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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.

5331-00-997-9022 (A02-319)

NIIN: 00-997-9022
In stock
NSN: 5331-00-997-9022
FSC Code: 5331
MPN: A02319

5331-00-451-8895 (A02-314)

NIIN: 00-451-8895
In stock
NSN: 5331-00-451-8895
FSC Code: 5331
MPN: A02314

5331-00-068-8182 (A02-302)

NIIN: 00-068-8182
In stock
NSN: 5331-00-068-8182
FSC Code: 5331
MPN: A02302

5331-00-989-5493 (A02-304)

NIIN: 00-989-5493
In stock
NSN: 5331-00-989-5493
FSC Code: 5331
MPN: A02304

5331-00-867-3455 (A02-306)

NIIN: 00-867-3455
In stock
NSN: 5331-00-867-3455
FSC Code: 5331
MPN: A02306

5331-01-174-2674 (A-0220)

NIIN: 01-174-2674
In stock
NSN: 5331-01-174-2674
FSC Code: 5331
MPN: A0220

5331-00-120-2061 (A01-701VA)

NIIN: 00-120-2061
In stock
NSN: 5331-00-120-2061
FSC Code: 5331
MPN: A01701VA

5331-00-850-5208 (A01-725)

NIIN: 00-850-5208
In stock
NSN: 5331-00-850-5208
FSC Code: 5331
MPN: A01725

5331-00-842-8163 (A01-721)

NIIN: 00-842-8163
In stock
NSN: 5331-00-842-8163
FSC Code: 5331
MPN: A01721

5331-00-069-9103 (A016)

NIIN: 00-069-9103
In stock
NSN: 5331-00-069-9103
FSC Code: 5331
MPN: A016

5331-00-003-6904 (A015-114858)

NIIN: 00-003-6904
In stock
NSN: 5331-00-003-6904
FSC Code: 5331
MPN: A015114858

5331-00-436-1914 (A010)

NIIN: 00-436-1914
In stock
NSN: 5331-00-436-1914
FSC Code: 5331
MPN: A010

5331-01-225-0801 (A-008-0004-53)

NIIN: 01-225-0801
In stock
NSN: 5331-01-225-0801
FSC Code: 5331
MPN: A008000453

5331-01-225-0800 (A-008-0005-53)

NIIN: 01-225-0800
In stock
NSN: 5331-01-225-0800
FSC Code: 5331
MPN: A008000553

5331-01-451-4644 (52561A209)

NIIN: 01-451-4644
In stock
NSN: 5331-01-451-4644
FSC Code: 5331
MPN: 52561A209

5331-00-869-1202 (A009)

NIIN: 00-869-1202
In stock
NSN: 5331-00-869-1202
FSC Code: 5331
MPN: A009

5331-01-411-6079 (52561A215)

NIIN: 01-411-6079
In stock
NSN: 5331-01-411-6079
FSC Code: 5331
MPN: 52561A215

5331-01-368-0473 (52567A123)

NIIN: 01-368-0473
In stock
NSN: 5331-01-368-0473
FSC Code: 5331
MPN: 52567A123

5331-01-218-3222 (A-008-0006-53)

NIIN: 01-218-3222
In stock
NSN: 5331-01-218-3222
FSC Code: 5331
MPN: A008000653

5331-01-431-3094 (52561A337)

NIIN: 01-431-3094
In stock
NSN: 5331-01-431-3094
FSC Code: 5331
MPN: 52561A337

5331-01-342-9025 (PRP334-1197)

NIIN: 01-342-9025
In stock
NSN: 5331-01-342-9025
FSC Code: 5331
MPN: PRP3341197

5331-01-466-8093 (52560X329)

NIIN: 01-466-8093
In stock
NSN: 5331-01-466-8093
FSC Code: 5331
MPN: 52560X329

5331-01-411-6078 (52561A440)

NIIN: 01-411-6078
In stock
NSN: 5331-01-411-6078
FSC Code: 5331
MPN: 52561A440

5331-01-572-5982 (52561A216)

NIIN: 01-572-5982
In stock
NSN: 5331-01-572-5982
FSC Code: 5331
MPN: 52561A216

5331-01-431-3099 (52560A459)

