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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.

5331-00-945-4378 (99-2973-223)

NIIN: 00-945-4378
In stock
NSN: 5331-00-945-4378
FSC Code: 5331
MPN: 992973223

5331-00-939-9567 (99-2973-241)

NIIN: 00-939-9567
In stock
NSN: 5331-00-939-9567
FSC Code: 5331
MPN: 992973241

5331-00-155-4689 (99-2973-6)

NIIN: 00-155-4689
In stock
NSN: 5331-00-155-4689
FSC Code: 5331
MPN: 9929736

5331-00-925-7831 (99-2936-9)

NIIN: 00-925-7831
In stock
NSN: 5331-00-925-7831
FSC Code: 5331
MPN: 9929369

5331-01-214-7716 (9-926-102976)

NIIN: 01-214-7716
In stock
NSN: 5331-01-214-7716
FSC Code: 5331
MPN: 9926102976

5331-01-304-2367 (9-926-102908)

NIIN: 01-304-2367
In stock
NSN: 5331-01-304-2367
FSC Code: 5331
MPN: 9926102908

5331-01-236-9186 (99-24B)

NIIN: 01-236-9186
In stock
NSN: 5331-01-236-9186
FSC Code: 5331
MPN: 9924B

5331-01-420-7487 (517133PC28)

NIIN: 01-420-7487
In stock
NSN: 5331-01-420-7487
FSC Code: 5331
MPN: 517133PC28

5331-01-420-7392 (517133PC10)

NIIN: 01-420-7392
In stock
NSN: 5331-01-420-7392
FSC Code: 5331
MPN: 517133PC10

5331-01-513-9178 (517-0007-01)

NIIN: 01-513-9178
In stock
NSN: 5331-01-513-9178
FSC Code: 5331
MPN: 517000701

5331-00-641-0095 (99-1457)

NIIN: 00-641-0095
In stock
NSN: 5331-00-641-0095
FSC Code: 5331
MPN: 991457

5331-00-471-7721 (99-1450279)

NIIN: 00-471-7721
In stock
NSN: 5331-00-471-7721
FSC Code: 5331
MPN: 991450279

5331-00-471-7722 (99-1450280)

NIIN: 00-471-7722
In stock
NSN: 5331-00-471-7722
FSC Code: 5331
MPN: 991450280

5331-00-471-7723 (99-1450281)

NIIN: 00-471-7723
In stock
NSN: 5331-00-471-7723
FSC Code: 5331
MPN: 991450281

5331-01-132-4073 (99136-52-15)

NIIN: 01-132-4073
In stock
NSN: 5331-01-132-4073
FSC Code: 5331
MPN: 991365215

5331-01-469-2405 (5-168-N674-70)

NIIN: 01-469-2405
In stock
NSN: 5331-01-469-2405
FSC Code: 5331
MPN: 5168N67470

5331-00-469-6840 (99136-12-15)

NIIN: 00-469-6840
In stock
NSN: 5331-00-469-6840
FSC Code: 5331
MPN: 991361215

5331-01-016-4876 (99136-11-6)

NIIN: 01-016-4876
In stock
NSN: 5331-01-016-4876
FSC Code: 5331
MPN: 99136116

5331-01-248-5444 (99136-11-15)

NIIN: 01-248-5444
In stock
NSN: 5331-01-248-5444
FSC Code: 5331
MPN: 991361115

5331-00-515-4030 (99-1298)

NIIN: 00-515-4030
In stock
NSN: 5331-00-515-4030
FSC Code: 5331
MPN: 991298

5331-01-520-7330 (5-166N0299-50)

NIIN: 01-520-7330
In stock
NSN: 5331-01-520-7330
FSC Code: 5331
MPN: 5166N029950

5331-01-548-1474 (M83248/1-912CP)

NIIN: 01-548-1474
In stock
NSN: 5331-01-548-1474
FSC Code: 5331
MPN: M832481912CP

5331-01-425-6269 (516-5343916-F46)

NIIN: 01-425-6269
In stock
NSN: 5331-01-425-6269
FSC Code: 5331
MPN: 5165343916F46

5331-01-422-9795 (516-5343916-F45)

NIIN: 01-422-9795
In stock
NSN: 5331-01-422-9795
FSC Code: 5331
MPN: 5165343916F45

5331-01-299-8202 (99087-P020)

