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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.

5331-00-250-1162 (5-178N602-70)

NIIN: 00-250-1162
In stock
NSN: 5331-00-250-1162
FSC Code: 5331
MPN: 5178N60270

5331-01-562-7787 (19038)

NIIN: 01-562-7787
In stock
NSN: 5331-01-562-7787
FSC Code: 5331
MPN: 19038

5331-01-231-5924 (5-172N602-70)

NIIN: 01-231-5924
In stock
NSN: 5331-01-231-5924
FSC Code: 5331
MPN: 5172N60270

5331-01-150-7740 (5-172S604-70)

NIIN: 01-150-7740
In stock
NSN: 5331-01-150-7740
FSC Code: 5331
MPN: 5172S60470

5331-01-554-0878 (19-01-099)

NIIN: 01-554-0878
In stock
NSN: 5331-01-554-0878
FSC Code: 5331
MPN: 1901099

5331-01-554-0898 (19-01-040)

NIIN: 01-554-0898
In stock
NSN: 5331-01-554-0898
FSC Code: 5331
MPN: 1901040

5331-01-554-0896 (19-01-016)

NIIN: 01-554-0896
In stock
NSN: 5331-01-554-0896
FSC Code: 5331
MPN: 1901016

5331-01-201-0166 (516F0R525-SN-1)

NIIN: 01-201-0166
In stock
NSN: 5331-01-201-0166
FSC Code: 5331
MPN: 516F0R525SN1

5331-00-421-4805 (5-1696)

NIIN: 00-421-4805
In stock
NSN: 5331-00-421-4805
FSC Code: 5331
MPN: 51696

5331-01-533-1430 (19-004-2193)

NIIN: 01-533-1430
In stock
NSN: 5331-01-533-1430
FSC Code: 5331
MPN: 190042193

5331-01-532-1836 (19-003-6622)

NIIN: 01-532-1836
In stock
NSN: 5331-01-532-1836
FSC Code: 5331
MPN: 190036622

5331-01-509-0840 (19-004-1751)

NIIN: 01-509-0840
In stock
NSN: 5331-01-509-0840
FSC Code: 5331
MPN: 190041751

5331-01-532-1745 (19-003-6621)

NIIN: 01-532-1745
In stock
NSN: 5331-01-532-1745
FSC Code: 5331
MPN: 190036621

5331-01-471-7468 (19-004-1752)

NIIN: 01-471-7468
In stock
NSN: 5331-01-471-7468
FSC Code: 5331
MPN: 190041752

5331-01-439-2544 (19-003-7363)

NIIN: 01-439-2544
In stock
NSN: 5331-01-439-2544
FSC Code: 5331
MPN: 190037363

5331-01-532-1770 (19-003-6620)

NIIN: 01-532-1770
In stock
NSN: 5331-01-532-1770
FSC Code: 5331
MPN: 190036620

5331-01-535-1192 (19-00-17347-E6434)

NIIN: 01-535-1192
In stock
NSN: 5331-01-535-1192
FSC Code: 5331
MPN: 190017347E6434

5331-01-413-7826 (19-00-13782-S6305)

NIIN: 01-413-7826
In stock
NSN: 5331-01-413-7826
FSC Code: 5331
MPN: 190013782S6305

5331-01-535-1194 (19-00-17348-E6434)

NIIN: 01-535-1194
In stock
NSN: 5331-01-535-1194
FSC Code: 5331
MPN: 190017348E6434

5331-01-368-3928 (19000-53610-6)

NIIN: 01-368-3928
In stock
NSN: 5331-01-368-3928
FSC Code: 5331
MPN: 19000536106

5331-01-352-4320 (190.593.606)

NIIN: 01-352-4320
In stock
NSN: 5331-01-352-4320
FSC Code: 5331
MPN: 190593606

5331-01-352-1970 (190.593.609)

NIIN: 01-352-1970
In stock
NSN: 5331-01-352-1970
FSC Code: 5331
MPN: 190593609

5331-01-353-9395 (190.593.932)

NIIN: 01-353-9395
In stock
NSN: 5331-01-353-9395
FSC Code: 5331
MPN: 190593932

5331-01-550-3664 (G547-0002-190000-32-12CP)

NIIN: 01-550-3664
In stock
NSN: 5331-01-550-3664
FSC Code: 5331
MPN: G54700021900003212CP

