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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.

5331-00-492-6368 (85W37)

NIIN: 00-492-6368
In stock
NSN: 5331-00-492-6368
FSC Code: 5331
MPN: 85W37

5331-00-815-9699 (85M71-36PC21)

NIIN: 00-815-9699
In stock
NSN: 5331-00-815-9699
FSC Code: 5331
MPN: 85M7136PC21

5331-00-820-2920 (85M71-40PC34)

NIIN: 00-820-2920
In stock
NSN: 5331-00-820-2920
FSC Code: 5331
MPN: 85M7140PC34

5331-01-282-8083 (8599-4.0IN)

NIIN: 01-282-8083
In stock
NSN: 5331-01-282-8083
FSC Code: 5331
MPN: 859940IN

5331-01-126-1552 (8598B)

NIIN: 01-126-1552
In stock
NSN: 5331-01-126-1552
FSC Code: 5331
MPN: 8598B

5331-14-427-5847 (SR467PB701)

NIIN: 14-427-5847
In stock
NSN: 5331-14-427-5847
FSC Code: 5331
MPN: SR467PB701

5331-00-846-4650 (8587449-6)

NIIN: 00-846-4650
In stock
NSN: 5331-00-846-4650
FSC Code: 5331
MPN: 85874496

5331-00-125-3947 (8587449-7)

NIIN: 00-125-3947
In stock
NSN: 5331-00-125-3947
FSC Code: 5331
MPN: 85874497

5331-00-845-5641 (8587449-5)

NIIN: 00-845-5641
In stock
NSN: 5331-00-845-5641
FSC Code: 5331
MPN: 85874495

5331-00-846-6879 (8587449-2)

NIIN: 00-846-6879
In stock
NSN: 5331-00-846-6879
FSC Code: 5331
MPN: 85874492

5331-00-143-8759 (8587449-4)

NIIN: 00-143-8759
In stock
NSN: 5331-00-143-8759
FSC Code: 5331
MPN: 85874494

5331-00-183-0875 (858-55001)

NIIN: 00-183-0875
In stock
NSN: 5331-00-183-0875
FSC Code: 5331
MPN: 85855001

5331-00-845-5639 (8587449-1)

NIIN: 00-845-5639
In stock
NSN: 5331-00-845-5639
FSC Code: 5331
MPN: 85874491

5331-01-287-0227 (858464-1)

NIIN: 01-287-0227
In stock
NSN: 5331-01-287-0227
FSC Code: 5331
MPN: 8584641

5331-01-277-8802 (8582B)

NIIN: 01-277-8802
In stock
NSN: 5331-01-277-8802
FSC Code: 5331
MPN: 8582B

5331-14-553-6394 (43-37-B1REP23-8)

NIIN: 14-553-6394
In stock
NSN: 5331-14-553-6394
FSC Code: 5331
MPN: 4337B1REP238

5331-14-553-6396 (43-37-B1REP118)

NIIN: 14-553-6396
In stock
NSN: 5331-14-553-6396
FSC Code: 5331
MPN: 4337B1REP118

5331-14-553-6392 (43-37-B1REP23-2)

NIIN: 14-553-6392
In stock
NSN: 5331-14-553-6392
FSC Code: 5331
MPN: 4337B1REP232

5331-14-553-6393 (TO123.19-6.99NIT)

NIIN: 14-553-6393
In stock
NSN: 5331-14-553-6393
FSC Code: 5331
MPN: TO12319699NIT

5331-00-585-5957 (857B952P1)

NIIN: 00-585-5957
In stock
NSN: 5331-00-585-5957
FSC Code: 5331
MPN: 857B952P1

5331-01-463-8791 (SPECIFIC V-22 AE1107C ENGINE NSNSPECIFICV22AE1107CENGINE)

NIIN: 01-463-8791
In stock
NSN: 5331-01-463-8791
FSC Code: 5331
MPN: SPECIFICV22AE1107CENGINENSNSPECIFICV22AE1107CENGINE

5331-01-448-3366 (432942-001)

NIIN: 01-448-3366
In stock
NSN: 5331-01-448-3366
FSC Code: 5331
MPN: 432942001

5331-01-448-3369 (432940-001)

NIIN: 01-448-3369
In stock
NSN: 5331-01-448-3369
FSC Code: 5331
MPN: 432940001

5331-00-802-8912 (8569VL123X5)

