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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.

5331-00-253-4846 (S9005E9)

NIIN: 00-253-4846
In stock
NSN: 5331-00-253-4846
FSC Code: 5331
MPN: S9005E9

5331-00-492-6357 (S9005G6)

NIIN: 00-492-6357
In stock
NSN: 5331-00-492-6357
FSC Code: 5331
MPN: S9005G6

5331-01-270-1760 (S8990-740)

NIIN: 01-270-1760
In stock
NSN: 5331-01-270-1760
FSC Code: 5331
MPN: S8990740

5331-01-244-1085 (S8990-704)

NIIN: 01-244-1085
In stock
NSN: 5331-01-244-1085
FSC Code: 5331
MPN: S8990704

5331-01-242-7459 (S8990-741)

NIIN: 01-242-7459
In stock
NSN: 5331-01-242-7459
FSC Code: 5331
MPN: S8990741

5331-01-126-2646 (S8990-700)

NIIN: 01-126-2646
In stock
NSN: 5331-01-126-2646
FSC Code: 5331
MPN: S8990700

5331-01-219-4179 (S8990-617)

NIIN: 01-219-4179
In stock
NSN: 5331-01-219-4179
FSC Code: 5331
MPN: S8990617

5331-01-088-8964 (S8990-656)

NIIN: 01-088-8964
In stock
NSN: 5331-01-088-8964
FSC Code: 5331
MPN: S8990656

5331-00-245-7200 (S8990-612)

NIIN: 00-245-7200
In stock
NSN: 5331-00-245-7200
FSC Code: 5331
MPN: S8990612

5331-00-240-4413 (S8990-597)

NIIN: 00-240-4413
In stock
NSN: 5331-00-240-4413
FSC Code: 5331
MPN: S8990597

5331-00-245-7164 (S8990-595)

NIIN: 00-245-7164
In stock
NSN: 5331-00-245-7164
FSC Code: 5331
MPN: S8990595

5331-01-018-2820 (S8990-594)

NIIN: 01-018-2820
In stock
NSN: 5331-01-018-2820
FSC Code: 5331
MPN: S8990594

5331-00-111-5531 (S8990-580)

NIIN: 00-111-5531
In stock
NSN: 5331-00-111-5531
FSC Code: 5331
MPN: S8990580

5331-00-143-8403 (S8990-582)

NIIN: 00-143-8403
In stock
NSN: 5331-00-143-8403
FSC Code: 5331
MPN: S8990582

5331-01-045-2934 (S8990-588)

NIIN: 01-045-2934
In stock
NSN: 5331-01-045-2934
FSC Code: 5331
MPN: S8990588

5331-00-526-2024 (S8990-590)

NIIN: 00-526-2024
In stock
NSN: 5331-00-526-2024
FSC Code: 5331
MPN: S8990590

5331-01-027-2020 (S8990-576)

NIIN: 01-027-2020
In stock
NSN: 5331-01-027-2020
FSC Code: 5331
MPN: S8990576

5331-01-147-9799 (S8990-589)

NIIN: 01-147-9799
In stock
NSN: 5331-01-147-9799
FSC Code: 5331
MPN: S8990589

5331-00-549-8279 (S8990-587)

NIIN: 00-549-8279
In stock
NSN: 5331-00-549-8279
FSC Code: 5331
MPN: S8990587

5331-00-111-4208 (S8990-577)

NIIN: 00-111-4208
In stock
NSN: 5331-00-111-4208
FSC Code: 5331
MPN: S8990577

5331-01-232-1483 (S8990-571)

NIIN: 01-232-1483
In stock
NSN: 5331-01-232-1483
FSC Code: 5331
MPN: S8990571

5331-00-220-2946 (S8990-585)

NIIN: 00-220-2946
In stock
NSN: 5331-00-220-2946
FSC Code: 5331
MPN: S8990585

5331-00-524-0732 (S8990-572)

NIIN: 00-524-0732
In stock
NSN: 5331-00-524-0732
FSC Code: 5331
MPN: S8990572

5331-01-205-9215 (S8990-575)

NIIN: 01-205-9215
In stock
NSN: 5331-01-205-9215
FSC Code: 5331
MPN: S8990575

5331-00-809-0782 (S8990-521)

