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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.

5331-00-914-3148 (372031120046124)

NIIN: 00-914-3148
In stock
NSN: 5331-00-914-3148
FSC Code: 5331
MPN: 372031120046124

5331-01-186-1131 (372031120046143)

NIIN: 01-186-1131
In stock
NSN: 5331-01-186-1131
FSC Code: 5331
MPN: 372031120046143

5331-01-336-5939 (0.102X0.047)

NIIN: 01-336-5939
In stock
NSN: 5331-01-336-5939
FSC Code: 5331
MPN: 0102X0047

5331-01-316-5866 (0.114X0.047)

NIIN: 01-316-5866
In stock
NSN: 5331-01-316-5866
FSC Code: 5331
MPN: 0114X0047

5331-01-030-2295 (0.130IDX0.040W)

NIIN: 01-030-2295
In stock
NSN: 5331-01-030-2295
FSC Code: 5331
MPN: 0130IDX0040W

5331-01-308-8210 (0.114INX0.047IN)

NIIN: 01-308-8210
In stock
NSN: 5331-01-308-8210
FSC Code: 5331
MPN: 0114INX0047IN

5331-01-030-1826 (0.080IDX0.035W)

NIIN: 01-030-1826
In stock
NSN: 5331-01-030-1826
FSC Code: 5331
MPN: 0080IDX0035W

5331-01-030-1829 (0.042IDX0.042W)

NIIN: 01-030-1829
In stock
NSN: 5331-01-030-1829
FSC Code: 5331
MPN: 0042IDX0042W

5331-01-198-5491 (0.130X.039)

NIIN: 01-198-5491
In stock
NSN: 5331-01-198-5491
FSC Code: 5331
MPN: 0130X039

5331-00-684-2126 (0.070IDX0.040W)

NIIN: 00-684-2126
In stock
NSN: 5331-00-684-2126
FSC Code: 5331
MPN: 0070IDX0040W

5331-01-321-4127 (0.126X0.036)

NIIN: 01-321-4127
In stock
NSN: 5331-01-321-4127
FSC Code: 5331
MPN: 0126X0036

5331-01-293-6659 (0.140X0.030)

NIIN: 01-293-6659
In stock
NSN: 5331-01-293-6659
FSC Code: 5331
MPN: 0140X0030

5331-01-030-1827 (0.180IDX0.035W)

NIIN: 01-030-1827
In stock
NSN: 5331-01-030-1827
FSC Code: 5331
MPN: 0180IDX0035W

5331-01-181-0824 (0.209X0.024)

NIIN: 01-181-0824
In stock
NSN: 5331-01-181-0824
FSC Code: 5331
MPN: 0209X0024

5331-01-181-0823 (0.239X0.040)

NIIN: 01-181-0823
In stock
NSN: 5331-01-181-0823
FSC Code: 5331
MPN: 0239X0040

5331-01-312-2635 (0.170X.040-70S)

NIIN: 01-312-2635
In stock
NSN: 5331-01-312-2635
FSC Code: 5331
MPN: 0170X04070S

5331-01-191-0480 (0.239X0.070-50BUTYL)

NIIN: 01-191-0480
In stock
NSN: 5331-01-191-0480
FSC Code: 5331
MPN: 0239X007050BUTYL

5331-01-287-6528 (0.208X.070-60BN)

NIIN: 01-287-6528
In stock
NSN: 5331-01-287-6528
FSC Code: 5331
MPN: 0208X07060BN

5331-01-030-2681 (0.237IDX0.040W)

NIIN: 01-030-2681
In stock
NSN: 5331-01-030-2681
FSC Code: 5331
MPN: 0237IDX0040W

5331-01-277-0150 (0.275X.040IN-40N)

NIIN: 01-277-0150
In stock
NSN: 5331-01-277-0150
FSC Code: 5331
MPN: 0275X040IN40N

5331-01-030-2294 (0.318IDX0.035W)

NIIN: 01-030-2294
In stock
NSN: 5331-01-030-2294
FSC Code: 5331
MPN: 0318IDX0035W

5331-01-100-8814 (0.340-0.044-V835-75)

NIIN: 01-100-8814
In stock
NSN: 5331-01-100-8814
FSC Code: 5331
MPN: 03400044V83575

5331-01-306-7882 (0.394X0.059-70-VT)

NIIN: 01-306-7882
In stock
NSN: 5331-01-306-7882
FSC Code: 5331
MPN: 0394X005970VT

