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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.

5331-01-263-0187 (99-4685-136)

NIIN: 01-263-0187
In stock
NSN: 5331-01-263-0187
FSC Code: 5331
MPN: 994685136

5331-01-263-0189 (99-4685-151)

NIIN: 01-263-0189
In stock
NSN: 5331-01-263-0189
FSC Code: 5331
MPN: 994685151

5331-01-138-7754 (99-4685-149)

NIIN: 01-138-7754
In stock
NSN: 5331-01-138-7754
FSC Code: 5331
MPN: 994685149

5331-01-263-0194 (99-4685-245)

NIIN: 01-263-0194
In stock
NSN: 5331-01-263-0194
FSC Code: 5331
MPN: 994685245

5331-01-263-0184 (99-4685-138)

NIIN: 01-263-0184
In stock
NSN: 5331-01-263-0184
FSC Code: 5331
MPN: 994685138

5331-01-263-0191 (99-4685-141)

NIIN: 01-263-0191
In stock
NSN: 5331-01-263-0191
FSC Code: 5331
MPN: 994685141

5331-00-232-1003 (99-4685-131)

NIIN: 00-232-1003
In stock
NSN: 5331-00-232-1003
FSC Code: 5331
MPN: 994685131

5331-01-263-0185 (99-4685-115)

NIIN: 01-263-0185
In stock
NSN: 5331-01-263-0185
FSC Code: 5331
MPN: 994685115

5331-00-123-7675 (99-4684-16)

NIIN: 00-123-7675
In stock
NSN: 5331-00-123-7675
FSC Code: 5331
MPN: 99468416

5331-00-617-4765 (99-4685-016)

NIIN: 00-617-4765
In stock
NSN: 5331-00-617-4765
FSC Code: 5331
MPN: 994685016

5331-01-263-0195 (99-4685-014)

NIIN: 01-263-0195
In stock
NSN: 5331-01-263-0195
FSC Code: 5331
MPN: 994685014

5331-00-152-4841 (99-4601-500)

NIIN: 00-152-4841
In stock
NSN: 5331-00-152-4841
FSC Code: 5331
MPN: 994601500

5331-01-007-8797 (99-4601-247)

NIIN: 01-007-8797
In stock
NSN: 5331-01-007-8797
FSC Code: 5331
MPN: 994601247

5331-00-153-1030 (99-4601-241)

NIIN: 00-153-1030
In stock
NSN: 5331-00-153-1030
FSC Code: 5331
MPN: 994601241

5331-00-155-4698 (99-4601-240)

NIIN: 00-155-4698
In stock
NSN: 5331-00-155-4698
FSC Code: 5331
MPN: 994601240

5331-01-007-1621 (99-4601-038)

NIIN: 01-007-1621
In stock
NSN: 5331-01-007-1621
FSC Code: 5331
MPN: 994601038

5331-00-757-7597 (99-4601-126)

NIIN: 00-757-7597
In stock
NSN: 5331-00-757-7597
FSC Code: 5331
MPN: 994601126

5331-01-316-7572 (99-4346-17)

NIIN: 01-316-7572
In stock
NSN: 5331-01-316-7572
FSC Code: 5331
MPN: 99434617

5331-01-032-1125 (99-4347-02)

NIIN: 01-032-1125
In stock
NSN: 5331-01-032-1125
FSC Code: 5331
MPN: 99434702

5331-00-400-8340 (99-4346-26)

NIIN: 00-400-8340
In stock
NSN: 5331-00-400-8340
FSC Code: 5331
MPN: 99434626

5331-00-243-7505 (99-4347-28)

NIIN: 00-243-7505
In stock
NSN: 5331-00-243-7505
FSC Code: 5331
MPN: 99434728

5331-00-104-9472 (99-4346-19)

NIIN: 00-104-9472
In stock
NSN: 5331-00-104-9472
FSC Code: 5331
MPN: 99434619

5331-00-111-7840 (99-4346-34)

NIIN: 00-111-7840
In stock
NSN: 5331-00-111-7840
FSC Code: 5331
MPN: 99434634

5331-00-105-1209 (99-4346-18)

NIIN: 00-105-1209
In stock
NSN: 5331-00-105-1209
FSC Code: 5331
MPN: 99434618

5331-01-268-5776 (99-4346-158)

