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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.

5331-01-451-4079 (AMS-R-83485/1)

NIIN: 01-451-4079
In stock
NSN: 5331-01-451-4079
FSC Code: 5331
MPN: AMSR834851

5331-01-500-3125 (AMS-R-83485/1)

NIIN: 01-500-3125
In stock
NSN: 5331-01-500-3125
FSC Code: 5331
MPN: AMSR834851

5331-01-385-3444 (AMS-R-83485/1)

NIIN: 01-385-3444
In stock
NSN: 5331-01-385-3444
FSC Code: 5331
MPN: AMSR834851

5331-01-549-6466 (AMS-R-83485/1-212)

NIIN: 01-549-6466
In stock
NSN: 5331-01-549-6466
FSC Code: 5331
MPN: AMSR834851212

5331-01-411-5877 (AMS-R-83485/1)

NIIN: 01-411-5877
In stock
NSN: 5331-01-411-5877
FSC Code: 5331
MPN: AMSR834851

5331-01-557-1569 (AMS-P-83461/2-911)

NIIN: 01-557-1569
In stock
NSN: 5331-01-557-1569
FSC Code: 5331
MPN: AMSP834612911

5331-01-391-1166 (MIL-P-83461-904)

NIIN: 01-391-1166
In stock
NSN: 5331-01-391-1166
FSC Code: 5331
MPN: MILP83461904

5331-01-314-6725 (NK1548-1)

NIIN: 01-314-6725
In stock
NSN: 5331-01-314-6725
FSC Code: 5331
MPN: NK15481

5331-01-383-0103 (MIL-P-83461/1B)

NIIN: 01-383-0103
In stock
NSN: 5331-01-383-0103
FSC Code: 5331
MPN: MILP834611B

5331-01-390-7227 (AMS-R-83412/1)

NIIN: 01-390-7227
In stock
NSN: 5331-01-390-7227
FSC Code: 5331
MPN: AMSR834121

5331-01-485-6432 (AMS-R-83485/1)

NIIN: 01-485-6432
In stock
NSN: 5331-01-485-6432
FSC Code: 5331
MPN: AMSR834851

5331-01-483-0833 (M83485/1-260)

NIIN: 01-483-0833
In stock
NSN: 5331-01-483-0833
FSC Code: 5331
MPN: M834851260

5331-01-387-5834 (AMS-P-83461/M83461/1-113)

NIIN: 01-387-5834
In stock
NSN: 5331-01-387-5834
FSC Code: 5331
MPN: AMSP83461M834611113

5331-01-456-2356 (AMS-P-83461/1)

NIIN: 01-456-2356
In stock
NSN: 5331-01-456-2356
FSC Code: 5331
MPN: AMSP834611

5331-01-483-0822 (M83485/1-237)

NIIN: 01-483-0822
In stock
NSN: 5331-01-483-0822
FSC Code: 5331
MPN: M834851237

5331-01-515-9030 (AMS-R-83285GR80/AS568-028)

NIIN: 01-515-9030
In stock
NSN: 5331-01-515-9030
FSC Code: 5331
MPN: AMSR83285GR80AS568028

5331-01-351-0978 (MIL-R-83285GR80/MS33666-212)

NIIN: 01-351-0978
In stock
NSN: 5331-01-351-0978
FSC Code: 5331
MPN: MILR83285GR80MS33666212

5331-01-525-4179 (AMS-R-83285GR80/AS568-218)

NIIN: 01-525-4179
In stock
NSN: 5331-01-525-4179
FSC Code: 5331
MPN: AMSR83285GR80AS568218

5331-01-360-7653 (AMS-R-83285GR80/AS568-912)

NIIN: 01-360-7653
In stock
NSN: 5331-01-360-7653
FSC Code: 5331
MPN: AMSR83285GR80AS568912

5331-01-377-9723 (AMS-R-83285GR80/AS568-378)

NIIN: 01-377-9723
In stock
NSN: 5331-01-377-9723
FSC Code: 5331
MPN: AMSR83285GR80AS568378

5331-01-412-4499 (M83485/1-022)

NIIN: 01-412-4499
In stock
NSN: 5331-01-412-4499
FSC Code: 5331
MPN: M834851022

5331-01-483-0818 (M83485/1-210)

NIIN: 01-483-0818
In stock
NSN: 5331-01-483-0818
FSC Code: 5331
MPN: M834851210

5331-01-503-0357 (MIL-DTL-25988/2)

NIIN: 01-503-0357
In stock
NSN: 5331-01-503-0357
FSC Code: 5331
MPN: MILDTL259882

5331-01-483-0841 (M83485/1-018)

NIIN: 01-483-0841
In stock
NSN: 5331-01-483-0841
FSC Code: 5331
MPN: M834851018

5331-01-385-9503 (MIL-R-83285GR80/AS568-227)

