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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.

5331-01-268-1248 (LL-HX5-4412)

NIIN: 01-268-1248
In stock
NSN: 5331-01-268-1248
FSC Code: 5331
MPN: LLHX54412

5331-01-271-5957 (LL-HX5-4421)

NIIN: 01-271-5957
In stock
NSN: 5331-01-271-5957
FSC Code: 5331
MPN: LLHX54421

5331-01-271-2532 (LL-HX5-4419)

NIIN: 01-271-2532
In stock
NSN: 5331-01-271-2532
FSC Code: 5331
MPN: LLHX54419

5331-01-264-4234 (LL-HX5-2816)

NIIN: 01-264-4234
In stock
NSN: 5331-01-264-4234
FSC Code: 5331
MPN: LLHX52816

5331-01-271-2294 (LL-HX5-0930)

NIIN: 01-271-2294
In stock
NSN: 5331-01-271-2294
FSC Code: 5331
MPN: LLHX50930

5331-01-255-1061 (LL-HX5-1450)

NIIN: 01-255-1061
In stock
NSN: 5331-01-255-1061
FSC Code: 5331
MPN: LLHX51450

5331-01-254-1380 (LL-HX5-1481)

NIIN: 01-254-1380
In stock
NSN: 5331-01-254-1380
FSC Code: 5331
MPN: LLHX51481

5331-01-245-7216 (LL-HX4-7446)

NIIN: 01-245-7216
In stock
NSN: 5331-01-245-7216
FSC Code: 5331
MPN: LLHX47446

5331-01-240-6003 (LL-HX4-7318)

NIIN: 01-240-6003
In stock
NSN: 5331-01-240-6003
FSC Code: 5331
MPN: LLHX47318

5331-01-235-1686 (LL-HX4-5753)

NIIN: 01-235-1686
In stock
NSN: 5331-01-235-1686
FSC Code: 5331
MPN: LLHX45753

5331-01-258-4642 (LL-HX4-9536)

NIIN: 01-258-4642
In stock
NSN: 5331-01-258-4642
FSC Code: 5331
MPN: LLHX49536

5331-01-241-0803 (LL-HX4-7315)

NIIN: 01-241-0803
In stock
NSN: 5331-01-241-0803
FSC Code: 5331
MPN: LLHX47315

5331-01-240-6002 (LL-HX4-7317)

NIIN: 01-240-6002
In stock
NSN: 5331-01-240-6002
FSC Code: 5331
MPN: LLHX47317

5331-01-237-2688 (LL-HX4-5302)

NIIN: 01-237-2688
In stock
NSN: 5331-01-237-2688
FSC Code: 5331
MPN: LLHX45302

5331-01-241-6421 (LL-HX4-7103)

NIIN: 01-241-6421
In stock
NSN: 5331-01-241-6421
FSC Code: 5331
MPN: LLHX47103

5331-01-234-9437 (LL-HX4-3804)

NIIN: 01-234-9437
In stock
NSN: 5331-01-234-9437
FSC Code: 5331
MPN: LLHX43804

5331-01-229-4114 (LL-HX4-4875)

NIIN: 01-229-4114
In stock
NSN: 5331-01-229-4114
FSC Code: 5331
MPN: LLHX44875

5331-01-249-0491 (LL-HX3-9252)

NIIN: 01-249-0491
In stock
NSN: 5331-01-249-0491
FSC Code: 5331
MPN: LLHX39252

5331-01-237-5598 (LL-HX4-2954)

NIIN: 01-237-5598
In stock
NSN: 5331-01-237-5598
FSC Code: 5331
MPN: LLHX42954

5331-01-296-5361 (LL-HKG-0539)

NIIN: 01-296-5361
In stock
NSN: 5331-01-296-5361
FSC Code: 5331
MPN: LLHKG0539

5331-00-630-4335 (LL701PC6)

NIIN: 00-630-4335
In stock
NSN: 5331-00-630-4335
FSC Code: 5331
MPN: LL701PC6

5331-00-630-4334 (LL701PC7)

NIIN: 00-630-4334
In stock
NSN: 5331-00-630-4334
FSC Code: 5331
MPN: LL701PC7

5331-00-651-4505 (LL299-35)

NIIN: 00-651-4505
In stock
NSN: 5331-00-651-4505
FSC Code: 5331
MPN: LL29935

5331-00-702-6784 (LL2865-11)

