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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.

5331-01-380-8186 (12132F18-456B)

NIIN: 01-380-8186
In stock
NSN: 5331-01-380-8186
FSC Code: 5331
MPN: 12132F18456B

5331-01-534-2054 (1213329H1)

NIIN: 01-534-2054
In stock
NSN: 5331-01-534-2054
FSC Code: 5331
MPN: 1213329H1

5331-01-529-0301 (12-133)

NIIN: 01-529-0301
In stock
NSN: 5331-01-529-0301
FSC Code: 5331
MPN: 12133

5331-00-870-0308 (367880X1)

NIIN: 00-870-0308
In stock
NSN: 5331-00-870-0308
FSC Code: 5331
MPN: 367880X1

5331-00-663-7687 (3672-05REVAPC4)

NIIN: 00-663-7687
In stock
NSN: 5331-00-663-7687
FSC Code: 5331
MPN: 367205REVAPC4

5331-00-297-6532 (3672-05REVAPC2)

NIIN: 00-297-6532
In stock
NSN: 5331-00-297-6532
FSC Code: 5331
MPN: 367205REVAPC2

5331-00-881-0295 (367166-1)

NIIN: 00-881-0295
In stock
NSN: 5331-00-881-0295
FSC Code: 5331
MPN: 3671661

5331-00-689-3970 (367-1010-01)

NIIN: 00-689-3970
In stock
NSN: 5331-00-689-3970
FSC Code: 5331
MPN: 367101001

5331-00-915-2270 (367-1008)

NIIN: 00-915-2270
In stock
NSN: 5331-00-915-2270
FSC Code: 5331
MPN: 3671008

5331-01-384-9907 (12-10685)

NIIN: 01-384-9907
In stock
NSN: 5331-01-384-9907
FSC Code: 5331
MPN: 1210685

5331-01-436-2529 (A-631-12505-2)

NIIN: 01-436-2529
In stock
NSN: 5331-01-436-2529
FSC Code: 5331
MPN: A631125052

5331-12-331-5838 (700429120002.MTU)

NIIN: 12-331-5838
In stock
NSN: 5331-12-331-5838
FSC Code: 5331
MPN: 700429120002MTU

5331-01-350-2974 (120R)

NIIN: 01-350-2974
In stock
NSN: 5331-01-350-2974
FSC Code: 5331
MPN: 120R

5331-01-527-8055 (120-9762)

NIIN: 01-527-8055
In stock
NSN: 5331-01-527-8055
FSC Code: 5331
MPN: 1209762

5331-00-905-6954 (366247-1)

NIIN: 00-905-6954
In stock
NSN: 5331-00-905-6954
FSC Code: 5331
MPN: 3662471

5331-01-479-2561 (12-09-1822)

NIIN: 01-479-2561
In stock
NSN: 5331-01-479-2561
FSC Code: 5331
MPN: 12091822

5331-01-479-2558 (12-08-1822)

NIIN: 01-479-2558
In stock
NSN: 5331-01-479-2558
FSC Code: 5331
MPN: 12081822

5331-01-509-1992 (120-7669)

NIIN: 01-509-1992
In stock
NSN: 5331-01-509-1992
FSC Code: 5331
MPN: 1207669

5331-01-509-2002 (120-7629)

NIIN: 01-509-2002
In stock
NSN: 5331-01-509-2002
FSC Code: 5331
MPN: 1207629

5331-01-085-3101 (366-04010)

NIIN: 01-085-3101
In stock
NSN: 5331-01-085-3101
FSC Code: 5331
MPN: 36604010

5331-01-479-2553 (12-07-1822)

NIIN: 01-479-2553
In stock
NSN: 5331-01-479-2553
FSC Code: 5331
MPN: 12071822

5331-01-363-4126 (1-20719)

NIIN: 01-363-4126
In stock
NSN: 5331-01-363-4126
FSC Code: 5331
MPN: 120719

5331-01-363-4125 (1-20719)

NIIN: 01-363-4125
In stock
NSN: 5331-01-363-4125
FSC Code: 5331
MPN: 120719

5331-01-363-2667 (1-20719)

NIIN: 01-363-2667
In stock
NSN: 5331-01-363-2667
FSC Code: 5331
MPN: 120719

5331-01-363-4124 (1-20719)

