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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.

5331-01-300-2567 (A100SR-8)

NIIN: 01-300-2567
In stock
NSN: 5331-01-300-2567
FSC Code: 5331
MPN: A100SR8

5331-01-308-4239 (A100DA/805366-ITEM)

NIIN: 01-308-4239
In stock
NSN: 5331-01-308-4239
FSC Code: 5331
MPN: A100DA805366ITEM

5331-01-299-8206 (A100DA-ITEM)

NIIN: 01-299-8206
In stock
NSN: 5331-01-299-8206
FSC Code: 5331
MPN: A100DAITEM

5331-00-599-0725 (A10097)

NIIN: 00-599-0725
In stock
NSN: 5331-00-599-0725
FSC Code: 5331
MPN: A10097

5331-01-274-3108 (A1008X114)

NIIN: 01-274-3108
In stock
NSN: 5331-01-274-3108
FSC Code: 5331
MPN: A1008X114

5331-00-975-9553 (A100573)

NIIN: 00-975-9553
In stock
NSN: 5331-00-975-9553
FSC Code: 5331
MPN: A100573

5331-00-452-5039 (A0N097143-01)

NIIN: 00-452-5039
In stock
NSN: 5331-00-452-5039
FSC Code: 5331
MPN: A0N09714301

5331-01-324-2530 (A0JNB25025E)

NIIN: 01-324-2530
In stock
NSN: 5331-01-324-2530
FSC Code: 5331
MPN: A0JNB25025E

5331-01-316-5147 (A0JNB25025E-14-10)

NIIN: 01-316-5147
In stock
NSN: 5331-01-316-5147
FSC Code: 5331
MPN: A0JNB25025E1410

5331-00-450-5445 (A0E1-521-1913575PC36)

NIIN: 00-450-5445
In stock
NSN: 5331-00-450-5445
FSC Code: 5331
MPN: A0E15211913575PC36

5331-01-491-3624 (52D382-7)

NIIN: 01-491-3624
In stock
NSN: 5331-01-491-3624
FSC Code: 5331
MPN: 52D3827

5331-01-432-3083 (AN-4.0-52-Y)

NIIN: 01-432-3083
In stock
NSN: 5331-01-432-3083
FSC Code: 5331
MPN: AN4052Y

5331-01-489-5625 (52-B-9634-6)

NIIN: 01-489-5625
In stock
NSN: 5331-01-489-5625
FSC Code: 5331
MPN: 52B96346

5331-01-489-5624 (52-B-9634-9)

NIIN: 01-489-5624
In stock
NSN: 5331-01-489-5624
FSC Code: 5331
MPN: 52B96349

5331-01-526-2283 (853-09826-000)

NIIN: 01-526-2283
In stock
NSN: 5331-01-526-2283
FSC Code: 5331
MPN: 85309826000

5331-01-536-9310 (5-273N674-70)

NIIN: 01-536-9310
In stock
NSN: 5331-01-536-9310
FSC Code: 5331
MPN: 5273N67470

5331-00-393-4053 (A06689.040.366)

NIIN: 00-393-4053
In stock
NSN: 5331-00-393-4053
FSC Code: 5331
MPN: A06689040366

5331-01-271-4303 (A06111)

NIIN: 01-271-4303
In stock
NSN: 5331-01-271-4303
FSC Code: 5331
MPN: A06111

5331-01-298-8055 (A04.15-34)

NIIN: 01-298-8055
In stock
NSN: 5331-01-298-8055
FSC Code: 5331
MPN: A041534

5331-01-155-7431 (A0365-14)

NIIN: 01-155-7431
In stock
NSN: 5331-01-155-7431
FSC Code: 5331
MPN: A036514

5331-00-623-0366 (A028084)

NIIN: 00-623-0366
In stock
NSN: 5331-00-623-0366
FSC Code: 5331
MPN: A028084

5331-00-850-5207 (A02-326)

NIIN: 00-850-5207
In stock
NSN: 5331-00-850-5207
FSC Code: 5331
MPN: A02326

5331-00-075-3291 (A02-339VA)

NIIN: 00-075-3291
In stock
NSN: 5331-00-075-3291
FSC Code: 5331
MPN: A02339VA

5331-00-788-6039 (A02-318)

NIIN: 00-788-6039
In stock
NSN: 5331-00-788-6039
FSC Code: 5331
MPN: A02318

5331-00-551-4203 (A02-311)

NIIN: 00-551-4203
In stock
NSN: 5331-00-551-4203
FSC Code: 5331
MPN: A02311

5331-00-105-6874 (A02-312VA)

NIIN: 00-105-6874
In stock
NSN: 5331-00-105-6874
FSC Code: 5331
MPN: A02312VA

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