NIIN: 01-431-3099
In stock
NSN: 5331-01-431-3099
FSC Code: 5331
MPN: 52560A459

5331-01-536-9321 (5-254N674-70)

NIIN: 01-536-9321
In stock
NSN: 5331-01-536-9321
FSC Code: 5331
MPN: 5254N67470

5331-01-232-1485 (A,S7259)

NIIN: 01-232-1485
In stock
NSN: 5331-01-232-1485
FSC Code: 5331
MPN: AS7259

5331-00-828-3521 (A)

NIIN: 00-828-3521
In stock
NSN: 5331-00-828-3521
FSC Code: 5331
MPN: A

5331-01-364-4923 (52500-172154)

NIIN: 01-364-4923
In stock
NSN: 5331-01-364-4923
FSC Code: 5331
MPN: 52500172154

5331-01-364-4922 (52500-172429)

NIIN: 01-364-4922
In stock
NSN: 5331-01-364-4922
FSC Code: 5331
MPN: 52500172429

5331-01-364-4924 (52500-172159)

NIIN: 01-364-4924
In stock
NSN: 5331-01-364-4924
FSC Code: 5331
MPN: 52500172159

5331-01-415-1376 (52-49483-00)

NIIN: 01-415-1376
In stock
NSN: 5331-01-415-1376
FSC Code: 5331
MPN: 524948300

5331-01-457-8781 (52-49610-00)

NIIN: 01-457-8781
In stock
NSN: 5331-01-457-8781
FSC Code: 5331
MPN: 524961000

5331-01-121-0612 (9S2082)

NIIN: 01-121-0612
In stock
NSN: 5331-01-121-0612
FSC Code: 5331
MPN: 9S2082

5331-01-224-3696 (9N1617)

NIIN: 01-224-3696
In stock
NSN: 5331-01-224-3696
FSC Code: 5331
MPN: 9N1617

5331-01-223-6772 (9N1608)

NIIN: 01-223-6772
In stock
NSN: 5331-01-223-6772
FSC Code: 5331
MPN: 9N1608

5331-01-079-7128 (9N1749)

NIIN: 01-079-7128
In stock
NSN: 5331-01-079-7128
FSC Code: 5331
MPN: 9N1749

5331-01-223-6771 (9N1519)

NIIN: 01-223-6771
In stock
NSN: 5331-01-223-6771
FSC Code: 5331
MPN: 9N1519

5331-01-177-8185 (9N1520)

NIIN: 01-177-8185
In stock
NSN: 5331-01-177-8185
FSC Code: 5331
MPN: 9N1520

5331-01-377-5197 (9-970-100052)

NIIN: 01-377-5197
In stock
NSN: 5331-01-377-5197
FSC Code: 5331
MPN: 9970100052

5331-00-869-6566 (9M-9647)

NIIN: 00-869-6566
In stock
NSN: 5331-00-869-6566
FSC Code: 5331
MPN: 9M9647

5331-00-924-0137 (9M9545)

NIIN: 00-924-0137
In stock
NSN: 5331-00-924-0137
FSC Code: 5331
MPN: 9M9545

5331-01-568-9015 (5233T71)

NIIN: 01-568-9015
In stock
NSN: 5331-01-568-9015
FSC Code: 5331
MPN: 5233T71

5331-01-410-8446 (5231-0034)

NIIN: 01-410-8446
In stock
NSN: 5331-01-410-8446
FSC Code: 5331
MPN: 52310034

5331-01-410-8451 (5231-0028)

NIIN: 01-410-8451
In stock
NSN: 5331-01-410-8451
FSC Code: 5331
MPN: 52310028

5331-01-410-8455 (5231-0027)

NIIN: 01-410-8455
In stock
NSN: 5331-01-410-8455
FSC Code: 5331
MPN: 52310027

5331-01-410-8449 (5231-0036)

NIIN: 01-410-8449
In stock
NSN: 5331-01-410-8449
FSC Code: 5331
MPN: 52310036

5331-01-102-7978 (9M6097)

NIIN: 01-102-7978
In stock
NSN: 5331-01-102-7978
FSC Code: 5331
MPN: 9M6097