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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.

5331-01-279-2243 (0065227.35.63)

NIIN: 01-279-2243
In stock
NSN: 5331-01-279-2243
FSC Code: 5331
MPN: 00652273563

5331-00-248-9344 (0065218.35.62)

NIIN: 00-248-9344
In stock
NSN: 5331-00-248-9344
FSC Code: 5331
MPN: 00652183562

5331-01-031-1328 (0065225.35.63)

NIIN: 01-031-1328
In stock
NSN: 5331-01-031-1328
FSC Code: 5331
MPN: 00652253563

5331-00-173-3023 (0065232.53.68)

NIIN: 00-173-3023
In stock
NSN: 5331-00-173-3023
FSC Code: 5331
MPN: 00652325368

5331-00-776-8001 (0065212.26.63)

NIIN: 00-776-8001
In stock
NSN: 5331-00-776-8001
FSC Code: 5331
MPN: 00652122663

5331-01-280-7500 (0065224.35.63)

NIIN: 01-280-7500
In stock
NSN: 5331-01-280-7500
FSC Code: 5331
MPN: 00652243563

5331-01-094-0371 (0065229.53.63)

NIIN: 01-094-0371
In stock
NSN: 5331-01-094-0371
FSC Code: 5331
MPN: 00652295363

5331-01-280-7504 (0065236.53.63)

NIIN: 01-280-7504
In stock
NSN: 5331-01-280-7504
FSC Code: 5331
MPN: 00652365363

5331-01-279-2238 (0065236.53.69)

NIIN: 01-279-2238
In stock
NSN: 5331-01-279-2238
FSC Code: 5331
MPN: 00652365369

5331-00-251-9365 (0065238.53.60)

NIIN: 00-251-9365
In stock
NSN: 5331-00-251-9365
FSC Code: 5331
MPN: 00652385360

5331-00-584-1186 (0065234.53.68)

NIIN: 00-584-1186
In stock
NSN: 5331-00-584-1186
FSC Code: 5331
MPN: 00652345368

5331-00-451-6543 (0065234.53.63)

NIIN: 00-451-6543
In stock
NSN: 5331-00-451-6543
FSC Code: 5331
MPN: 00652345363

5331-00-252-6054 (0065234-53-60)

NIIN: 00-252-6054
In stock
NSN: 5331-00-252-6054
FSC Code: 5331
MPN: 00652345360

5331-01-063-3798 (0065244.53.60)

NIIN: 01-063-3798
In stock
NSN: 5331-01-063-3798
FSC Code: 5331
MPN: 00652445360

5331-01-279-1178 (0065243.53.63)

NIIN: 01-279-1178
In stock
NSN: 5331-01-279-1178
FSC Code: 5331
MPN: 00652435363

5331-01-279-2242 (0065235.53.63)

NIIN: 01-279-2242
In stock
NSN: 5331-01-279-2242
FSC Code: 5331
MPN: 00652355363

5331-01-181-0584 (0065235.53.68)

NIIN: 01-181-0584
In stock
NSN: 5331-01-181-0584
FSC Code: 5331
MPN: 00652355368

5331-00-910-0982 (0065242-53-63)

NIIN: 00-910-0982
In stock
NSN: 5331-00-910-0982
FSC Code: 5331
MPN: 00652425363

5331-01-279-1173 (0065238.53.63)

NIIN: 01-279-1173
In stock
NSN: 5331-01-279-1173
FSC Code: 5331
MPN: 00652385363

5331-01-279-1166 (00652547063)

NIIN: 01-279-1166
In stock
NSN: 5331-01-279-1166
FSC Code: 5331
MPN: 00652547063

5331-01-279-2239 (0065249.53.63)

NIIN: 01-279-2239
In stock
NSN: 5331-01-279-2239
FSC Code: 5331
MPN: 00652495363

5331-01-279-1172 (0065245.53.63)

NIIN: 01-279-1172
In stock
NSN: 5331-01-279-1172
FSC Code: 5331
MPN: 00652455363

5331-00-251-9375 (0065246.53.63)

NIIN: 00-251-9375
In stock
NSN: 5331-00-251-9375
FSC Code: 5331
MPN: 00652465363

5331-00-599-0620 (0065262.70.63)

