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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.

5331-01-169-5769 (A137R017-9)

NIIN: 01-169-5769
In stock
NSN: 5331-01-169-5769
FSC Code: 5331
MPN: A137R0179

5331-01-412-5379 (533001PAF1404)

NIIN: 01-412-5379
In stock
NSN: 5331-01-412-5379
FSC Code: 5331
MPN: 533001PAF1404

5331-01-356-8264 (533001PAF1414)

NIIN: 01-356-8264
In stock
NSN: 5331-01-356-8264
FSC Code: 5331
MPN: 533001PAF1414

5331-01-412-5382 (533001PAF1411)

NIIN: 01-412-5382
In stock
NSN: 5331-01-412-5382
FSC Code: 5331
MPN: 533001PAF1411

5331-01-171-2322 (A137R015-9)

NIIN: 01-171-2322
In stock
NSN: 5331-01-171-2322
FSC Code: 5331
MPN: A137R0159

5331-01-360-2733 (533001PAF1303)

NIIN: 01-360-2733
In stock
NSN: 5331-01-360-2733
FSC Code: 5331
MPN: 533001PAF1303

5331-01-171-0424 (A137R013-9)

NIIN: 01-171-0424
In stock
NSN: 5331-01-171-0424
FSC Code: 5331
MPN: A137R0139

5331-01-171-2321 (A137R011-9)

NIIN: 01-171-2321
In stock
NSN: 5331-01-171-2321
FSC Code: 5331
MPN: A137R0119

5331-01-171-2320 (A137R004)

NIIN: 01-171-2320
In stock
NSN: 5331-01-171-2320
FSC Code: 5331
MPN: A137R004

5331-01-171-9876 (A137R003-9)

NIIN: 01-171-9876
In stock
NSN: 5331-01-171-9876
FSC Code: 5331
MPN: A137R0039

5331-01-544-6460 (532-R08A)

NIIN: 01-544-6460
In stock
NSN: 5331-01-544-6460
FSC Code: 5331
MPN: 532R08A

5331-00-765-2674 (A1341N)

NIIN: 00-765-2674
In stock
NSN: 5331-00-765-2674
FSC Code: 5331
MPN: A1341N

5331-01-008-6541 (A133125)

NIIN: 01-008-6541
In stock
NSN: 5331-01-008-6541
FSC Code: 5331
MPN: A133125

5331-01-560-2984 (5327-62)

NIIN: 01-560-2984
In stock
NSN: 5331-01-560-2984
FSC Code: 5331
MPN: 532762

5331-01-009-7022 (A132123)

NIIN: 01-009-7022
In stock
NSN: 5331-01-009-7022
FSC Code: 5331
MPN: A132123

5331-01-560-2996 (5326-62)

NIIN: 01-560-2996
In stock
NSN: 5331-01-560-2996
FSC Code: 5331
MPN: 532662

5331-01-469-2402 (5-321-N674-70)

NIIN: 01-469-2402
In stock
NSN: 5331-01-469-2402
FSC Code: 5331
MPN: 5321N67470

5331-01-478-2490 (5-320-V884-75)

NIIN: 01-478-2490
In stock
NSN: 5331-01-478-2490
FSC Code: 5331
MPN: 5320V88475

5331-01-571-2197 (B0612-70-5-320)

NIIN: 01-571-2197
In stock
NSN: 5331-01-571-2197
FSC Code: 5331
MPN: B0612705320

5331-01-177-8191 (A-12001)

NIIN: 01-177-8191
In stock
NSN: 5331-01-177-8191
FSC Code: 5331
MPN: A12001

5331-01-264-4173 (A11537-4)

NIIN: 01-264-4173
In stock
NSN: 5331-01-264-4173
FSC Code: 5331
MPN: A115374

5331-01-171-6306 (A11507)

NIIN: 01-171-6306
In stock
NSN: 5331-01-171-6306
FSC Code: 5331
MPN: A11507

5331-00-082-1110 (A-11443)