5331-01-352-4311 (190.593.779)

NIIN: 01-352-4311
In stock
NSN: 5331-01-352-4311
FSC Code: 5331
MPN: 190593779

5331-01-352-4312 (190.593.778)

NIIN: 01-352-4312
In stock
NSN: 5331-01-352-4312
FSC Code: 5331
MPN: 190593778

5331-01-352-4313 (190.593.432)

NIIN: 01-352-4313
In stock
NSN: 5331-01-352-4313
FSC Code: 5331
MPN: 190593432

5331-01-352-4319 (190.593.601)

NIIN: 01-352-4319
In stock
NSN: 5331-01-352-4319
FSC Code: 5331
MPN: 190593601

5331-01-449-5201 (190.593.511)

NIIN: 01-449-5201
In stock
NSN: 5331-01-449-5201
FSC Code: 5331
MPN: 190593511

5331-01-352-4317 (190.593.450)

NIIN: 01-352-4317
In stock
NSN: 5331-01-352-4317
FSC Code: 5331
MPN: 190593450

5331-01-353-9386 (190.593.366)

NIIN: 01-353-9386
In stock
NSN: 5331-01-353-9386
FSC Code: 5331
MPN: 190593366

5331-01-352-4326 (190.593.604)

NIIN: 01-352-4326
In stock
NSN: 5331-01-352-4326
FSC Code: 5331
MPN: 190593604

5331-01-449-5198 (190.593.163)

NIIN: 01-449-5198
In stock
NSN: 5331-01-449-5198
FSC Code: 5331
MPN: 190593163

5331-01-474-6079 (190.593.374)

NIIN: 01-474-6079
In stock
NSN: 5331-01-474-6079
FSC Code: 5331
MPN: 190593374

5331-01-449-5627 (190.593.168)

NIIN: 01-449-5627
In stock
NSN: 5331-01-449-5627
FSC Code: 5331
MPN: 190593168

5331-01-352-4314 (190.593.447)

NIIN: 01-352-4314
In stock
NSN: 5331-01-352-4314
FSC Code: 5331
MPN: 190593447

5331-01-352-4325 (190.593.444)

NIIN: 01-352-4325
In stock
NSN: 5331-01-352-4325
FSC Code: 5331
MPN: 190593444

5331-01-352-4315 (19-.593.610)

NIIN: 01-352-4315
In stock
NSN: 5331-01-352-4315
FSC Code: 5331
MPN: 19593610

5331-01-353-9396 (190.593.091)

NIIN: 01-353-9396
In stock
NSN: 5331-01-353-9396
FSC Code: 5331
MPN: 190593091

5331-01-352-4318 (190.593.449)

NIIN: 01-352-4318
In stock
NSN: 5331-01-352-4318
FSC Code: 5331
MPN: 190593449

5331-01-352-4316 (190.593.443)

NIIN: 01-352-4316
In stock
NSN: 5331-01-352-4316
FSC Code: 5331
MPN: 190593443

5331-01-432-9302 (19.2X3)

NIIN: 01-432-9302
In stock
NSN: 5331-01-432-9302
FSC Code: 5331
MPN: 192X3

5331-01-425-5414 (PL19XL5353458CR)

NIIN: 01-425-5414
In stock
NSN: 5331-01-425-5414
FSC Code: 5331
MPN: PL19XL5353458CR

5331-01-440-8203 (18X2.5)

NIIN: 01-440-8203
In stock
NSN: 5331-01-440-8203
FSC Code: 5331
MPN: 18X25

5331-01-359-2155 (18X2.5)

NIIN: 01-359-2155
In stock
NSN: 5331-01-359-2155
FSC Code: 5331
MPN: 18X25

5331-01-096-8825 (516-5343916-F23)

NIIN: 01-096-8825
In stock
NSN: 5331-01-096-8825
FSC Code: 5331
MPN: 5165343916F23

5331-01-008-0422 (516323-18)

NIIN: 01-008-0422
In stock
NSN: 5331-01-008-0422
FSC Code: 5331
MPN: 51632318

5331-01-463-2359 (18AR43)

NIIN: 01-463-2359
In stock
NSN: 5331-01-463-2359
FSC Code: 5331
MPN: 18AR43