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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.

5331-01-236-4373 (9-4782-12)

NIIN: 01-236-4373
In stock
NSN: 5331-01-236-4373
FSC Code: 5331
MPN: 9478212

5331-01-205-9772 (947314-1)

NIIN: 01-205-9772
In stock
NSN: 5331-01-205-9772
FSC Code: 5331
MPN: 9473141

5331-00-433-3728 (946.91.27.918)

NIIN: 00-433-3728
In stock
NSN: 5331-00-433-3728
FSC Code: 5331
MPN: 9469127918

5331-01-188-9651 (946.91.26.234)

NIIN: 01-188-9651
In stock
NSN: 5331-01-188-9651
FSC Code: 5331
MPN: 9469126234

5331-00-492-9177 (945B161-1)

NIIN: 00-492-9177
In stock
NSN: 5331-00-492-9177
FSC Code: 5331
MPN: 945B1611

5331-01-062-4835 (9453-186)

NIIN: 01-062-4835
In stock
NSN: 5331-01-062-4835
FSC Code: 5331
MPN: 9453186

5331-01-220-0153 (9452K28)

NIIN: 01-220-0153
In stock
NSN: 5331-01-220-0153
FSC Code: 5331
MPN: 9452K28

5331-01-178-5973 (9452K22)

NIIN: 01-178-5973
In stock
NSN: 5331-01-178-5973
FSC Code: 5331
MPN: 9452K22

5331-01-072-1543 (94512-34)

NIIN: 01-072-1543
In stock
NSN: 5331-01-072-1543
FSC Code: 5331
MPN: 9451234

5331-01-190-1841 (94501-26)

NIIN: 01-190-1841
In stock
NSN: 5331-01-190-1841
FSC Code: 5331
MPN: 9450126

5331-01-421-0509 (5-025)

NIIN: 01-421-0509
In stock
NSN: 5331-01-421-0509
FSC Code: 5331
MPN: 5025

5331-01-421-0512 (5-024)

NIIN: 01-421-0512
In stock
NSN: 5331-01-421-0512
FSC Code: 5331
MPN: 5024

5331-01-449-5494 (5-023-0458)

NIIN: 01-449-5494
In stock
NSN: 5331-01-449-5494
FSC Code: 5331
MPN: 50230458

5331-01-516-8028 (5-023-186)

NIIN: 01-516-8028
In stock
NSN: 5331-01-516-8028
FSC Code: 5331
MPN: 5023186

5331-01-172-0910 (9443135AEP14)

NIIN: 01-172-0910
In stock
NSN: 5331-01-172-0910
FSC Code: 5331
MPN: 9443135AEP14

5331-01-124-7983 (9443135ABPC94)

NIIN: 01-124-7983
In stock
NSN: 5331-01-124-7983
FSC Code: 5331
MPN: 9443135ABPC94

5331-01-514-7458 (C1-017-0090)

NIIN: 01-514-7458
In stock
NSN: 5331-01-514-7458
FSC Code: 5331
MPN: C10170090

5331-01-449-5495 (5-023-0459)

NIIN: 01-449-5495
In stock
NSN: 5331-01-449-5495
FSC Code: 5331
MPN: 50230459

5331-01-454-2280 (5-023-0508)

NIIN: 01-454-2280
In stock
NSN: 5331-01-454-2280
FSC Code: 5331
MPN: 50230508

5331-01-454-2666 (5-023-0463)

NIIN: 01-454-2666
In stock
NSN: 5331-01-454-2666
FSC Code: 5331
MPN: 50230463

5331-01-449-8864 (5-023-0451)

NIIN: 01-449-8864
In stock
NSN: 5331-01-449-8864
FSC Code: 5331
MPN: 50230451

5331-01-421-0511 (5-022)

NIIN: 01-421-0511
In stock
NSN: 5331-01-421-0511
FSC Code: 5331
MPN: 5022

5331-01-326-4316 (9431-10-0020-500)

NIIN: 01-326-4316
In stock
NSN: 5331-01-326-4316
FSC Code: 5331
MPN: 9431100020500

5331-01-125-1093 (94236-4)

NIIN: 01-125-1093
In stock
NSN: 5331-01-125-1093
FSC Code: 5331
MPN: 942364

5331-01-273-2297 (9416-00-0000)