NIIN: 00-599-0620
In stock
NSN: 5331-00-599-0620
FSC Code: 5331
MPN: 00652627063

5331-01-279-0697 (0065273.70.63)

NIIN: 01-279-0697
In stock
NSN: 5331-01-279-0697
FSC Code: 5331
MPN: 00652737063

5331-01-284-1284 (0065250.53.63)

NIIN: 01-284-1284
In stock
NSN: 5331-01-284-1284
FSC Code: 5331
MPN: 00652505363

5331-01-279-2240 (0065274.70.63)

NIIN: 01-279-2240
In stock
NSN: 5331-01-279-2240
FSC Code: 5331
MPN: 00652747063

5331-00-463-0326 (0065268.70.63)

NIIN: 00-463-0326
In stock
NSN: 5331-00-463-0326
FSC Code: 5331
MPN: 00652687063

5331-00-420-9624 (0065266.70.60)

NIIN: 00-420-9624
In stock
NSN: 5331-00-420-9624
FSC Code: 5331
MPN: 00652667060

5331-00-292-0788 (0065288.70.60)

NIIN: 00-292-0788
In stock
NSN: 5331-00-292-0788
FSC Code: 5331
MPN: 00652887060

5331-01-181-5054 (00653044.3.63)

NIIN: 01-181-5054
In stock
NSN: 5331-01-181-5054
FSC Code: 5331
MPN: 00653044363

5331-01-280-7501 (0065276.70.63)

NIIN: 01-280-7501
In stock
NSN: 5331-01-280-7501
FSC Code: 5331
MPN: 00652767063

5331-01-187-4893 (00653444.8.68)

NIIN: 01-187-4893
In stock
NSN: 5331-01-187-4893
FSC Code: 5331
MPN: 00653444868

5331-01-181-2508 (00653348.0.60)

NIIN: 01-181-2508
In stock
NSN: 5331-01-181-2508
FSC Code: 5331
MPN: 00653348060

5331-00-252-6048 (006-53910)

NIIN: 00-252-6048
In stock
NSN: 5331-00-252-6048
FSC Code: 5331
MPN: 00653910

5331-00-162-5688 (00-65471)

NIIN: 00-162-5688
In stock
NSN: 5331-00-162-5688
FSC Code: 5331
MPN: 0065471

5331-01-181-2509 (00653486.6.63)

NIIN: 01-181-2509
In stock
NSN: 5331-01-181-2509
FSC Code: 5331
MPN: 00653486663

5331-01-279-1167 (00653480.7.68)

NIIN: 01-279-1167
In stock
NSN: 5331-01-279-1167
FSC Code: 5331
MPN: 00653480768

5331-01-279-2241 (00655659.7.63)

NIIN: 01-279-2241
In stock
NSN: 5331-01-279-2241
FSC Code: 5331
MPN: 00655659763

5331-00-165-1964 (00655113368)

NIIN: 00-165-1964
In stock
NSN: 5331-00-165-1964
FSC Code: 5331
MPN: 00655113368

5331-00-869-3638 (00655177363)

NIIN: 00-869-3638
In stock
NSN: 5331-00-869-3638
FSC Code: 5331
MPN: 00655177363

5331-00-165-1954 (00655082368)

NIIN: 00-165-1954
In stock
NSN: 5331-00-165-1954
FSC Code: 5331
MPN: 00655082368

5331-01-279-1177 (00655481.7.63)

NIIN: 01-279-1177
In stock
NSN: 5331-01-279-1177
FSC Code: 5331
MPN: 00655481763

5331-01-158-5344 (006-53910)

NIIN: 01-158-5344
In stock
NSN: 5331-01-158-5344
FSC Code: 5331
MPN: 00653910

5331-01-053-1715 (00655129363)

NIIN: 01-053-1715
In stock
NSN: 5331-01-053-1715
FSC Code: 5331
MPN: 00655129363

5331-00-167-5145 (00655A770-262)

NIIN: 00-167-5145
In stock
NSN: 5331-00-167-5145
FSC Code: 5331
MPN: 00655A770262

5331-01-278-9494 (0066269.70.68)

NIIN: 01-278-9494
In stock
NSN: 5331-01-278-9494
FSC Code: 5331
MPN: 00662697068

5331-01-292-0159 (00667)

NIIN: 01-292-0159
In stock
NSN: 5331-01-292-0159
FSC Code: 5331
MPN: 00667