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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.

5331-01-571-9680 (T143166)

NIIN: 01-571-9680
In stock
NSN: 5331-01-571-9680
FSC Code: 5331
MPN: T143166

5331-01-571-8803 (T143760)

NIIN: 01-571-8803
In stock
NSN: 5331-01-571-8803
FSC Code: 5331
MPN: T143760

5331-01-567-8389 (T144698)

NIIN: 01-567-8389
In stock
NSN: 5331-01-567-8389
FSC Code: 5331
MPN: T144698

5331-01-567-4521 (T143169)

NIIN: 01-567-4521
In stock
NSN: 5331-01-567-4521
FSC Code: 5331
MPN: T143169

5331-01-549-9001 (T143324)

NIIN: 01-549-9001
In stock
NSN: 5331-01-549-9001
FSC Code: 5331
MPN: T143324

5331-01-478-7790 (T14063T0012)

NIIN: 01-478-7790
In stock
NSN: 5331-01-478-7790
FSC Code: 5331
MPN: T14063T0012

5331-01-478-7787 (T14057T0012)

NIIN: 01-478-7787
In stock
NSN: 5331-01-478-7787
FSC Code: 5331
MPN: T14057T0012

5331-01-395-7887 (T139636)

NIIN: 01-395-7887
In stock
NSN: 5331-01-395-7887
FSC Code: 5331
MPN: T139636

5331-01-532-7761 (T13336ITEM91T13123)

NIIN: 01-532-7761
In stock
NSN: 5331-01-532-7761
FSC Code: 5331
MPN: T13336ITEM91T13123

5331-01-459-6758 (T121)

NIIN: 01-459-6758
In stock
NSN: 5331-01-459-6758
FSC Code: 5331
MPN: T121

5331-01-474-4213 (T11899)

NIIN: 01-474-4213
In stock
NSN: 5331-01-474-4213
FSC Code: 5331
MPN: T11899

5331-01-570-2993 (T118685)

NIIN: 01-570-2993
In stock
NSN: 5331-01-570-2993
FSC Code: 5331
MPN: T118685

5331-01-550-8278 (T118681)

NIIN: 01-550-8278
In stock
NSN: 5331-01-550-8278
FSC Code: 5331
MPN: T118681

5331-01-473-9717 (T111819)

NIIN: 01-473-9717
In stock
NSN: 5331-01-473-9717
FSC Code: 5331
MPN: T111819

5331-01-472-8545 (T11150)

NIIN: 01-472-8545
In stock
NSN: 5331-01-472-8545
FSC Code: 5331
MPN: T11150

5331-01-474-4236 (T111314)

NIIN: 01-474-4236
In stock
NSN: 5331-01-474-4236
FSC Code: 5331
MPN: T111314

5331-01-571-6610 (T107887)

NIIN: 01-571-6610
In stock
NSN: 5331-01-571-6610
FSC Code: 5331
MPN: T107887

5331-01-459-6764 (T106)

NIIN: 01-459-6764
In stock
NSN: 5331-01-459-6764
FSC Code: 5331
MPN: T106

5331-01-474-4245 (T106291)

NIIN: 01-474-4245
In stock
NSN: 5331-01-474-4245
FSC Code: 5331
MPN: T106291

5331-01-474-4238 (T106370)

NIIN: 01-474-4238
In stock
NSN: 5331-01-474-4238
FSC Code: 5331
MPN: T106370

5331-01-572-4463 (T10540556)

NIIN: 01-572-4463
In stock
NSN: 5331-01-572-4463
FSC Code: 5331
MPN: T10540556

5331-01-342-9026 (T104134A)

NIIN: 01-342-9026
In stock
NSN: 5331-01-342-9026
FSC Code: 5331
MPN: T104134A

5331-01-459-6765 (T104)

NIIN: 01-459-6765
In stock
NSN: 5331-01-459-6765
FSC Code: 5331
MPN: T104

5331-01-570-2989 (T102419)

NIIN: 01-570-2989
In stock
NSN: 5331-01-570-2989
FSC Code: 5331
MPN: T102419

5331-01-459-6763 (T102120)