NIIN: 00-809-0782
In stock
NSN: 5331-00-809-0782
FSC Code: 5331
MPN: S8990521

5331-00-951-2494 (S8990-33)

NIIN: 00-951-2494
In stock
NSN: 5331-00-951-2494
FSC Code: 5331
MPN: S899033

5331-01-057-9224 (S8990-567)

NIIN: 01-057-9224
In stock
NSN: 5331-01-057-9224
FSC Code: 5331
MPN: S8990567

5331-00-851-1211 (S8990-541)

NIIN: 00-851-1211
In stock
NSN: 5331-00-851-1211
FSC Code: 5331
MPN: S8990541

5331-00-051-7161 (S8990-559)

NIIN: 00-051-7161
In stock
NSN: 5331-00-051-7161
FSC Code: 5331
MPN: S8990559

5331-00-050-1685 (S8990-558)

NIIN: 00-050-1685
In stock
NSN: 5331-00-050-1685
FSC Code: 5331
MPN: S8990558

5331-00-406-0828 (S8990-542)

NIIN: 00-406-0828
In stock
NSN: 5331-00-406-0828
FSC Code: 5331
MPN: S8990542

5331-00-857-4420 (S8990-550)

NIIN: 00-857-4420
In stock
NSN: 5331-00-857-4420
FSC Code: 5331
MPN: S8990550

5331-00-857-4421 (S8990-528)

NIIN: 00-857-4421
In stock
NSN: 5331-00-857-4421
FSC Code: 5331
MPN: S8990528

5331-00-983-9260 (S8990-44)

NIIN: 00-983-9260
In stock
NSN: 5331-00-983-9260
FSC Code: 5331
MPN: S899044

5331-00-952-1889 (S8990-267)

NIIN: 00-952-1889
In stock
NSN: 5331-00-952-1889
FSC Code: 5331
MPN: S8990267

5331-00-857-4425 (S8990-524)

NIIN: 00-857-4425
In stock
NSN: 5331-00-857-4425
FSC Code: 5331
MPN: S8990524

5331-00-860-2390 (S8990-511)

NIIN: 00-860-2390
In stock
NSN: 5331-00-860-2390
FSC Code: 5331
MPN: S8990511

5331-00-835-1686 (S8990-265)

NIIN: 00-835-1686
In stock
NSN: 5331-00-835-1686
FSC Code: 5331
MPN: S8990265

5331-00-168-6222 (S8990-261P)

NIIN: 00-168-6222
In stock
NSN: 5331-00-168-6222
FSC Code: 5331
MPN: S8990261P

5331-00-732-3575 (S8990-24)

NIIN: 00-732-3575
In stock
NSN: 5331-00-732-3575
FSC Code: 5331
MPN: S899024

5331-01-020-5272 (S8990-249)

NIIN: 01-020-5272
In stock
NSN: 5331-01-020-5272
FSC Code: 5331
MPN: S8990249

5331-01-109-6067 (S8990-258)

NIIN: 01-109-6067
In stock
NSN: 5331-01-109-6067
FSC Code: 5331
MPN: S8990258

5331-00-519-7667 (S8990-257)

NIIN: 00-519-7667
In stock
NSN: 5331-00-519-7667
FSC Code: 5331
MPN: S8990257

5331-00-104-7576 (S8990-256)

NIIN: 00-104-7576
In stock
NSN: 5331-00-104-7576
FSC Code: 5331
MPN: S8990256

5331-00-023-4452 (S8990-212)

NIIN: 00-023-4452
In stock
NSN: 5331-00-023-4452
FSC Code: 5331
MPN: S8990212

5331-01-252-3122 (S8990-251)

NIIN: 01-252-3122
In stock
NSN: 5331-01-252-3122
FSC Code: 5331
MPN: S8990251

5331-00-881-8455 (S8990-227)

NIIN: 00-881-8455
In stock
NSN: 5331-00-881-8455
FSC Code: 5331
MPN: S8990227

5331-00-245-7202 (S8990-217)

NIIN: 00-245-7202
In stock
NSN: 5331-00-245-7202
FSC Code: 5331
MPN: S8990217