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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.

5331-01-598-4289 (PP259OR)

NIIN: 01-598-4289
In stock
NSN: 5331-01-598-4289
FSC Code: 5331
MPN: PP259OR

5331-01-598-3555 (09902219)

NIIN: 01-598-3555
In stock
NSN: 5331-01-598-3555
FSC Code: 5331
MPN: 09902219

5331-01-597-9372 (26KP758)

NIIN: 01-597-9372
In stock
NSN: 5331-01-597-9372
FSC Code: 5331
MPN: 26KP758

5331-01-598-7202 (3-6581 REF 5)

NIIN: 01-598-7202
In stock
NSN: 5331-01-598-7202
FSC Code: 5331
MPN: 36581REF5

5331-01-598-4744 (M25988/1-361)

NIIN: 01-598-4744
In stock
NSN: 5331-01-598-4744
FSC Code: 5331
MPN: M259881361

5331-01-597-9994 (949721)

NIIN: 01-597-9994
In stock
NSN: 5331-01-597-9994
FSC Code: 5331
MPN: 949721

5331-01-597-9862 (205710)

NIIN: 01-597-9862
In stock
NSN: 5331-01-597-9862
FSC Code: 5331
MPN: 205710

5331-01-598-9694 (10-00-1691-1298)

NIIN: 01-598-9694
In stock
NSN: 5331-01-598-9694
FSC Code: 5331
MPN: 100016911298

5331-01-598-2545 (5D18507-ITEM1)

NIIN: 01-598-2545
In stock
NSN: 5331-01-598-2545
FSC Code: 5331
MPN: 5D18507ITEM1

5331-01-598-2542 (5D18506-ITEM1)

NIIN: 01-598-2542
In stock
NSN: 5331-01-598-2542
FSC Code: 5331
MPN: 5D18506ITEM1

5331-01-597-8855 (26KP415)

NIIN: 01-597-8855
In stock
NSN: 5331-01-597-8855
FSC Code: 5331
MPN: 26KP415

5331-01-597-8834 (26KP848)

NIIN: 01-597-8834
In stock
NSN: 5331-01-597-8834
FSC Code: 5331
MPN: 26KP848

5331-01-598-0048 (5-X-1403)

NIIN: 01-598-0048
In stock
NSN: 5331-01-598-0048
FSC Code: 5331
MPN: 5X1403

5331-01-598-0009 (5-X-1362)

NIIN: 01-598-0009
In stock
NSN: 5331-01-598-0009
FSC Code: 5331
MPN: 5X1362

5331-01-597-9442 (250001-028)

NIIN: 01-597-9442
In stock
NSN: 5331-01-597-9442
FSC Code: 5331
MPN: 250001028

5331-01-597-8794 (250002-012)

NIIN: 01-597-8794
In stock
NSN: 5331-01-597-8794
FSC Code: 5331
MPN: 250002012

5331-01-598-7220 (5D16716-ITEM2)

NIIN: 01-598-7220
In stock
NSN: 5331-01-598-7220
FSC Code: 5331
MPN: 5D16716ITEM2

5331-01-598-4464 (6436128-01M1)

NIIN: 01-598-4464
In stock
NSN: 5331-01-598-4464
FSC Code: 5331
MPN: 643612801M1

5331-01-598-0911 (5151)

NIIN: 01-598-0911
In stock
NSN: 5331-01-598-0911
FSC Code: 5331
MPN: 5151

5331-01-598-0717 (2064630)

NIIN: 01-598-0717
In stock
NSN: 5331-01-598-0717
FSC Code: 5331
MPN: 2064630

5331-01-598-0013 (5-X-1405)

NIIN: 01-598-0013
In stock
NSN: 5331-01-598-0013
FSC Code: 5331
MPN: 5X1405

5331-01-597-7252 (8021627)

NIIN: 01-597-7252
In stock
NSN: 5331-01-597-7252
FSC Code: 5331
MPN: 8021627

5331-01-598-0912 (24899)

NIIN: 01-598-0912
In stock
NSN: 5331-01-598-0912
FSC Code: 5331
MPN: 24899

5331-01-597-9633 (1879756C1)

