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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.

5331-01-271-6763 (N-95-81644)

NIIN: 01-271-6763
In stock
NSN: 5331-01-271-6763
FSC Code: 5331
MPN: N9581644

5331-01-318-4564 (N95-81640)

NIIN: 01-318-4564
In stock
NSN: 5331-01-318-4564
FSC Code: 5331
MPN: N9581640

5331-00-003-9437 (N94-86308)

NIIN: 00-003-9437
In stock
NSN: 5331-00-003-9437
FSC Code: 5331
MPN: N9486308

5331-01-334-9956 (N93905)

NIIN: 01-334-9956
In stock
NSN: 5331-01-334-9956
FSC Code: 5331
MPN: N93905

5331-01-036-5562 (N-924)

NIIN: 01-036-5562
In stock
NSN: 5331-01-036-5562
FSC Code: 5331
MPN: N924

5331-01-136-4875 (N9258)

NIIN: 01-136-4875
In stock
NSN: 5331-01-136-4875
FSC Code: 5331
MPN: N9258

5331-01-036-5563 (N-924)

NIIN: 01-036-5563
In stock
NSN: 5331-01-036-5563
FSC Code: 5331
MPN: N924

5331-01-206-3208 (N92151)

NIIN: 01-206-3208
In stock
NSN: 5331-01-206-3208
FSC Code: 5331
MPN: N92151

5331-01-278-6075 (N92235)

NIIN: 01-278-6075
In stock
NSN: 5331-01-278-6075
FSC Code: 5331
MPN: N92235

5331-00-929-5643 (N91-84913)

NIIN: 00-929-5643
In stock
NSN: 5331-00-929-5643
FSC Code: 5331
MPN: N9184913

5331-00-923-8610 (N91-84326)

NIIN: 00-923-8610
In stock
NSN: 5331-00-923-8610
FSC Code: 5331
MPN: N9184326

5331-01-037-8180 (N91-88142)

NIIN: 01-037-8180
In stock
NSN: 5331-01-037-8180
FSC Code: 5331
MPN: N9188142

5331-00-483-8862 (N91-86304)

NIIN: 00-483-8862
In stock
NSN: 5331-00-483-8862
FSC Code: 5331
MPN: N9186304

5331-00-923-8602 (N91-84310)

NIIN: 00-923-8602
In stock
NSN: 5331-00-923-8602
FSC Code: 5331
MPN: N9184310

5331-00-924-8186 (N91-84323)

NIIN: 00-924-8186
In stock
NSN: 5331-00-924-8186
FSC Code: 5331
MPN: N9184323

5331-00-168-4158 (N91-84310)

NIIN: 00-168-4158
In stock
NSN: 5331-00-168-4158
FSC Code: 5331
MPN: N9184310

5331-00-477-4692 (N91-84302)

NIIN: 00-477-4692
In stock
NSN: 5331-00-477-4692
FSC Code: 5331
MPN: N9184302

5331-00-557-9890 (N91-81608)

NIIN: 00-557-9890
In stock
NSN: 5331-00-557-9890
FSC Code: 5331
MPN: N9181608

5331-00-833-3285 (N91-81621)

NIIN: 00-833-3285
In stock
NSN: 5331-00-833-3285
FSC Code: 5331
MPN: N9181621

5331-01-272-3321 (N-917)

NIIN: 01-272-3321
In stock
NSN: 5331-01-272-3321
FSC Code: 5331
MPN: N917

5331-00-100-7019 (N91-81604)

NIIN: 00-100-7019
In stock
NSN: 5331-00-100-7019
FSC Code: 5331
MPN: N9181604

5331-01-203-0271 (N-912)

NIIN: 01-203-0271
In stock
NSN: 5331-01-203-0271
FSC Code: 5331
MPN: N912

5331-00-409-1524 (N90-84324)

NIIN: 00-409-1524
In stock
NSN: 5331-00-409-1524
FSC Code: 5331
MPN: N9084324

5331-01-203-0272 (N-912)

NIIN: 01-203-0272
In stock
NSN: 5331-01-203-0272
FSC Code: 5331
MPN: N912

5331-01-203-2328 (N912)