NIIN: 01-363-4124
In stock
NSN: 5331-01-363-4124
FSC Code: 5331
MPN: 120719

5331-01-363-4123 (1-20719)

NIIN: 01-363-4123
In stock
NSN: 5331-01-363-4123
FSC Code: 5331
MPN: 120719

5331-01-363-2669 (1-20719)

NIIN: 01-363-2669
In stock
NSN: 5331-01-363-2669
FSC Code: 5331
MPN: 120719

5331-01-363-2668 (1-20719)

NIIN: 01-363-2668
In stock
NSN: 5331-01-363-2668
FSC Code: 5331
MPN: 120719

5331-01-363-2670 (1-20719)

NIIN: 01-363-2670
In stock
NSN: 5331-01-363-2670
FSC Code: 5331
MPN: 120719

5331-01-363-9554 (1-20719)

NIIN: 01-363-9554
In stock
NSN: 5331-01-363-9554
FSC Code: 5331
MPN: 120719

5331-01-363-2666 (1-20719)

NIIN: 01-363-2666
In stock
NSN: 5331-01-363-2666
FSC Code: 5331
MPN: 120719

5331-01-363-4122 (1-20719)

NIIN: 01-363-4122
In stock
NSN: 5331-01-363-4122
FSC Code: 5331
MPN: 120719

5331-01-386-0577 (AMS-R-83285GR80/AS568-217)

NIIN: 01-386-0577
In stock
NSN: 5331-01-386-0577
FSC Code: 5331
MPN: AMSR83285GR80AS568217

5331-01-521-7071 (1205-S-2697)

NIIN: 01-521-7071
In stock
NSN: 5331-01-521-7071
FSC Code: 5331
MPN: 1205S2697

5331-01-483-5584 (1205L002)

NIIN: 01-483-5584
In stock
NSN: 5331-01-483-5584
FSC Code: 5331
MPN: 1205L002

5331-00-140-7797 (365-8307)

NIIN: 00-140-7797
In stock
NSN: 5331-00-140-7797
FSC Code: 5331
MPN: 3658307

5331-01-478-5191 (TDA/1205G761)

NIIN: 01-478-5191
In stock
NSN: 5331-01-478-5191
FSC Code: 5331
MPN: TDA1205G761

5331-01-568-6256 (1205G761)

NIIN: 01-568-6256
In stock
NSN: 5331-01-568-6256
FSC Code: 5331
MPN: 1205G761

5331-01-384-5324 (1205A2263)

NIIN: 01-384-5324
In stock
NSN: 5331-01-384-5324
FSC Code: 5331
MPN: 1205A2263

5331-01-521-7078 (1205-F-2580)

NIIN: 01-521-7078
In stock
NSN: 5331-01-521-7078
FSC Code: 5331
MPN: 1205F2580

5331-00-066-8396 (3655-1ITEM19)

NIIN: 00-066-8396
In stock
NSN: 5331-00-066-8396
FSC Code: 5331
MPN: 36551ITEM19

5331-00-418-2367 (365263-1)

NIIN: 00-418-2367
In stock
NSN: 5331-00-418-2367
FSC Code: 5331
MPN: 3652631

5331-00-616-7595 (365211-6)

NIIN: 00-616-7595
In stock
NSN: 5331-00-616-7595
FSC Code: 5331
MPN: 3652116

5331-00-627-5917 (365211-7)

NIIN: 00-627-5917
In stock
NSN: 5331-00-627-5917
FSC Code: 5331
MPN: 3652117

5331-01-415-1943 (1203-1121)

NIIN: 01-415-1943
In stock
NSN: 5331-01-415-1943
FSC Code: 5331
MPN: 12031121

5331-00-292-0625 (36495-20)

NIIN: 00-292-0625
In stock
NSN: 5331-00-292-0625
FSC Code: 5331
MPN: 3649520

5331-01-330-2908 (364839R1)

NIIN: 01-330-2908
In stock
NSN: 5331-01-330-2908
FSC Code: 5331
MPN: 364839R1

5331-01-518-9253 (1202-905-24)

NIIN: 01-518-9253
In stock
NSN: 5331-01-518-9253
FSC Code: 5331
MPN: 120290524