NIIN: 01-268-5776
In stock
NSN: 5331-01-268-5776
FSC Code: 5331
MPN: 994346158

5331-00-105-1208 (99-4346-13)

NIIN: 00-105-1208
In stock
NSN: 5331-00-105-1208
FSC Code: 5331
MPN: 99434613

5331-01-032-3542 (99-4346-14)

NIIN: 01-032-3542
In stock
NSN: 5331-01-032-3542
FSC Code: 5331
MPN: 99434614

5331-00-111-7841 (99-4346-134)

NIIN: 00-111-7841
In stock
NSN: 5331-00-111-7841
FSC Code: 5331
MPN: 994346134

5331-00-999-4247 (99-4113-16)

NIIN: 00-999-4247
In stock
NSN: 5331-00-999-4247
FSC Code: 5331
MPN: 99411316

5331-00-889-8802 (99-4346-135)

NIIN: 00-889-8802
In stock
NSN: 5331-00-889-8802
FSC Code: 5331
MPN: 994346135

5331-00-104-7721 (99-4346-119)

NIIN: 00-104-7721
In stock
NSN: 5331-00-104-7721
FSC Code: 5331
MPN: 994346119

5331-00-913-4018 (99-4113-118)

NIIN: 00-913-4018
In stock
NSN: 5331-00-913-4018
FSC Code: 5331
MPN: 994113118

5331-00-913-4021 (99-4113-232)

NIIN: 00-913-4021
In stock
NSN: 5331-00-913-4021
FSC Code: 5331
MPN: 994113232

5331-00-941-3343 (99-4036)

NIIN: 00-941-3343
In stock
NSN: 5331-00-941-3343
FSC Code: 5331
MPN: 994036

5331-01-392-1814 (5-180L1120-70)

NIIN: 01-392-1814
In stock
NSN: 5331-01-392-1814
FSC Code: 5331
MPN: 5180L112070

5331-00-941-3344 (99-4037)

NIIN: 00-941-3344
In stock
NSN: 5331-00-941-3344
FSC Code: 5331
MPN: 994037

5331-01-521-6226 (5-180V747-75)

NIIN: 01-521-6226
In stock
NSN: 5331-01-521-6226
FSC Code: 5331
MPN: 5180V74775

5331-01-283-4146 (993TO45523PP)

NIIN: 01-283-4146
In stock
NSN: 5331-01-283-4146
FSC Code: 5331
MPN: 993TO45523PP

5331-00-925-7832 (99-3743-6)

NIIN: 00-925-7832
In stock
NSN: 5331-00-925-7832
FSC Code: 5331
MPN: 9937436

5331-01-094-7307 (99-3701-39)

NIIN: 01-094-7307
In stock
NSN: 5331-01-094-7307
FSC Code: 5331
MPN: 99370139

5331-01-330-8339 (99-3518-502)

NIIN: 01-330-8339
In stock
NSN: 5331-01-330-8339
FSC Code: 5331
MPN: 993518502

5331-00-003-0572 (99-3518-507)

NIIN: 00-003-0572
In stock
NSN: 5331-00-003-0572
FSC Code: 5331
MPN: 993518507

5331-01-330-8341 (99-3518-500)

NIIN: 01-330-8341
In stock
NSN: 5331-01-330-8341
FSC Code: 5331
MPN: 993518500

5331-01-330-8340 (99-3518-503)

NIIN: 01-330-8340
In stock
NSN: 5331-01-330-8340
FSC Code: 5331
MPN: 993518503

5331-00-493-6724 (99-3518-228)

NIIN: 00-493-6724
In stock
NSN: 5331-00-493-6724
FSC Code: 5331
MPN: 993518228

5331-01-077-8509 (99-3518-18)

NIIN: 01-077-8509
In stock
NSN: 5331-01-077-8509
FSC Code: 5331
MPN: 99351818

5331-00-005-6019 (99-3205)

NIIN: 00-005-6019
In stock
NSN: 5331-00-005-6019
FSC Code: 5331
MPN: 993205

5331-01-077-8510 (99-2973-21)

NIIN: 01-077-8510
In stock
NSN: 5331-01-077-8510
FSC Code: 5331
MPN: 99297321