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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.

5331-01-454-9979 (LSD-8504-7-2.5IN)

NIIN: 01-454-9979
In stock
NSN: 5331-01-454-9979
FSC Code: 5331
MPN: LSD8504725IN

5331-01-544-9813 (LSA57-56J4G)

NIIN: 01-544-9813
In stock
NSN: 5331-01-544-9813
FSC Code: 5331
MPN: LSA5756J4G

5331-01-384-9851 (LS14800-122)

NIIN: 01-384-9851
In stock
NSN: 5331-01-384-9851
FSC Code: 5331
MPN: LS14800122

5331-01-472-6549 (LS14619-910)

NIIN: 01-472-6549
In stock
NSN: 5331-01-472-6549
FSC Code: 5331
MPN: LS14619910

5331-01-517-2046 (LS10116-4)

NIIN: 01-517-2046
In stock
NSN: 5331-01-517-2046
FSC Code: 5331
MPN: LS101164

5331-01-539-6615 (LS10115-132)

NIIN: 01-539-6615
In stock
NSN: 5331-01-539-6615
FSC Code: 5331
MPN: LS10115132

5331-01-517-4091 (LS10115-017)

NIIN: 01-517-4091
In stock
NSN: 5331-01-517-4091
FSC Code: 5331
MPN: LS10115017

5331-01-476-7379 (LRP-96-679)

NIIN: 01-476-7379
In stock
NSN: 5331-01-476-7379
FSC Code: 5331
MPN: LRP96679

5331-01-490-4457 (LR55403)

NIIN: 01-490-4457
In stock
NSN: 5331-01-490-4457
FSC Code: 5331
MPN: LR55403

5331-99-490-4438 (LP697-0625-30)

NIIN: 99-490-4438
In stock
NSN: 5331-99-490-4438
FSC Code: 5331
MPN: LP697062530

5331-01-524-7841 (S-57153-1275-10-A-T)

NIIN: 01-524-7841
In stock
NSN: 5331-01-524-7841
FSC Code: 5331
MPN: S57153127510AT

5331-01-524-8085 (S-57253-0420-10-A-T)

NIIN: 01-524-8085
In stock
NSN: 5331-01-524-8085
FSC Code: 5331
MPN: S57253042010AT

5331-01-500-4508 (LP11804-0)

NIIN: 01-500-4508
In stock
NSN: 5331-01-500-4508
FSC Code: 5331
MPN: LP118040

5331-01-375-3083 (MIL-R-83248/1)

NIIN: 01-375-3083
In stock
NSN: 5331-01-375-3083
FSC Code: 5331
MPN: MILR832481

5331-01-446-0355 (LL-H46-1444)

NIIN: 01-446-0355
In stock
NSN: 5331-01-446-0355
FSC Code: 5331
MPN: LLH461444

5331-01-347-1945 (LG75)

NIIN: 01-347-1945
In stock
NSN: 5331-01-347-1945
FSC Code: 5331
MPN: LG75

5331-01-456-4677 (LFT-908B)

NIIN: 01-456-4677
In stock
NSN: 5331-01-456-4677
FSC Code: 5331
MPN: LFT908B

5331-01-456-4445 (LF-1205B)

NIIN: 01-456-4445
In stock
NSN: 5331-01-456-4445
FSC Code: 5331
MPN: LF1205B

5331-01-523-9947 (LF-1015-90)

NIIN: 01-523-9947
In stock
NSN: 5331-01-523-9947
FSC Code: 5331
MPN: LF101590

5331-01-509-1255 (LAM-120)

NIIN: 01-509-1255
In stock
NSN: 5331-01-509-1255
FSC Code: 5331
MPN: LAM120

5331-01-520-5931 (LAM-018)

NIIN: 01-520-5931
In stock
NSN: 5331-01-520-5931
FSC Code: 5331
MPN: LAM018

5331-01-531-8735 (LA-KAUAA-000119)

NIIN: 01-531-8735
In stock
NSN: 5331-01-531-8735
FSC Code: 5331
MPN: LAKAUAA000119

5331-01-531-8431 (LA-AM1626-5)

NIIN: 01-531-8431
In stock
NSN: 5331-01-531-8431
FSC Code: 5331
MPN: LAAM16265

5331-01-430-2363 (L9817AF)