5331-01-046-3300 (0.364IN)

NIIN: 01-046-3300
In stock
NSN: 5331-01-046-3300
FSC Code: 5331
MPN: 0364IN

5331-01-334-1064 (0.488X0.086-70-VT)

NIIN: 01-334-1064
In stock
NSN: 5331-01-334-1064
FSC Code: 5331
MPN: 0488X008670VT

5331-01-306-5832 (0.394X0.059-B612-70)

NIIN: 01-306-5832
In stock
NSN: 5331-01-306-5832
FSC Code: 5331
MPN: 0394X0059B61270

5331-01-199-9478 (0.426X.070-70)

NIIN: 01-199-9478
In stock
NSN: 5331-01-199-9478
FSC Code: 5331
MPN: 0426X07070

5331-01-173-8782 (0.489X.070-70)

NIIN: 01-173-8782
In stock
NSN: 5331-01-173-8782
FSC Code: 5331
MPN: 0489X07070

5331-01-269-4647 (0.748X.024)

NIIN: 01-269-4647
In stock
NSN: 5331-01-269-4647
FSC Code: 5331
MPN: 0748X024

5331-01-235-6505 (0.748X0.030)

NIIN: 01-235-6505
In stock
NSN: 5331-01-235-6505
FSC Code: 5331
MPN: 0748X0030

5331-01-050-1539 (0.792IN)

NIIN: 01-050-1539
In stock
NSN: 5331-01-050-1539
FSC Code: 5331
MPN: 0792IN

5331-01-257-4323 (0.906X0.032)

NIIN: 01-257-4323
In stock
NSN: 5331-01-257-4323
FSC Code: 5331
MPN: 0906X0032

5331-01-289-4924 (00.250.0170)

NIIN: 01-289-4924
In stock
NSN: 5331-01-289-4924
FSC Code: 5331
MPN: 002500170

5331-01-326-4776 (00.100.12075)

NIIN: 01-326-4776
In stock
NSN: 5331-01-326-4776
FSC Code: 5331
MPN: 0010012075

5331-01-270-7206 (00.580.0208)

NIIN: 01-270-7206
In stock
NSN: 5331-01-270-7206
FSC Code: 5331
MPN: 005800208

5331-01-294-9447 (000)

NIIN: 01-294-9447
In stock
NSN: 5331-01-294-9447
FSC Code: 5331
MPN: 000

5331-01-293-6131 (000)

NIIN: 01-293-6131
In stock
NSN: 5331-01-293-6131
FSC Code: 5331
MPN: 000

5331-01-298-4182 (000)

NIIN: 01-298-4182
In stock
NSN: 5331-01-298-4182
FSC Code: 5331
MPN: 000

5331-01-254-6384 (0000)

NIIN: 01-254-6384
In stock
NSN: 5331-01-254-6384
FSC Code: 5331
MPN: 0000

5331-00-425-3299 (00000-0-003732)

NIIN: 00-425-3299
In stock
NSN: 5331-00-425-3299
FSC Code: 5331
MPN: 000000003732

5331-01-220-1691 (000001508)

NIIN: 01-220-1691
In stock
NSN: 5331-01-220-1691
FSC Code: 5331
MPN: 000001508

5331-01-220-1689 (000003370)

NIIN: 01-220-1689
In stock
NSN: 5331-01-220-1689
FSC Code: 5331
MPN: 000003370

5331-00-755-6576 (000006)

NIIN: 00-755-6576
In stock
NSN: 5331-00-755-6576
FSC Code: 5331
MPN: 000006

5331-01-099-2556 (000008EE)

NIIN: 01-099-2556
In stock
NSN: 5331-01-099-2556
FSC Code: 5331
MPN: 000008EE

5331-00-185-0075 (000008EG)

NIIN: 00-185-0075
In stock
NSN: 5331-00-185-0075
FSC Code: 5331
MPN: 000008EG

5331-01-296-0278 (000009EE)

NIIN: 01-296-0278
In stock
NSN: 5331-01-296-0278
FSC Code: 5331
MPN: 000009EE

5331-01-126-0877 (0000-10)

NIIN: 01-126-0877
In stock
NSN: 5331-01-126-0877
FSC Code: 5331
MPN: 000010

5331-01-253-9033 (000007EE)

NIIN: 01-253-9033
In stock
NSN: 5331-01-253-9033
FSC Code: 5331
MPN: 000007EE