NIIN: 01-385-9503
In stock
NSN: 5331-01-385-9503
FSC Code: 5331
MPN: MILR83285GR80AS568227

5331-01-374-5196 (AMS-R-83285GR80/AS568-473)

NIIN: 01-374-5196
In stock
NSN: 5331-01-374-5196
FSC Code: 5331
MPN: AMSR83285GR80AS568473

5331-01-522-5157 (AMS-R-83285GR80/AS568-238)

NIIN: 01-522-5157
In stock
NSN: 5331-01-522-5157
FSC Code: 5331
MPN: AMSR83285GR80AS568238

5331-01-467-0117 (AMS-R-83285GR80/AS568-906)

NIIN: 01-467-0117
In stock
NSN: 5331-01-467-0117
FSC Code: 5331
MPN: AMSR83285GR80AS568906

5331-01-483-0828 (M83485/1-239)

NIIN: 01-483-0828
In stock
NSN: 5331-01-483-0828
FSC Code: 5331
MPN: M834851239

5331-01-374-5198 (AMS-R-83285GR80/AS568-149)

NIIN: 01-374-5198
In stock
NSN: 5331-01-374-5198
FSC Code: 5331
MPN: AMSR83285GR80AS568149

5331-01-386-0576 (AMS-R-83285GR80/AS568-224)

NIIN: 01-386-0576
In stock
NSN: 5331-01-386-0576
FSC Code: 5331
MPN: AMSR83285GR80AS568224

5331-01-468-4708 (AMS-P-83461/1)

NIIN: 01-468-4708
In stock
NSN: 5331-01-468-4708
FSC Code: 5331
MPN: AMSP834611

5331-01-411-5875 (AMS-P-83461/1)

NIIN: 01-411-5875
In stock
NSN: 5331-01-411-5875
FSC Code: 5331
MPN: AMSP834611

5331-01-194-8972 (NK-1255-3)

NIIN: 01-194-8972
In stock
NSN: 5331-01-194-8972
FSC Code: 5331
MPN: NK12553

5331-01-412-6061 (AMS-P-83461/1)

NIIN: 01-412-6061
In stock
NSN: 5331-01-412-6061
FSC Code: 5331
MPN: AMSP834611

5331-01-353-1877 (MIL-P-83461/1-365)

NIIN: 01-353-1877
In stock
NSN: 5331-01-353-1877
FSC Code: 5331
MPN: MILP834611365

5331-01-383-2672 (MIL-P-83461/1-202)

NIIN: 01-383-2672
In stock
NSN: 5331-01-383-2672
FSC Code: 5331
MPN: MILP834611202

5331-01-352-4426 (AMS-P-83461/1)

NIIN: 01-352-4426
In stock
NSN: 5331-01-352-4426
FSC Code: 5331
MPN: AMSP834611

5331-01-474-6304 (AMS-P-83461/1A)

NIIN: 01-474-6304
In stock
NSN: 5331-01-474-6304
FSC Code: 5331
MPN: AMSP834611A

5331-01-422-0007 (AMS-P-83461/1)

NIIN: 01-422-0007
In stock
NSN: 5331-01-422-0007
FSC Code: 5331
MPN: AMSP834611

5331-01-448-8390 (MIL-P-83461/1-165)

NIIN: 01-448-8390
In stock
NSN: 5331-01-448-8390
FSC Code: 5331
MPN: MILP834611165

5331-01-116-8877 (NK102163-2010)

NIIN: 01-116-8877
In stock
NSN: 5331-01-116-8877
FSC Code: 5331
MPN: NK1021632010

5331-01-352-4424 (AMS-P-83461/1)

NIIN: 01-352-4424
In stock
NSN: 5331-01-352-4424
FSC Code: 5331
MPN: AMSP834611

5331-01-412-6068 (MIL-P-83461/1)

NIIN: 01-412-6068
In stock
NSN: 5331-01-412-6068
FSC Code: 5331
MPN: MILP834611

5331-01-352-4425 (AMS-P-83461/1)

NIIN: 01-352-4425
In stock
NSN: 5331-01-352-4425
FSC Code: 5331
MPN: AMSP834611

5331-01-341-6766 (AMS-P-83461/1)

NIIN: 01-341-6766
In stock
NSN: 5331-01-341-6766
FSC Code: 5331
MPN: AMSP834611

5331-01-445-5256 (AMS-P-83461/1)

NIIN: 01-445-5256
In stock
NSN: 5331-01-445-5256
FSC Code: 5331
MPN: AMSP834611

5331-01-117-6147 (NK102163-2570)

NIIN: 01-117-6147
In stock
NSN: 5331-01-117-6147
FSC Code: 5331
MPN: NK1021632570