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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.

5331-00-492-0358 (4400891-0074)

NIIN: 00-492-0358
In stock
NSN: 5331-00-492-0358
FSC Code: 5331
MPN: 44008910074

5331-01-266-2499 (4400961-0110)

NIIN: 01-266-2499
In stock
NSN: 5331-01-266-2499
FSC Code: 5331
MPN: 44009610110

5331-00-103-9790 (4400891-1180)

NIIN: 00-103-9790
In stock
NSN: 5331-00-103-9790
FSC Code: 5331
MPN: 44008911180

5331-00-126-7652 (4400891-0244)

NIIN: 00-126-7652
In stock
NSN: 5331-00-126-7652
FSC Code: 5331
MPN: 44008910244

5331-00-080-1553 (4400871-1360)

NIIN: 00-080-1553
In stock
NSN: 5331-00-080-1553
FSC Code: 5331
MPN: 44008711360

5331-01-260-8956 (4400961-0100)

NIIN: 01-260-8956
In stock
NSN: 5331-01-260-8956
FSC Code: 5331
MPN: 44009610100

5331-01-217-3254 (4400891-1194)

NIIN: 01-217-3254
In stock
NSN: 5331-01-217-3254
FSC Code: 5331
MPN: 44008911194

5331-01-320-2369 (4400891-0154)

NIIN: 01-320-2369
In stock
NSN: 5331-01-320-2369
FSC Code: 5331
MPN: 44008910154

5331-00-088-6126 (4400871-2130)

NIIN: 00-088-6126
In stock
NSN: 5331-00-088-6126
FSC Code: 5331
MPN: 44008712130

5331-00-892-4304 (4400871-2200)

NIIN: 00-892-4304
In stock
NSN: 5331-00-892-4304
FSC Code: 5331
MPN: 44008712200

5331-00-909-3267 (4400872-0110)

NIIN: 00-909-3267
In stock
NSN: 5331-00-909-3267
FSC Code: 5331
MPN: 44008720110

5331-00-007-1598 (4400891-0064)

NIIN: 00-007-1598
In stock
NSN: 5331-00-007-1598
FSC Code: 5331
MPN: 44008910064

5331-01-252-2414 (4400871-1340)

NIIN: 01-252-2414
In stock
NSN: 5331-01-252-2414
FSC Code: 5331
MPN: 44008711340

5331-01-255-1850 (4400871-0150)

NIIN: 01-255-1850
In stock
NSN: 5331-01-255-1850
FSC Code: 5331
MPN: 44008710150

5331-01-042-8240 (440-0871-1150)

NIIN: 01-042-8240
In stock
NSN: 5331-01-042-8240
FSC Code: 5331
MPN: 44008711150

5331-01-043-1416 (440-0871-1140)

NIIN: 01-043-1416
In stock
NSN: 5331-01-043-1416
FSC Code: 5331
MPN: 44008711140

5331-00-399-1087 (4400871-1340)

NIIN: 00-399-1087
In stock
NSN: 5331-00-399-1087
FSC Code: 5331
MPN: 44008711340

5331-01-042-8239 (440-0871-1120)

NIIN: 01-042-8239
In stock
NSN: 5331-01-042-8239
FSC Code: 5331
MPN: 44008711120

5331-01-168-9114 (4400871-0140)

NIIN: 01-168-9114
In stock
NSN: 5331-01-168-9114
FSC Code: 5331
MPN: 44008710140

5331-00-972-9247 (4400871-0140)

NIIN: 00-972-9247
In stock
NSN: 5331-00-972-9247
FSC Code: 5331
MPN: 44008710140

5331-00-916-6643 (4400771-1150)

NIIN: 00-916-6643
In stock
NSN: 5331-00-916-6643
FSC Code: 5331
MPN: 44007711150

5331-00-916-6641 (4400771-0300)

NIIN: 00-916-6641
In stock
NSN: 5331-00-916-6641
FSC Code: 5331
MPN: 44007710300

5331-00-399-1082 (4400871-0050)

NIIN: 00-399-1082
In stock
NSN: 5331-00-399-1082
FSC Code: 5331
MPN: 44008710050

5331-00-087-5207 (4400771-1130)

NIIN: 00-087-5207
In stock
NSN: 5331-00-087-5207
FSC Code: 5331
MPN: 44007711130

5331-01-233-5078 (4400871-0120)