NIIN: 01-430-2363
In stock
NSN: 5331-01-430-2363
FSC Code: 5331
MPN: L9817AF

5331-01-430-2368 (L9817FS)

NIIN: 01-430-2368
In stock
NSN: 5331-01-430-2368
FSC Code: 5331
MPN: L9817FS

5331-01-430-2364 (L9817AS)

NIIN: 01-430-2364
In stock
NSN: 5331-01-430-2364
FSC Code: 5331
MPN: L9817AS

5331-01-430-2365 (L9817AE)

NIIN: 01-430-2365
In stock
NSN: 5331-01-430-2365
FSC Code: 5331
MPN: L9817AE

5331-01-429-5024 (L5-57)

NIIN: 01-429-5024
In stock
NSN: 5331-01-429-5024
FSC Code: 5331
MPN: L557

5331-01-429-4830 (L5-58)

NIIN: 01-429-4830
In stock
NSN: 5331-01-429-4830
FSC Code: 5331
MPN: L558

5331-01-374-9192 (L56246)

NIIN: 01-374-9192
In stock
NSN: 5331-01-374-9192
FSC Code: 5331
MPN: L56246

5331-01-382-4331 (L56244)

NIIN: 01-382-4331
In stock
NSN: 5331-01-382-4331
FSC Code: 5331
MPN: L56244

5331-01-432-9325 (L5451)

NIIN: 01-432-9325
In stock
NSN: 5331-01-432-9325
FSC Code: 5331
MPN: L5451

5331-01-533-6089 (L40306)

NIIN: 01-533-6089
In stock
NSN: 5331-01-533-6089
FSC Code: 5331
MPN: L40306

5331-01-533-5743 (L40317)

NIIN: 01-533-5743
In stock
NSN: 5331-01-533-5743
FSC Code: 5331
MPN: L40317

5331-01-478-0900 (L1223M08610140)

NIIN: 01-478-0900
In stock
NSN: 5331-01-478-0900
FSC Code: 5331
MPN: L1223M08610140

5331-01-478-2353 (L1223M13450131)

NIIN: 01-478-2353
In stock
NSN: 5331-01-478-2353
FSC Code: 5331
MPN: L1223M13450131

5331-01-374-9193 (L116346)

NIIN: 01-374-9193
In stock
NSN: 5331-01-374-9193
FSC Code: 5331
MPN: L116346

5331-01-491-0037 (M25988/1-432)

NIIN: 01-491-0037
In stock
NSN: 5331-01-491-0037
FSC Code: 5331
MPN: M259881432

5331-01-554-3235 (L1120)

NIIN: 01-554-3235
In stock
NSN: 5331-01-554-3235
FSC Code: 5331
MPN: L1120

5331-01-490-0717 (MIL-DTL-25988/1)

NIIN: 01-490-0717
In stock
NSN: 5331-01-490-0717
FSC Code: 5331
MPN: MILDTL259881

5331-01-554-3233 (L1120)

NIIN: 01-554-3233
In stock
NSN: 5331-01-554-3233
FSC Code: 5331
MPN: L1120

5331-01-554-3234 (L1120)

NIIN: 01-554-3234
In stock
NSN: 5331-01-554-3234
FSC Code: 5331
MPN: L1120

5331-01-547-8340 (L1120)

NIIN: 01-547-8340
In stock
NSN: 5331-01-547-8340
FSC Code: 5331
MPN: L1120

5331-01-554-3236 (L1120)

NIIN: 01-554-3236
In stock
NSN: 5331-01-554-3236
FSC Code: 5331
MPN: L1120

5331-01-568-1676 (L0960)

NIIN: 01-568-1676
In stock
NSN: 5331-01-568-1676
FSC Code: 5331
MPN: L0960

5331-01-474-6578 (KX406-23)

NIIN: 01-474-6578
In stock
NSN: 5331-01-474-6578
FSC Code: 5331
MPN: KX40623

5331-01-552-2530 (KV10108)

NIIN: 01-552-2530
In stock
NSN: 5331-01-552-2530
FSC Code: 5331
MPN: KV10108

5331-01-381-2107 (K-TRL-9C-12N)

NIIN: 01-381-2107
In stock
NSN: 5331-01-381-2107
FSC Code: 5331
MPN: KTRL9C12N