NIIN: 01-597-9633
In stock
NSN: 5331-01-597-9633
FSC Code: 5331
MPN: 1879756C1

5331-01-597-8788 (250001-024)

NIIN: 01-597-8788
In stock
NSN: 5331-01-597-8788
FSC Code: 5331
MPN: 250001024

5331-01-598-2543 (5D18506-ITEM2)

NIIN: 01-598-2543
In stock
NSN: 5331-01-598-2543
FSC Code: 5331
MPN: 5D18506ITEM2

5331-01-598-2536 (1632050-6916)

NIIN: 01-598-2536
In stock
NSN: 5331-01-598-2536
FSC Code: 5331
MPN: 16320506916

5331-01-597-8830 (3KK243)

NIIN: 01-597-8830
In stock
NSN: 5331-01-597-8830
FSC Code: 5331
MPN: 3KK243

5331-01-597-7174 (8752443)

NIIN: 01-597-7174
In stock
NSN: 5331-01-597-7174
FSC Code: 5331
MPN: 8752443

5331-01-597-6313 (24KP144)

NIIN: 01-597-6313
In stock
NSN: 5331-01-597-6313
FSC Code: 5331
MPN: 24KP144

5331-01-597-5728 (691-00920)

NIIN: 01-597-5728
In stock
NSN: 5331-01-597-5728
FSC Code: 5331
MPN: 69100920

5331-01-598-4076 (06B3640153)

NIIN: 01-598-4076
In stock
NSN: 5331-01-598-4076
FSC Code: 5331
MPN: 06B3640153

5331-01-598-4077 (063640150)

NIIN: 01-598-4077
In stock
NSN: 5331-01-598-4077
FSC Code: 5331
MPN: 063640150

5331-01-597-9108 (26KP759)

NIIN: 01-597-9108
In stock
NSN: 5331-01-597-9108
FSC Code: 5331
MPN: 26KP759

5331-01-597-4782 (40065562)

NIIN: 01-597-4782
In stock
NSN: 5331-01-597-4782
FSC Code: 5331
MPN: 40065562

5331-01-597-3902 (57321000)

NIIN: 01-597-3902
In stock
NSN: 5331-01-597-3902
FSC Code: 5331
MPN: 57321000

5331-01-597-3509 (57414000)

NIIN: 01-597-3509
In stock
NSN: 5331-01-597-3509
FSC Code: 5331
MPN: 57414000

5331-01-598-3090 (12J1049)

NIIN: 01-598-3090
In stock
NSN: 5331-01-598-3090
FSC Code: 5331
MPN: 12J1049

5331-01-598-2548 (6305E15-ITEM17)

NIIN: 01-598-2548
In stock
NSN: 5331-01-598-2548
FSC Code: 5331
MPN: 6305E15ITEM17

5331-01-598-0176 (2-111)

NIIN: 01-598-0176
In stock
NSN: 5331-01-598-0176
FSC Code: 5331
MPN: 2111

5331-01-597-9210 (26KP760)

NIIN: 01-597-9210
In stock
NSN: 5331-01-597-9210
FSC Code: 5331
MPN: 26KP760

5331-01-597-8756 (N 903 168 02)

NIIN: 01-597-8756
In stock
NSN: 5331-01-597-8756
FSC Code: 5331
MPN: N90316802

5331-01-597-3687 (0237407)

NIIN: 01-597-3687
In stock
NSN: 5331-01-597-3687
FSC Code: 5331
MPN: 0237407

5331-01-597-3203 (5233T56)

NIIN: 01-597-3203
In stock
NSN: 5331-01-597-3203
FSC Code: 5331
MPN: 5233T56

5331-01-597-2379 (320943)

NIIN: 01-597-2379
In stock
NSN: 5331-01-597-2379
FSC Code: 5331
MPN: 320943

5331-01-597-2263 (P528247)

NIIN: 01-597-2263
In stock
NSN: 5331-01-597-2263
FSC Code: 5331
MPN: P528247

5331-01-597-2146 (504-RV)

NIIN: 01-597-2146
In stock
NSN: 5331-01-597-2146
FSC Code: 5331
MPN: 504RV

5331-01-598-0716 (2177567)

NIIN: 01-598-0716
In stock
NSN: 5331-01-598-0716
FSC Code: 5331
MPN: 2177567