NIIN: 01-299-8202
In stock
NSN: 5331-01-299-8202
FSC Code: 5331
MPN: 99087P020

5331-00-425-9063 (990404-912ES)

NIIN: 00-425-9063
In stock
NSN: 5331-00-425-9063
FSC Code: 5331
MPN: 990404912ES

5331-00-425-9124 (990404-908ES)

NIIN: 00-425-9124
In stock
NSN: 5331-00-425-9124
FSC Code: 5331
MPN: 990404908ES

5331-01-314-1211 (99-015-000)

NIIN: 01-314-1211
In stock
NSN: 5331-01-314-1211
FSC Code: 5331
MPN: 99015000

5331-00-808-2326 (9901-26-122)

NIIN: 00-808-2326
In stock
NSN: 5331-00-808-2326
FSC Code: 5331
MPN: 990126122

5331-00-808-2332 (9901-26-137)

NIIN: 00-808-2332
In stock
NSN: 5331-00-808-2332
FSC Code: 5331
MPN: 990126137

5331-00-808-2341 (9901-26-120)

NIIN: 00-808-2341
In stock
NSN: 5331-00-808-2341
FSC Code: 5331
MPN: 990126120

5331-01-238-3213 (990-105-003)

NIIN: 01-238-3213
In stock
NSN: 5331-01-238-3213
FSC Code: 5331
MPN: 990105003

5331-00-868-5554 (99009-32)

NIIN: 00-868-5554
In stock
NSN: 5331-00-868-5554
FSC Code: 5331
MPN: 9900932

5331-01-235-4327 (9900591-1340)

NIIN: 01-235-4327
In stock
NSN: 5331-01-235-4327
FSC Code: 5331
MPN: 99005911340

5331-01-235-4325 (9900591-1240)

NIIN: 01-235-4325
In stock
NSN: 5331-01-235-4325
FSC Code: 5331
MPN: 99005911240

5331-01-492-8429 (515-AV-MMA-030)

NIIN: 01-492-8429
In stock
NSN: 5331-01-492-8429
FSC Code: 5331
MPN: 515AVMMA030

5331-01-463-5212 (5-159-S604-70)

NIIN: 01-463-5212
In stock
NSN: 5331-01-463-5212
FSC Code: 5331
MPN: 5159S60470

5331-01-438-6632 (5-157L0946-60)

NIIN: 01-438-6632
In stock
NSN: 5331-01-438-6632
FSC Code: 5331
MPN: 5157L094660

5331-01-508-8281 (515-7067398-F128)

NIIN: 01-508-8281
In stock
NSN: 5331-01-508-8281
FSC Code: 5331
MPN: 5157067398F128

5331-01-508-8284 (515-7383634-F124)

NIIN: 01-508-8284
In stock
NSN: 5331-01-508-8284
FSC Code: 5331
MPN: 5157383634F124

5331-01-508-8277 (515-7383634-F112)

NIIN: 01-508-8277
In stock
NSN: 5331-01-508-8277
FSC Code: 5331
MPN: 5157383634F112

5331-01-497-3268 (5-157)

NIIN: 01-497-3268
In stock
NSN: 5331-01-497-3268
FSC Code: 5331
MPN: 5157

5331-01-391-1080 (5-156L0946-60)

NIIN: 01-391-1080
In stock
NSN: 5331-01-391-1080
FSC Code: 5331
MPN: 5156L094660

5331-01-506-6707 (ARP568-212MILG22050GR1)

NIIN: 01-506-6707
In stock
NSN: 5331-01-506-6707
FSC Code: 5331
MPN: ARP568212MILG22050GR1

5331-01-508-8275 (515-7383634-F126)

NIIN: 01-508-8275
In stock
NSN: 5331-01-508-8275
FSC Code: 5331
MPN: 5157383634F126

5331-01-278-6710 (990-017-006)

NIIN: 01-278-6710
In stock
NSN: 5331-01-278-6710
FSC Code: 5331
MPN: 990017006

5331-01-278-6711 (990-002-006)

NIIN: 01-278-6711
In stock
NSN: 5331-01-278-6711
FSC Code: 5331
MPN: 990002006

5331-00-753-2154 (98M71-124PC43)

NIIN: 00-753-2154
In stock
NSN: 5331-00-753-2154
FSC Code: 5331
MPN: 98M71124PC43