NIIN: 01-203-2328
In stock
NSN: 5331-01-203-2328
FSC Code: 5331
MPN: N912

5331-01-205-3477 (N-912)

NIIN: 01-205-3477
In stock
NSN: 5331-01-205-3477
FSC Code: 5331
MPN: N912

5331-00-003-9436 (N90-86319)

NIIN: 00-003-9436
In stock
NSN: 5331-00-003-9436
FSC Code: 5331
MPN: N9086319

5331-00-818-0177 (N90-85715)

NIIN: 00-818-0177
In stock
NSN: 5331-00-818-0177
FSC Code: 5331
MPN: N9085715

5331-00-923-8604 (N90-84324)

NIIN: 00-923-8604
In stock
NSN: 5331-00-923-8604
FSC Code: 5331
MPN: N9084324

5331-00-890-8099 (N90-85714)

NIIN: 00-890-8099
In stock
NSN: 5331-00-890-8099
FSC Code: 5331
MPN: N9085714

5331-00-132-1499 (N90-84319)

NIIN: 00-132-1499
In stock
NSN: 5331-00-132-1499
FSC Code: 5331
MPN: N9084319

5331-00-484-7811 (N90-84311)

NIIN: 00-484-7811
In stock
NSN: 5331-00-484-7811
FSC Code: 5331
MPN: N9084311

5331-00-820-8962 (N90-82805)

NIIN: 00-820-8962
In stock
NSN: 5331-00-820-8962
FSC Code: 5331
MPN: N9082805

5331-01-425-0129 (AD20015)

NIIN: 01-425-0129
In stock
NSN: 5331-01-425-0129
FSC Code: 5331
MPN: AD20015

5331-01-191-7157 (N90-81629)

NIIN: 01-191-7157
In stock
NSN: 5331-01-191-7157
FSC Code: 5331
MPN: N9081629

5331-01-206-6819 (N90-81624)

NIIN: 01-206-6819
In stock
NSN: 5331-01-206-6819
FSC Code: 5331
MPN: N9081624

5331-00-833-7480 (N90-82809)

NIIN: 00-833-7480
In stock
NSN: 5331-00-833-7480
FSC Code: 5331
MPN: N9082809

5331-00-008-5963 (N90-82804)

NIIN: 00-008-5963
In stock
NSN: 5331-00-008-5963
FSC Code: 5331
MPN: N9082804

5331-00-565-2567 (N90-82801)

NIIN: 00-565-2567
In stock
NSN: 5331-00-565-2567
FSC Code: 5331
MPN: N9082801

5331-01-021-5106 (N90-81615)

NIIN: 01-021-5106
In stock
NSN: 5331-01-021-5106
FSC Code: 5331
MPN: N9081615

5331-01-182-5506 (N90-81621)

NIIN: 01-182-5506
In stock
NSN: 5331-01-182-5506
FSC Code: 5331
MPN: N9081621

5331-00-397-4536 (N880PC4)

NIIN: 00-397-4536
In stock
NSN: 5331-00-397-4536
FSC Code: 5331
MPN: N880PC4

5331-00-397-4817 (N880PC7)

NIIN: 00-397-4817
In stock
NSN: 5331-00-397-4817
FSC Code: 5331
MPN: N880PC7

5331-00-878-0394 (N832SH1PC4B)

NIIN: 00-878-0394
In stock
NSN: 5331-00-878-0394
FSC Code: 5331
MPN: N832SH1PC4B

5331-01-275-0234 (N8225)

NIIN: 01-275-0234
In stock
NSN: 5331-01-275-0234
FSC Code: 5331
MPN: N8225

5331-01-209-7026 (N72347)

NIIN: 01-209-7026
In stock
NSN: 5331-01-209-7026
FSC Code: 5331
MPN: N72347

5331-01-259-9303 (N72257)

NIIN: 01-259-9303
In stock
NSN: 5331-01-259-9303
FSC Code: 5331
MPN: N72257

5331-01-380-5134 (ACH-42-0116)

NIIN: 01-380-5134
In stock
NSN: 5331-01-380-5134
FSC Code: 5331
MPN: ACH420116