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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.

5331-00-997-3015 (S1120-181)

NIIN: 00-997-3015
In stock
NSN: 5331-00-997-3015
FSC Code: 5331
MPN: S1120181

5331-01-242-0445 (S1-114BA)

NIIN: 01-242-0445
In stock
NSN: 5331-01-242-0445
FSC Code: 5331
MPN: S1114BA

5331-01-119-6706 (S11052-17Q5)

NIIN: 01-119-6706
In stock
NSN: 5331-01-119-6706
FSC Code: 5331
MPN: S1105217Q5

5331-01-189-3634 (S110031)

NIIN: 01-189-3634
In stock
NSN: 5331-01-189-3634
FSC Code: 5331
MPN: S110031

5331-00-903-5114 (S10A070-199)

NIIN: 00-903-5114
In stock
NSN: 5331-00-903-5114
FSC Code: 5331
MPN: S10A070199

5331-00-001-9779 (S10A070-149)

NIIN: 00-001-9779
In stock
NSN: 5331-00-001-9779
FSC Code: 5331
MPN: S10A070149

5331-01-381-0832 (C4026-0.50IN)

NIIN: 01-381-0832
In stock
NSN: 5331-01-381-0832
FSC Code: 5331
MPN: C4026050IN

5331-01-380-0833 (C4026-.50)

NIIN: 01-380-0833
In stock
NSN: 5331-01-380-0833
FSC Code: 5331
MPN: C402650

5331-01-380-0782 (C4026-.50IN)

NIIN: 01-380-0782
In stock
NSN: 5331-01-380-0782
FSC Code: 5331
MPN: C402650IN

5331-01-380-0787 (C4026-.50IN)

NIIN: 01-380-0787
In stock
NSN: 5331-01-380-0787
FSC Code: 5331
MPN: C402650IN

5331-01-371-2047 (C3EHCST-187-026)

NIIN: 01-371-2047
In stock
NSN: 5331-01-371-2047
FSC Code: 5331
MPN: C3EHCST187026

5331-01-299-3149 (S102CB28)

NIIN: 01-299-3149
In stock
NSN: 5331-01-299-3149
FSC Code: 5331
MPN: S102CB28

5331-00-409-6813 (S1-022A)

NIIN: 00-409-6813
In stock
NSN: 5331-00-409-6813
FSC Code: 5331
MPN: S1022A

5331-00-900-6511 (S101Y8)

NIIN: 00-900-6511
In stock
NSN: 5331-00-900-6511
FSC Code: 5331
MPN: S101Y8

5331-00-182-3083 (S1-020A)

NIIN: 00-182-3083
In stock
NSN: 5331-00-182-3083
FSC Code: 5331
MPN: S1020A

5331-00-057-7457 (S101S25)

NIIN: 00-057-7457
In stock
NSN: 5331-00-057-7457
FSC Code: 5331
MPN: S101S25

5331-01-299-3147 (S101CB34)

NIIN: 01-299-3147
In stock
NSN: 5331-01-299-3147
FSC Code: 5331
MPN: S101CB34

5331-00-901-8316 (S101Y112)

NIIN: 00-901-8316
In stock
NSN: 5331-00-901-8316
FSC Code: 5331
MPN: S101Y112

5331-00-056-7837 (S101S19)

NIIN: 00-056-7837
In stock
NSN: 5331-00-056-7837
FSC Code: 5331
MPN: S101S19

5331-00-064-1528 (S101D8)

NIIN: 00-064-1528
In stock
NSN: 5331-00-064-1528
FSC Code: 5331
MPN: S101D8

5331-01-299-3150 (S101CB28)

NIIN: 01-299-3150
In stock
NSN: 5331-01-299-3150
FSC Code: 5331
MPN: S101CB28

5331-01-299-3151 (S101CB156)

NIIN: 01-299-3151
In stock
NSN: 5331-01-299-3151
FSC Code: 5331
MPN: S101CB156

5331-01-299-3148 (S101CB122)

NIIN: 01-299-3148
In stock
NSN: 5331-01-299-3148
FSC Code: 5331
MPN: S101CB122

5331-00-093-7270 (S101AC18)