NIIN: 00-082-1110
In stock
NSN: 5331-00-082-1110
FSC Code: 5331
MPN: A11443

5331-00-118-9094 (A114)

NIIN: 00-118-9094
In stock
NSN: 5331-00-118-9094
FSC Code: 5331
MPN: A114

5331-00-308-6554 (A1134)

NIIN: 00-308-6554
In stock
NSN: 5331-00-308-6554
FSC Code: 5331
MPN: A1134

5331-00-069-9108 (A-113)

NIIN: 00-069-9108
In stock
NSN: 5331-00-069-9108
FSC Code: 5331
MPN: A113

5331-00-069-9129 (A-111)

NIIN: 00-069-9129
In stock
NSN: 5331-00-069-9129
FSC Code: 5331
MPN: A111

5331-00-959-6780 (A1110-172PC7)

NIIN: 00-959-6780
In stock
NSN: 5331-00-959-6780
FSC Code: 5331
MPN: A1110172PC7

5331-01-519-7132 (53100178-1)

NIIN: 01-519-7132
In stock
NSN: 5331-01-519-7132
FSC Code: 5331
MPN: 531001781

5331-12-344-2618 (530000 700429530000)

NIIN: 12-344-2618
In stock
NSN: 5331-12-344-2618
FSC Code: 5331
MPN: 530000700429530000

5331-01-440-8094 (5-309L1218-80)

NIIN: 01-440-8094
In stock
NSN: 5331-01-440-8094
FSC Code: 5331
MPN: 5309L121880

5331-01-185-8542 (A1074.476)

NIIN: 01-185-8542
In stock
NSN: 5331-01-185-8542
FSC Code: 5331
MPN: A1074476

5331-01-144-6173 (A-10696)

NIIN: 01-144-6173
In stock
NSN: 5331-01-144-6173
FSC Code: 5331
MPN: A10696

5331-01-472-5023 (53021-01018)

NIIN: 01-472-5023
In stock
NSN: 5331-01-472-5023
FSC Code: 5331
MPN: 5302101018

5331-01-274-3107 (A1022X21)

NIIN: 01-274-3107
In stock
NSN: 5331-01-274-3107
FSC Code: 5331
MPN: A1022X21

5331-01-285-4787 (A1022X011)

NIIN: 01-285-4787
In stock
NSN: 5331-01-285-4787
FSC Code: 5331
MPN: A1022X011

5331-01-172-1855 (A1022X10)

NIIN: 01-172-1855
In stock
NSN: 5331-01-172-1855
FSC Code: 5331
MPN: A1022X10

5331-01-464-2409 (530-10010-1)

NIIN: 01-464-2409
In stock
NSN: 5331-01-464-2409
FSC Code: 5331
MPN: 530100101

5331-01-464-2368 (530-10040-1)

NIIN: 01-464-2368
In stock
NSN: 5331-01-464-2368
FSC Code: 5331
MPN: 530100401

5331-01-111-9279 (A1019)

NIIN: 01-111-9279
In stock
NSN: 5331-01-111-9279
FSC Code: 5331
MPN: A1019

5331-01-471-6888 (53-0049)

NIIN: 01-471-6888
In stock
NSN: 5331-01-471-6888
FSC Code: 5331
MPN: 530049

5331-01-299-8207 (A100SR-8)

NIIN: 01-299-8207
In stock
NSN: 5331-01-299-8207
FSC Code: 5331
MPN: A100SR8

5331-01-308-4240 (A100SR-8/805367-ITEM)

NIIN: 01-308-4240
In stock
NSN: 5331-01-308-4240
FSC Code: 5331
MPN: A100SR8805367ITEM

5331-01-300-2566 (A100DA-ITEM)

NIIN: 01-300-2566
In stock
NSN: 5331-01-300-2566
FSC Code: 5331
MPN: A100DAITEM

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