NIIN: 01-459-6763
In stock
NSN: 5331-01-459-6763
FSC Code: 5331
MPN: T102120

5331-01-450-9127 (T1010W)

NIIN: 01-450-9127
In stock
NSN: 5331-01-450-9127
FSC Code: 5331
MPN: T1010W

5331-01-450-9134 (T1003W)

NIIN: 01-450-9134
In stock
NSN: 5331-01-450-9134
FSC Code: 5331
MPN: T1003W

5331-01-450-9143 (T1007W)

NIIN: 01-450-9143
In stock
NSN: 5331-01-450-9143
FSC Code: 5331
MPN: T1007W

5331-01-450-9142 (T1009W)

NIIN: 01-450-9142
In stock
NSN: 5331-01-450-9142
FSC Code: 5331
MPN: T1009W

5331-01-450-9145 (T1008W)

NIIN: 01-450-9145
In stock
NSN: 5331-01-450-9145
FSC Code: 5331
MPN: T1008W

5331-01-450-9132 (T1002W)

NIIN: 01-450-9132
In stock
NSN: 5331-01-450-9132
FSC Code: 5331
MPN: T1002W

5331-01-450-9136 (T1004W)

NIIN: 01-450-9136
In stock
NSN: 5331-01-450-9136
FSC Code: 5331
MPN: T1004W

5331-01-451-2335 (T1001W)

NIIN: 01-451-2335
In stock
NSN: 5331-01-451-2335
FSC Code: 5331
MPN: T1001W

5331-01-450-9139 (T1006W)

NIIN: 01-450-9139
In stock
NSN: 5331-01-450-9139
FSC Code: 5331
MPN: T1006W

5331-01-450-9137 (T1005W)

NIIN: 01-450-9137
In stock
NSN: 5331-01-450-9137
FSC Code: 5331
MPN: T1005W

5331-01-412-9721 (VS-0600-551155)

NIIN: 01-412-9721
In stock
NSN: 5331-01-412-9721
FSC Code: 5331
MPN: VS0600551155

5331-01-385-1672 (T003000672)

NIIN: 01-385-1672
In stock
NSN: 5331-01-385-1672
FSC Code: 5331
MPN: T003000672

5331-01-388-8021 (T002005796)

NIIN: 01-388-8021
In stock
NSN: 5331-01-388-8021
FSC Code: 5331
MPN: T002005796

5331-01-452-3198 (STSV058F21CP)

NIIN: 01-452-3198
In stock
NSN: 5331-01-452-3198
FSC Code: 5331
MPN: STSV058F21CP

5331-01-452-4785 (STSV047AN013CP)

NIIN: 01-452-4785
In stock
NSN: 5331-01-452-4785
FSC Code: 5331
MPN: STSV047AN013CP

5331-01-400-2888 (STSV047AN014CP)

NIIN: 01-400-2888
In stock
NSN: 5331-01-400-2888
FSC Code: 5331
MPN: STSV047AN014CP

5331-01-400-2578 (STSV047AL214)

NIIN: 01-400-2578
In stock
NSN: 5331-01-400-2578
FSC Code: 5331
MPN: STSV047AL214

5331-01-400-3665 (STSV047AL039)

NIIN: 01-400-3665
In stock
NSN: 5331-01-400-3665
FSC Code: 5331
MPN: STSV047AL039

5331-01-400-1771 (STSV047AL239)

NIIN: 01-400-1771
In stock
NSN: 5331-01-400-1771
FSC Code: 5331
MPN: STSV047AL239

5331-01-400-2877 (STSV047AL908)

NIIN: 01-400-2877
In stock
NSN: 5331-01-400-2877
FSC Code: 5331
MPN: STSV047AL908

5331-01-400-1766 (STSV047AL238)

NIIN: 01-400-1766
In stock
NSN: 5331-01-400-1766
FSC Code: 5331
MPN: STSV047AL238

5331-01-400-3656 (STSV047AN15CP)

NIIN: 01-400-3656
In stock
NSN: 5331-01-400-3656
FSC Code: 5331
MPN: STSV047AN15CP

5331-01-555-9311 (STM7060)

NIIN: 01-555-9311
In stock
NSN: 5331-01-555-9311
FSC Code: 5331
MPN: STM7060