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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.

5331-00-003-4137 (8S5011)

NIIN: 00-003-4137
In stock
NSN: 5331-00-003-4137
FSC Code: 5331
MPN: 8S5011

5331-01-097-6625 (8S6251)

NIIN: 01-097-6625
In stock
NSN: 5331-01-097-6625
FSC Code: 5331
MPN: 8S6251

5331-00-431-7139 (8S0768)

NIIN: 00-431-7139
In stock
NSN: 5331-00-431-7139
FSC Code: 5331
MPN: 8S0768

5331-01-183-5661 (8P300-10)

NIIN: 01-183-5661
In stock
NSN: 5331-01-183-5661
FSC Code: 5331
MPN: 8P30010

5331-01-217-2016 (8N4638)

NIIN: 01-217-2016
In stock
NSN: 5331-01-217-2016
FSC Code: 5331
MPN: 8N4638

5331-01-207-0274 (8N2559)

NIIN: 01-207-0274
In stock
NSN: 5331-01-207-0274
FSC Code: 5331
MPN: 8N2559

5331-00-999-5505 (8M-8157)

NIIN: 00-999-5505
In stock
NSN: 5331-00-999-5505
FSC Code: 5331
MPN: 8M8157

5331-00-948-9775 (8M7437)

NIIN: 00-948-9775
In stock
NSN: 5331-00-948-9775
FSC Code: 5331
MPN: 8M7437

5331-00-431-7140 (8M5260-00)

NIIN: 00-431-7140
In stock
NSN: 5331-00-431-7140
FSC Code: 5331
MPN: 8M526000

5331-00-613-6439 (8M-5255)

NIIN: 00-613-6439
In stock
NSN: 5331-00-613-6439
FSC Code: 5331
MPN: 8M5255

5331-01-107-5182 (8M-4433)

NIIN: 01-107-5182
In stock
NSN: 5331-01-107-5182
FSC Code: 5331
MPN: 8M4433

5331-00-948-6068 (8M4991)

NIIN: 00-948-6068
In stock
NSN: 5331-00-948-6068
FSC Code: 5331
MPN: 8M4991

5331-00-914-5310 (8M5007)

NIIN: 00-914-5310
In stock
NSN: 5331-00-914-5310
FSC Code: 5331
MPN: 8M5007

5331-00-999-5504 (8M4446)

NIIN: 00-999-5504
In stock
NSN: 5331-00-999-5504
FSC Code: 5331
MPN: 8M4446

5331-00-999-5502 (8M-4390)

NIIN: 00-999-5502
In stock
NSN: 5331-00-999-5502
FSC Code: 5331
MPN: 8M4390

5331-01-102-5599 (8L3017)

NIIN: 01-102-5599
In stock
NSN: 5331-01-102-5599
FSC Code: 5331
MPN: 8L3017

5331-01-207-0271 (8J1665)

NIIN: 01-207-0271
In stock
NSN: 5331-01-207-0271
FSC Code: 5331
MPN: 8J1665

5331-01-064-8276 (8J1699)

NIIN: 01-064-8276
In stock
NSN: 5331-01-064-8276
FSC Code: 5331
MPN: 8J1699

5331-01-334-0371 (8J0484)

NIIN: 01-334-0371
In stock
NSN: 5331-01-334-0371
FSC Code: 5331
MPN: 8J0484

5331-01-126-0833 (8H5015PC9)

NIIN: 01-126-0833
In stock
NSN: 5331-01-126-0833
FSC Code: 5331
MPN: 8H5015PC9

5331-01-501-5129 (46-136374P25)

NIIN: 01-501-5129
In stock
NSN: 5331-01-501-5129
FSC Code: 5331
MPN: 46136374P25

5331-00-848-6108 (8H2262)

NIIN: 00-848-6108
In stock
NSN: 5331-00-848-6108
FSC Code: 5331
MPN: 8H2262

5331-00-848-6109 (8H2265)

NIIN: 00-848-6109
In stock
NSN: 5331-00-848-6109
FSC Code: 5331
MPN: 8H2265

5331-00-828-9041 (8H0273)

NIIN: 00-828-9041
In stock
NSN: 5331-00-828-9041
FSC Code: 5331
MPN: 8H0273

5331-00-599-0960 (8F9960)