NIIN: 01-273-2297
In stock
NSN: 5331-01-273-2297
FSC Code: 5331
MPN: 9416000000

5331-01-273-1647 (9416-00-0000)

NIIN: 01-273-1647
In stock
NSN: 5331-01-273-1647
FSC Code: 5331
MPN: 9416000000

5331-01-207-7602 (9416-00-0000)

NIIN: 01-207-7602
In stock
NSN: 5331-01-207-7602
FSC Code: 5331
MPN: 9416000000

5331-01-273-2296 (9416-00-0000)

NIIN: 01-273-2296
In stock
NSN: 5331-01-273-2296
FSC Code: 5331
MPN: 9416000000

5331-01-277-8879 (9416-00-0000)

NIIN: 01-277-8879
In stock
NSN: 5331-01-277-8879
FSC Code: 5331
MPN: 9416000000

5331-01-168-9914 (9410K11)

NIIN: 01-168-9914
In stock
NSN: 5331-01-168-9914
FSC Code: 5331
MPN: 9410K11

5331-01-335-2792 (9407K21)

NIIN: 01-335-2792
In stock
NSN: 5331-01-335-2792
FSC Code: 5331
MPN: 9407K21

5331-01-312-7169 (9407K14-1)

NIIN: 01-312-7169
In stock
NSN: 5331-01-312-7169
FSC Code: 5331
MPN: 9407K141

5331-01-196-3834 (9-4054-80-427)

NIIN: 01-196-3834
In stock
NSN: 5331-01-196-3834
FSC Code: 5331
MPN: 9405480427

5331-01-267-9306 (9-4054-80-410)

NIIN: 01-267-9306
In stock
NSN: 5331-01-267-9306
FSC Code: 5331
MPN: 9405480410

5331-01-267-9305 (9-4054-80-344)

NIIN: 01-267-9305
In stock
NSN: 5331-01-267-9305
FSC Code: 5331
MPN: 9405480344

5331-01-267-9307 (9-4054-80-419)

NIIN: 01-267-9307
In stock
NSN: 5331-01-267-9307
FSC Code: 5331
MPN: 9405480419

5331-01-267-6715 (9-4045-80-78)

NIIN: 01-267-6715
In stock
NSN: 5331-01-267-6715
FSC Code: 5331
MPN: 940458078

5331-01-195-8879 (940388C1)

NIIN: 01-195-8879
In stock
NSN: 5331-01-195-8879
FSC Code: 5331
MPN: 940388C1

5331-01-507-4774 (5017-027)

NIIN: 01-507-4774
In stock
NSN: 5331-01-507-4774
FSC Code: 5331
MPN: 5017027

5331-01-551-9314 (501-6937308PC19)

NIIN: 01-551-9314
In stock
NSN: 5331-01-551-9314
FSC Code: 5331
MPN: 5016937308PC19

5331-01-394-5996 (MIL-G-22050GRADE3SIZEAS568-158)

NIIN: 01-394-5996
In stock
NSN: 5331-01-394-5996
FSC Code: 5331
MPN: MILG22050GRADE3SIZEAS568158

5331-01-446-7945 (501-6603008)

NIIN: 01-446-7945
In stock
NSN: 5331-01-446-7945
FSC Code: 5331
MPN: 5016603008

5331-00-298-0570 (940179-3)

NIIN: 00-298-0570
In stock
NSN: 5331-00-298-0570
FSC Code: 5331
MPN: 9401793

5331-00-531-4683 (9400586-1)

NIIN: 00-531-4683
In stock
NSN: 5331-00-531-4683
FSC Code: 5331
MPN: 94005861

5331-01-332-1446 (93-T57-4)

NIIN: 01-332-1446
In stock
NSN: 5331-01-332-1446
FSC Code: 5331
MPN: 93T574

5331-01-534-3439 (NO. 2 50155AANO2)

NIIN: 01-534-3439
In stock
NSN: 5331-01-534-3439
FSC Code: 5331
MPN: NO250155AANO2

5331-01-127-1366 (939747C1)

NIIN: 01-127-1366
In stock
NSN: 5331-01-127-1366
FSC Code: 5331
MPN: 939747C1

5331-01-195-1503 (939745C1)

NIIN: 01-195-1503
In stock
NSN: 5331-01-195-1503
FSC Code: 5331
MPN: 939745C1