NIIN: 00-702-6784
In stock
NSN: 5331-00-702-6784
FSC Code: 5331
MPN: LL286511

5331-01-283-3544 (LL-1353)

NIIN: 01-283-3544
In stock
NSN: 5331-01-283-3544
FSC Code: 5331
MPN: LL1353

5331-01-277-0166 (LHD8434)

NIIN: 01-277-0166
In stock
NSN: 5331-01-277-0166
FSC Code: 5331
MPN: LHD8434

5331-01-287-2927 (LHD-8429)

NIIN: 01-287-2927
In stock
NSN: 5331-01-287-2927
FSC Code: 5331
MPN: LHD8429

5331-01-287-0379 (LHD-8426)

NIIN: 01-287-0379
In stock
NSN: 5331-01-287-0379
FSC Code: 5331
MPN: LHD8426

5331-01-260-4700 (LFT-295)

NIIN: 01-260-4700
In stock
NSN: 5331-01-260-4700
FSC Code: 5331
MPN: LFT295

5331-01-315-2138 (LF80JH)

NIIN: 01-315-2138
In stock
NSN: 5331-01-315-2138
FSC Code: 5331
MPN: LF80JH

5331-01-499-3847 (841-0005-010)

NIIN: 01-499-3847
In stock
NSN: 5331-01-499-3847
FSC Code: 5331
MPN: 8410005010

5331-01-412-9502 (8410-009)

NIIN: 01-412-9502
In stock
NSN: 5331-01-412-9502
FSC Code: 5331
MPN: 8410009

5331-01-046-8004 (LF-340)

NIIN: 01-046-8004
In stock
NSN: 5331-01-046-8004
FSC Code: 5331
MPN: LF340

5331-01-117-9284 (LF-282P-008)

NIIN: 01-117-9284
In stock
NSN: 5331-01-117-9284
FSC Code: 5331
MPN: LF282P008

5331-00-418-7129 (LF-282PB)

NIIN: 00-418-7129
In stock
NSN: 5331-00-418-7129
FSC Code: 5331
MPN: LF282PB

5331-01-287-6526 (LF20JH)

NIIN: 01-287-6526
In stock
NSN: 5331-01-287-6526
FSC Code: 5331
MPN: LF20JH

5331-01-066-4411 (LF-3160V)

NIIN: 01-066-4411
In stock
NSN: 5331-01-066-4411
FSC Code: 5331
MPN: LF3160V

5331-01-068-1812 (LF-142V-90)

NIIN: 01-068-1812
In stock
NSN: 5331-01-068-1812
FSC Code: 5331
MPN: LF142V90

5331-01-125-3507 (LF-1205)

NIIN: 01-125-3507
In stock
NSN: 5331-01-125-3507
FSC Code: 5331
MPN: LF1205

5331-01-394-8529 (840A20P18)

NIIN: 01-394-8529
In stock
NSN: 5331-01-394-8529
FSC Code: 5331
MPN: 840A20P18

5331-01-291-5076 (LE261-0120-0008)

NIIN: 01-291-5076
In stock
NSN: 5331-01-291-5076
FSC Code: 5331
MPN: LE26101200008

5331-01-503-8089 (84002105-001)

NIIN: 01-503-8089
In stock
NSN: 5331-01-503-8089
FSC Code: 5331
MPN: 84002105001

5331-01-503-8091 (84002104-001)

NIIN: 01-503-8091
In stock
NSN: 5331-01-503-8091
FSC Code: 5331
MPN: 84002104001

5331-01-503-8090 (84002103-001)

NIIN: 01-503-8090
In stock
NSN: 5331-01-503-8090
FSC Code: 5331
MPN: 84002103001

5331-01-254-1326 (LD261-0162-0002)

NIIN: 01-254-1326
In stock
NSN: 5331-01-254-1326
FSC Code: 5331
MPN: LD26101620002

5331-01-310-5185 (LD261-0159-0014)

NIIN: 01-310-5185
In stock
NSN: 5331-01-310-5185
FSC Code: 5331
MPN: LD26101590014

5331-00-051-2444 (LD261-0015-0010)

NIIN: 00-051-2444
In stock
NSN: 5331-00-051-2444
FSC Code: 5331
MPN: LD26100150010

5331-01-500-6443 (83-960160)

NIIN: 01-500-6443
In stock
NSN: 5331-01-500-6443
FSC Code: 5331
MPN: 83960160