NIIN: 01-233-5078
In stock
NSN: 5331-01-233-5078
FSC Code: 5331
MPN: 44008710120

5331-00-087-8832 (4400771-0130)

NIIN: 00-087-8832
In stock
NSN: 5331-00-087-8832
FSC Code: 5331
MPN: 44007710130

5331-00-916-6642 (4400771-0310)

NIIN: 00-916-6642
In stock
NSN: 5331-00-916-6642
FSC Code: 5331
MPN: 44007710310

5331-00-303-0429 (4400596-1220)

NIIN: 00-303-0429
In stock
NSN: 5331-00-303-0429
FSC Code: 5331
MPN: 44005961220

5331-00-052-1602 (4400661-1360)

NIIN: 00-052-1602
In stock
NSN: 5331-00-052-1602
FSC Code: 5331
MPN: 44006611360

5331-00-928-9580 (4400771-0170)

NIIN: 00-928-9580
In stock
NSN: 5331-00-928-9580
FSC Code: 5331
MPN: 44007710170

5331-00-340-4474 (4400596-0280)

NIIN: 00-340-4474
In stock
NSN: 5331-00-340-4474
FSC Code: 5331
MPN: 44005960280

5331-00-559-4017 (4400591-0140)

NIIN: 00-559-4017
In stock
NSN: 5331-00-559-4017
FSC Code: 5331
MPN: 44005910140

5331-00-202-0468 (4400596-0210)

NIIN: 00-202-0468
In stock
NSN: 5331-00-202-0468
FSC Code: 5331
MPN: 44005960210

5331-01-235-4332 (4400591-2100)

NIIN: 01-235-4332
In stock
NSN: 5331-01-235-4332
FSC Code: 5331
MPN: 44005912100

5331-00-413-5191 (4400596-0060)

NIIN: 00-413-5191
In stock
NSN: 5331-00-413-5191
FSC Code: 5331
MPN: 44005960060

5331-01-235-4329 (4400591-1300)

NIIN: 01-235-4329
In stock
NSN: 5331-01-235-4329
FSC Code: 5331
MPN: 44005911300

5331-01-235-4328 (4400591-1390)

NIIN: 01-235-4328
In stock
NSN: 5331-01-235-4328
FSC Code: 5331
MPN: 44005911390

5331-00-559-4016 (4400591-012)

NIIN: 00-559-4016
In stock
NSN: 5331-00-559-4016
FSC Code: 5331
MPN: 4400591012

5331-01-130-9804 (4400571-1231)

NIIN: 01-130-9804
In stock
NSN: 5331-01-130-9804
FSC Code: 5331
MPN: 44005711231

5331-00-245-2348 (4400591-0180)

NIIN: 00-245-2348
In stock
NSN: 5331-00-245-2348
FSC Code: 5331
MPN: 44005910180

5331-00-559-4014 (4400591-0050)

NIIN: 00-559-4014
In stock
NSN: 5331-00-559-4014
FSC Code: 5331
MPN: 44005910050

5331-00-562-1654 (4400591-1160)

NIIN: 00-562-1654
In stock
NSN: 5331-00-562-1654
FSC Code: 5331
MPN: 44005911160

5331-00-051-6870 (4400571-1290)

NIIN: 00-051-6870
In stock
NSN: 5331-00-051-6870
FSC Code: 5331
MPN: 44005711290

5331-00-245-2353 (4400591-0150)

NIIN: 00-245-2353
In stock
NSN: 5331-00-245-2353
FSC Code: 5331
MPN: 44005910150

5331-01-254-5311 (4400571-0180)

NIIN: 01-254-5311
In stock
NSN: 5331-01-254-5311
FSC Code: 5331
MPN: 44005710180

5331-01-124-1106 (4400481-0120)

NIIN: 01-124-1106
In stock
NSN: 5331-01-124-1106
FSC Code: 5331
MPN: 44004810120

5331-01-085-3903 (440-0481-0110)

NIIN: 01-085-3903
In stock
NSN: 5331-01-085-3903
FSC Code: 5331
MPN: 44004810110

5331-01-208-3770 (440-0481-0190)

NIIN: 01-208-3770
In stock
NSN: 5331-01-208-3770
FSC Code: 5331
MPN: 44004810190