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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.

5331-01-549-6984 (2-250)

NIIN: 01-549-6984
In stock
NSN: 5331-01-549-6984
FSC Code: 5331
MPN: 2250

5331-01-390-3519 (845-6800704-181)

NIIN: 01-390-3519
In stock
NSN: 5331-01-390-3519
FSC Code: 5331
MPN: 8456800704181

5331-01-408-8483 (2249U214-96)

NIIN: 01-408-8483
In stock
NSN: 5331-01-408-8483
FSC Code: 5331
MPN: 2249U21496

5331-01-414-5652 (2-249N497-70)

NIIN: 01-414-5652
In stock
NSN: 5331-01-414-5652
FSC Code: 5331
MPN: 2249N49770

5331-01-546-9454 (2-249VM835-75)

NIIN: 01-546-9454
In stock
NSN: 5331-01-546-9454
FSC Code: 5331
MPN: 2249VM83575

5331-01-385-7868 (AS568-249/AMS3212)

NIIN: 01-385-7868
In stock
NSN: 5331-01-385-7868
FSC Code: 5331
MPN: AS568249AMS3212

5331-01-383-6783 (M2AA810A13EA14F17)

NIIN: 01-383-6783
In stock
NSN: 5331-01-383-6783
FSC Code: 5331
MPN: M2AA810A13EA14F17

5331-01-556-0448 (6278E74-P14)

NIIN: 01-556-0448
In stock
NSN: 5331-01-556-0448
FSC Code: 5331
MPN: 6278E74P14

5331-01-471-6158 (2-247E1267-80)

NIIN: 01-471-6158
In stock
NSN: 5331-01-471-6158
FSC Code: 5331
MPN: 2247E126780

5331-01-382-4217 (2-247CPD47-761)

NIIN: 01-382-4217
In stock
NSN: 5331-01-382-4217
FSC Code: 5331
MPN: 2247CPD47761

5331-01-354-0235 (2-246N507-90)

NIIN: 01-354-0235
In stock
NSN: 5331-01-354-0235
FSC Code: 5331
MPN: 2246N50790

5331-01-523-3952 (2-246-N818-70)

NIIN: 01-523-3952
In stock
NSN: 5331-01-523-3952
FSC Code: 5331
MPN: 2246N81870

5331-01-519-0584 (2-246V884-75)

NIIN: 01-519-0584
In stock
NSN: 5331-01-519-0584
FSC Code: 5331
MPN: 2246V88475

5331-01-562-8424 (2-246N951-75)

NIIN: 01-562-8424
In stock
NSN: 5331-01-562-8424
FSC Code: 5331
MPN: 2246N95175

5331-01-555-5083 (224-6361)

NIIN: 01-555-5083
In stock
NSN: 5331-01-555-5083
FSC Code: 5331
MPN: 2246361

5331-01-464-3836 (2-245-V884-75)

NIIN: 01-464-3836
In stock
NSN: 5331-01-464-3836
FSC Code: 5331
MPN: 2245V88475

5331-01-437-0082 (MIL-DTL-25988/3)

NIIN: 01-437-0082
In stock
NSN: 5331-01-437-0082
FSC Code: 5331
MPN: MILDTL259883

5331-01-385-7869 (AS568-244/AMS3212)

NIIN: 01-385-7869
In stock
NSN: 5331-01-385-7869
FSC Code: 5331
MPN: AS568244AMS3212

5331-01-502-9269 (2-244N1470-70)

NIIN: 01-502-9269
In stock
NSN: 5331-01-502-9269
FSC Code: 5331
MPN: 2244N147070

5331-01-365-0276 (2-243S613-60)

NIIN: 01-365-0276
In stock
NSN: 5331-01-365-0276
FSC Code: 5331
MPN: 2243S61360

5331-01-453-1845 (2-243V884-75)

NIIN: 01-453-1845
In stock
NSN: 5331-01-453-1845
FSC Code: 5331
MPN: 2243V88475

5331-01-383-4066 (2-243E962-90)

NIIN: 01-383-4066
In stock
NSN: 5331-01-383-4066
FSC Code: 5331
MPN: 2243E96290

5331-01-556-0450 (6278E74-P15)

NIIN: 01-556-0450
In stock
NSN: 5331-01-556-0450
FSC Code: 5331
MPN: 6278E74P15

5331-01-519-3250 (2-242V894-90)