NIIN: 00-093-7270
In stock
NSN: 5331-00-093-7270
FSC Code: 5331
MPN: S101AC18

5331-00-101-8685 (S101AC13)

NIIN: 00-101-8685
In stock
NSN: 5331-00-101-8685
FSC Code: 5331
MPN: S101AC13

5331-00-451-5307 (S101A16)

NIIN: 00-451-5307
In stock
NSN: 5331-00-451-5307
FSC Code: 5331
MPN: S101A16

5331-01-107-1838 (S1013-6)

NIIN: 01-107-1838
In stock
NSN: 5331-01-107-1838
FSC Code: 5331
MPN: S10136

5331-00-182-3084 (S1-011A)

NIIN: 00-182-3084
In stock
NSN: 5331-00-182-3084
FSC Code: 5331
MPN: S1011A

5331-01-075-0351 (S-1-006-U)

NIIN: 01-075-0351
In stock
NSN: 5331-01-075-0351
FSC Code: 5331
MPN: S1006U

5331-00-559-6540 (S10027-11)

NIIN: 00-559-6540
In stock
NSN: 5331-00-559-6540
FSC Code: 5331
MPN: S1002711

5331-01-504-0981 (C-3492)

NIIN: 01-504-0981
In stock
NSN: 5331-01-504-0981
FSC Code: 5331
MPN: C3492

5331-01-136-7128 (S0X-37SJ)

NIIN: 01-136-7128
In stock
NSN: 5331-01-136-7128
FSC Code: 5331
MPN: S0X37SJ

5331-01-239-7909 (S0R)

NIIN: 01-239-7909
In stock
NSN: 5331-01-239-7909
FSC Code: 5331
MPN: S0R

5331-01-226-9084 (S0R)

NIIN: 01-226-9084
In stock
NSN: 5331-01-226-9084
FSC Code: 5331
MPN: S0R

5331-01-226-8746 (S0R)

NIIN: 01-226-8746
In stock
NSN: 5331-01-226-8746
FSC Code: 5331
MPN: S0R

5331-01-242-0447 (S0R10)

NIIN: 01-242-0447
In stock
NSN: 5331-01-242-0447
FSC Code: 5331
MPN: S0R10

5331-01-226-8745 (S0R)

NIIN: 01-226-8745
In stock
NSN: 5331-01-226-8745
FSC Code: 5331
MPN: S0R

5331-01-204-2025 (S0R66)

NIIN: 01-204-2025
In stock
NSN: 5331-01-204-2025
FSC Code: 5331
MPN: S0R66

5331-01-211-7354 (S0R64)

NIIN: 01-211-7354
In stock
NSN: 5331-01-211-7354
FSC Code: 5331
MPN: S0R64

5331-01-226-9085 (S0R)

NIIN: 01-226-9085
In stock
NSN: 5331-01-226-9085
FSC Code: 5331
MPN: S0R

5331-01-239-9425 (S0R)

NIIN: 01-239-9425
In stock
NSN: 5331-01-239-9425
FSC Code: 5331
MPN: S0R

5331-01-275-1194 (S0762)

NIIN: 01-275-1194
In stock
NSN: 5331-01-275-1194
FSC Code: 5331
MPN: S0762

5331-01-481-8509 (C-3317-427-1)

NIIN: 01-481-8509
In stock
NSN: 5331-01-481-8509
FSC Code: 5331
MPN: C33174271

5331-01-467-8727 (C-3317-348-1)

NIIN: 01-467-8727
In stock
NSN: 5331-01-467-8727
FSC Code: 5331
MPN: C33173481

5331-01-488-4510 (C-3317-228)

NIIN: 01-488-4510
In stock
NSN: 5331-01-488-4510
FSC Code: 5331
MPN: C3317228

5331-01-488-4463 (C-3317-426-2)

NIIN: 01-488-4463
In stock
NSN: 5331-01-488-4463
FSC Code: 5331
MPN: C33174262

5331-01-488-4509 (C-3317-247)

NIIN: 01-488-4509
In stock
NSN: 5331-01-488-4509
FSC Code: 5331
MPN: C3317247

5331-01-488-4512 (C-3317-115-1)

NIIN: 01-488-4512
In stock
NSN: 5331-01-488-4512
FSC Code: 5331
MPN: C33171151