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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.

5331-01-068-1812 (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

5331-01-500-6445 (83-880830)

NIIN: 01-500-6445
In stock
NSN: 5331-01-500-6445
FSC Code: 5331
MPN: 83880830

5331-01-491-6824 (838567-6)

NIIN: 01-491-6824
In stock
NSN: 5331-01-491-6824
FSC Code: 5331
MPN: 8385676

5331-01-398-9507 (838445-5)

NIIN: 01-398-9507
In stock
NSN: 5331-01-398-9507
FSC Code: 5331
MPN: 8384455

5331-00-506-3375 (LARC-95-245-202)

NIIN: 00-506-3375
In stock
NSN: 5331-00-506-3375
FSC Code: 5331
MPN: LARC95245202

5331-01-500-6447 (83-740290)

NIIN: 01-500-6447
In stock
NSN: 5331-01-500-6447
FSC Code: 5331
MPN: 83740290

5331-01-082-7091 (LA-3262-62)

NIIN: 01-082-7091
In stock
NSN: 5331-01-082-7091
FSC Code: 5331
MPN: LA326262

5331-01-287-0231 (LA157400-068)

NIIN: 01-287-0231
In stock
NSN: 5331-01-287-0231
FSC Code: 5331
MPN: LA157400068

5331-01-126-0083 (LA-1565-18)

NIIN: 01-126-0083
In stock
NSN: 5331-01-126-0083
FSC Code: 5331
MPN: LA156518

5331-00-444-9730 (L962)

NIIN: 00-444-9730
In stock
NSN: 5331-00-444-9730
FSC Code: 5331
MPN: L962

5331-00-232-8959 (L99-029)

NIIN: 00-232-8959
In stock
NSN: 5331-00-232-8959
FSC Code: 5331
MPN: L99029

5331-01-500-6446 (83-480480)

NIIN: 01-500-6446
In stock
NSN: 5331-01-500-6446
FSC Code: 5331
MPN: 83480480

5331-01-275-0235 (L-911)

NIIN: 01-275-0235
In stock
NSN: 5331-01-275-0235
FSC Code: 5331
MPN: L911

5331-12-195-5337 (OR505-25N169-26SCHWARZ)

NIIN: 12-195-5337
In stock
NSN: 5331-12-195-5337
FSC Code: 5331
MPN: OR50525N16926SCHWARZ

5331-01-275-7625 (L7755-9)

NIIN: 01-275-7625
In stock
NSN: 5331-01-275-7625
FSC Code: 5331
MPN: L77559

5331-00-490-5398 (L6650-7)

NIIN: 00-490-5398
In stock
NSN: 5331-00-490-5398
FSC Code: 5331
MPN: L66507

5331-01-085-6862 (L6650-25)

NIIN: 01-085-6862
In stock
NSN: 5331-01-085-6862
FSC Code: 5331
MPN: L665025

5331-01-022-8877 (L6569)

NIIN: 01-022-8877
In stock
NSN: 5331-01-022-8877
FSC Code: 5331
MPN: L6569

5331-01-376-9516 (8682-001-087)

NIIN: 01-376-9516
In stock
NSN: 5331-01-376-9516
FSC Code: 5331
MPN: 8682001087

5331-01-350-4368 (8329-71417)

NIIN: 01-350-4368
In stock
NSN: 5331-01-350-4368
FSC Code: 5331
MPN: 832971417

5331-01-439-6657 (832518-001)

NIIN: 01-439-6657
In stock
NSN: 5331-01-439-6657
FSC Code: 5331
MPN: 832518001

5331-01-438-4496 (832519-001)

NIIN: 01-438-4496
In stock
NSN: 5331-01-438-4496
FSC Code: 5331
MPN: 832519001

5331-01-541-3813 (83248/2-203)

NIIN: 01-541-3813
In stock
NSN: 5331-01-541-3813
FSC Code: 5331
MPN: 832482203

5331-01-541-3814 (83248/2-207)

NIIN: 01-541-3814
In stock
NSN: 5331-01-541-3814
FSC Code: 5331
MPN: 832482207

5331-01-106-6461 (L552)

NIIN: 01-106-6461
In stock
NSN: 5331-01-106-6461
FSC Code: 5331
MPN: L552

5331-01-513-8406 (831-929)

NIIN: 01-513-8406
In stock
NSN: 5331-01-513-8406
FSC Code: 5331
MPN: 831929

5331-01-500-6450 (83-180101)

NIIN: 01-500-6450
In stock
NSN: 5331-01-500-6450
FSC Code: 5331
MPN: 83180101

5331-01-557-1879 (893339/10)

NIIN: 01-557-1879
In stock
NSN: 5331-01-557-1879
FSC Code: 5331
MPN: 89333910

5331-01-329-7052 (L53817)

NIIN: 01-329-7052
In stock
NSN: 5331-01-329-7052
FSC Code: 5331
MPN: L53817

5331-01-330-5277 (L53816)

NIIN: 01-330-5277
In stock
NSN: 5331-01-330-5277
FSC Code: 5331
MPN: L53816

5331-41-000-5536 (830-415)

NIIN: 41-000-5536
In stock
NSN: 5331-41-000-5536
FSC Code: 5331
MPN: 830415

5331-01-440-6247 (830-1-1/2-PACKING)

NIIN: 01-440-6247
In stock
NSN: 5331-01-440-6247
FSC Code: 5331
MPN: 830112PACKING

5331-00-970-1866 (L5-28-2)

NIIN: 00-970-1866
In stock
NSN: 5331-00-970-1866
FSC Code: 5331
MPN: L5282

5331-01-457-4081 (83.10008.0)

NIIN: 01-457-4081
In stock
NSN: 5331-01-457-4081
FSC Code: 5331
MPN: 83100080

5331-01-382-0948 (830.750IN)

NIIN: 01-382-0948
In stock
NSN: 5331-01-382-0948
FSC Code: 5331
MPN: 830750IN

5331-01-457-4436 (83.01057.0)

NIIN: 01-457-4436
In stock
NSN: 5331-01-457-4436
FSC Code: 5331
MPN: 83010570

5331-01-457-4067 (83.01055.0)

NIIN: 01-457-4067
In stock
NSN: 5331-01-457-4067
FSC Code: 5331
MPN: 83010550

5331-01-555-1349 (ORM0300-08200)

NIIN: 01-555-1349
In stock
NSN: 5331-01-555-1349
FSC Code: 5331
MPN: ORM030008200