130221

5331-01-454-0934 (B413-0161)

NIIN: 01-454-0934
In stock
NSN: 5331-01-454-0934
FSC Code: 5331
MPN: B4130161

5331-01-454-0945 (B413-0111)

NIIN: 01-454-0945
In stock
NSN: 5331-01-454-0945
FSC Code: 5331
MPN: B4130111

5331-01-454-0947 (B413-0131)

NIIN: 01-454-0947
In stock
NSN: 5331-01-454-0947
FSC Code: 5331
MPN: B4130131

5331-01-453-9090 (B413-0091)

NIIN: 01-453-9090
In stock
NSN: 5331-01-453-9090
FSC Code: 5331
MPN: B4130091