NIIN: 01-519-3250
In stock
NSN: 5331-01-519-3250
FSC Code: 5331
MPN: 2242V89490

5331-01-521-1088 (2-241L1120-70)

NIIN: 01-521-1088
In stock
NSN: 5331-01-521-1088
FSC Code: 5331
MPN: 2241L112070

5331-01-546-4512 (2-240VM835-74)

NIIN: 01-546-4512
In stock
NSN: 5331-01-546-4512
FSC Code: 5331
MPN: 2240VM83574

5331-01-501-4324 (5331PL0658583)

NIIN: 01-501-4324
In stock
NSN: 5331-01-501-4324
FSC Code: 5331
MPN: 5331PL0658583

5331-01-556-0444 (6278E74-P12)

NIIN: 01-556-0444
In stock
NSN: 5331-01-556-0444
FSC Code: 5331
MPN: 6278E74P12

5331-01-383-3704 (2-239E962-90)

NIIN: 01-383-3704
In stock
NSN: 5331-01-383-3704
FSC Code: 5331
MPN: 2239E96290

5331-01-368-4665 (2-239V747-75)

NIIN: 01-368-4665
In stock
NSN: 5331-01-368-4665
FSC Code: 5331
MPN: 2239V74775

5331-01-342-7761 (2-238-E515-80)

NIIN: 01-342-7761
In stock
NSN: 5331-01-342-7761
FSC Code: 5331
MPN: 2238E51580

5331-01-385-6492 (MIL-DTL-25988/3)

NIIN: 01-385-6492
In stock
NSN: 5331-01-385-6492
FSC Code: 5331
MPN: MILDTL259883

5331-01-352-7742 (2-238N507-90)

NIIN: 01-352-7742
In stock
NSN: 5331-01-352-7742
FSC Code: 5331
MPN: 2238N50790

5331-01-418-9135 (2-238E688-70)

NIIN: 01-418-9135
In stock
NSN: 5331-01-418-9135
FSC Code: 5331
MPN: 2238E68870

5331-01-452-0672 (2-237V884-75)

NIIN: 01-452-0672
In stock
NSN: 5331-01-452-0672
FSC Code: 5331
MPN: 2237V88475

5331-01-508-0244 (2-238)

NIIN: 01-508-0244
In stock
NSN: 5331-01-508-0244
FSC Code: 5331
MPN: 2238

5331-01-383-3447 (2-237A)

NIIN: 01-383-3447
In stock
NSN: 5331-01-383-3447
FSC Code: 5331
MPN: 2237A

5331-01-418-9134 (2-237E688-70)

NIIN: 01-418-9134
In stock
NSN: 5331-01-418-9134
FSC Code: 5331
MPN: 2237E68870

5331-01-337-4746 (5S45700)

NIIN: 01-337-4746
In stock
NSN: 5331-01-337-4746
FSC Code: 5331
MPN: 5S45700

5331-01-530-8247 (2-235N0552-90)

NIIN: 01-530-8247
In stock
NSN: 5331-01-530-8247
FSC Code: 5331
MPN: 2235N055290

5331-01-553-1806 (2-235-V709-90CP)

NIIN: 01-553-1806
In stock
NSN: 5331-01-553-1806
FSC Code: 5331
MPN: 2235V70990CP

5331-01-508-4143 (2-236)

NIIN: 01-508-4143
In stock
NSN: 5331-01-508-4143
FSC Code: 5331
MPN: 2236

5331-01-381-5337 (2-235A)

NIIN: 01-381-5337
In stock
NSN: 5331-01-381-5337
FSC Code: 5331
MPN: 2235A

5331-00-118-2981 (5S1105)

NIIN: 00-118-2981
In stock
NSN: 5331-00-118-2981
FSC Code: 5331
MPN: 5S1105

5331-00-576-5308 (5R20-32)

NIIN: 00-576-5308
In stock
NSN: 5331-00-576-5308
FSC Code: 5331
MPN: 5R2032

5331-01-407-2399 (2-234E540-80)

NIIN: 01-407-2399
In stock
NSN: 5331-01-407-2399
FSC Code: 5331
MPN: 2234E54080

5331-00-810-9386 (5R21-11)

NIIN: 00-810-9386
In stock
NSN: 5331-00-810-9386
FSC Code: 5331
MPN: 5R2111

5331-00-810-9382 (5R21-16)

NIIN: 00-810-9382
In stock
NSN: 5331-00-810-9382
FSC Code: 5331
MPN: 5R2116