NIIN: 00-802-8912
In stock
NSN: 5331-00-802-8912
FSC Code: 5331
MPN: 8569VL123X5

5331-00-851-2769 (8568-780R1PC30)

NIIN: 00-851-2769
In stock
NSN: 5331-00-851-2769
FSC Code: 5331
MPN: 8568780R1PC30

5331-00-913-1166 (8567B)

NIIN: 00-913-1166
In stock
NSN: 5331-00-913-1166
FSC Code: 5331
MPN: 8567B

5331-01-365-6485 (6418Z557)

NIIN: 01-365-6485
In stock
NSN: 5331-01-365-6485
FSC Code: 5331
MPN: 6418Z557

5331-00-840-6176 (8563-003RIPC19)

NIIN: 00-840-6176
In stock
NSN: 5331-00-840-6176
FSC Code: 5331
MPN: 8563003RIPC19

5331-01-132-2050 (8561-295-37013-74)

NIIN: 01-132-2050
In stock
NSN: 5331-01-132-2050
FSC Code: 5331
MPN: 85612953701374

5331-01-129-4335 (8561-295-37013-27)

NIIN: 01-129-4335
In stock
NSN: 5331-01-129-4335
FSC Code: 5331
MPN: 85612953701327

5331-01-127-2875 (8561-295-37013-7)

NIIN: 01-127-2875
In stock
NSN: 5331-01-127-2875
FSC Code: 5331
MPN: 8561295370137

5331-12-340-9252 (43164001KEY13.1)

NIIN: 12-340-9252
In stock
NSN: 5331-12-340-9252
FSC Code: 5331
MPN: 43164001KEY131

5331-00-121-2739 (8555-023PC23)

NIIN: 00-121-2739
In stock
NSN: 5331-00-121-2739
FSC Code: 5331
MPN: 8555023PC23

5331-00-097-9030 (8555-023R1PC29)

NIIN: 00-097-9030
In stock
NSN: 5331-00-097-9030
FSC Code: 5331
MPN: 8555023R1PC29

5331-00-179-1484 (853992-00)

NIIN: 00-179-1484
In stock
NSN: 5331-00-179-1484
FSC Code: 5331
MPN: 85399200

5331-00-984-6807 (853-8312)

NIIN: 00-984-6807
In stock
NSN: 5331-00-984-6807
FSC Code: 5331
MPN: 8538312

5331-01-289-7841 (853-879)

NIIN: 01-289-7841
In stock
NSN: 5331-01-289-7841
FSC Code: 5331
MPN: 853879

5331-00-232-8671 (853-7675)

NIIN: 00-232-8671
In stock
NSN: 5331-00-232-8671
FSC Code: 5331
MPN: 8537675

5331-00-003-4142 (853-7538)

NIIN: 00-003-4142
In stock
NSN: 5331-00-003-4142
FSC Code: 5331
MPN: 8537538

5331-01-146-0495 (853-692)

NIIN: 01-146-0495
In stock
NSN: 5331-01-146-0495
FSC Code: 5331
MPN: 853692

5331-00-936-9554 (853-622)

NIIN: 00-936-9554
In stock
NSN: 5331-00-936-9554
FSC Code: 5331
MPN: 853622

5331-01-513-8424 (430-405)

NIIN: 01-513-8424
In stock
NSN: 5331-01-513-8424
FSC Code: 5331
MPN: 430405

5331-00-589-5745 (853-1)

NIIN: 00-589-5745
In stock
NSN: 5331-00-589-5745
FSC Code: 5331
MPN: 8531

5331-01-513-8423 (430-225)

NIIN: 01-513-8423
In stock
NSN: 5331-01-513-8423
FSC Code: 5331
MPN: 430225

5331-00-404-8224 (853-07782-000)

NIIN: 00-404-8224
In stock
NSN: 5331-00-404-8224
FSC Code: 5331
MPN: 85307782000

5331-01-035-2263 (853-07868-00)

NIIN: 01-035-2263
In stock
NSN: 5331-01-035-2263
FSC Code: 5331
MPN: 8530786800

5331-01-513-6820 (430-205)

NIIN: 01-513-6820
In stock
NSN: 5331-01-513-6820
FSC Code: 5331
MPN: 430205

5331-01-513-8426 (430-175)

NIIN: 01-513-8426
In stock
NSN: 5331-01-513-8426
FSC Code: 5331
MPN: 430175