NIIN: 00-599-0960
In stock
NSN: 5331-00-599-0960
FSC Code: 5331
MPN: 8F9960

5331-00-561-8344 (8F8733)

NIIN: 00-561-8344
In stock
NSN: 5331-00-561-8344
FSC Code: 5331
MPN: 8F8733

5331-00-828-9039 (8F9538)

NIIN: 00-828-9039
In stock
NSN: 5331-00-828-9039
FSC Code: 5331
MPN: 8F9538

5331-00-599-2189 (8F9516)

NIIN: 00-599-2189
In stock
NSN: 5331-00-599-2189
FSC Code: 5331
MPN: 8F9516

5331-00-663-5708 (8F6498)

NIIN: 00-663-5708
In stock
NSN: 5331-00-663-5708
FSC Code: 5331
MPN: 8F6498

5331-00-847-5805 (8F5900)

NIIN: 00-847-5805
In stock
NSN: 5331-00-847-5805
FSC Code: 5331
MPN: 8F5900

5331-00-847-5806 (8F4459)

NIIN: 00-847-5806
In stock
NSN: 5331-00-847-5806
FSC Code: 5331
MPN: 8F4459

5331-00-768-2342 (8F4469)

NIIN: 00-768-2342
In stock
NSN: 5331-00-768-2342
FSC Code: 5331
MPN: 8F4469

5331-00-599-2950 (8F2691)

NIIN: 00-599-2950
In stock
NSN: 5331-00-599-2950
FSC Code: 5331
MPN: 8F2691

5331-01-275-9425 (8F16)

NIIN: 01-275-9425
In stock
NSN: 5331-01-275-9425
FSC Code: 5331
MPN: 8F16

5331-00-851-0242 (8D173)

NIIN: 00-851-0242
In stock
NSN: 5331-00-851-0242
FSC Code: 5331
MPN: 8D173

5331-01-286-1677 (8D2714)

NIIN: 01-286-1677
In stock
NSN: 5331-01-286-1677
FSC Code: 5331
MPN: 8D2714

5331-00-953-1885 (8D173)

NIIN: 00-953-1885
In stock
NSN: 5331-00-953-1885
FSC Code: 5331
MPN: 8D173

5331-01-292-6888 (8C5196)

NIIN: 01-292-6888
In stock
NSN: 5331-01-292-6888
FSC Code: 5331
MPN: 8C5196

5331-01-275-9427 (8C0045)

NIIN: 01-275-9427
In stock
NSN: 5331-01-275-9427
FSC Code: 5331
MPN: 8C0045

5331-01-288-4535 (8C3078)

NIIN: 01-288-4535
In stock
NSN: 5331-01-288-4535
FSC Code: 5331
MPN: 8C3078

5331-01-396-7233 (ST7M258H466)

NIIN: 01-396-7233
In stock
NSN: 5331-01-396-7233
FSC Code: 5331
MPN: ST7M258H466

5331-01-275-9426 (8C0043)

NIIN: 01-275-9426
In stock
NSN: 5331-01-275-9426
FSC Code: 5331
MPN: 8C0043

5331-00-599-0125 (8B823036-1)

NIIN: 00-599-0125
In stock
NSN: 5331-00-599-0125
FSC Code: 5331
MPN: 8B8230361

5331-01-432-3092 (4604-12-12-0-SS)

NIIN: 01-432-3092
In stock
NSN: 5331-01-432-3092
FSC Code: 5331
MPN: 460412120SS

5331-01-380-0706 (ST7M258-325)

NIIN: 01-380-0706
In stock
NSN: 5331-01-380-0706
FSC Code: 5331
MPN: ST7M258325

5331-00-168-6138 (8A65M32)

NIIN: 00-168-6138
In stock
NSN: 5331-00-168-6138
FSC Code: 5331
MPN: 8A65M32

5331-00-168-6137 (8A65M31)

NIIN: 00-168-6137
In stock
NSN: 5331-00-168-6137
FSC Code: 5331
MPN: 8A65M31

5331-00-168-6130 (8A65A05)

NIIN: 00-168-6130
In stock
NSN: 5331-00-168-6130
FSC Code: 5331
MPN: 8A65A05