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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.

5331-01-368-7191 (90-0013)

NIIN: 01-368-7191
In stock
NSN: 5331-01-368-7191
FSC Code: 5331
MPN: 900013

5331-01-367-5778 (90-0018)

NIIN: 01-367-5778
In stock
NSN: 5331-01-367-5778
FSC Code: 5331
MPN: 900018

5331-01-367-5777 (90-0017)

NIIN: 01-367-5777
In stock
NSN: 5331-01-367-5777
FSC Code: 5331
MPN: 900017

5331-01-366-9731 (90-0016)

NIIN: 01-366-9731
In stock
NSN: 5331-01-366-9731
FSC Code: 5331
MPN: 900016

5331-01-382-8952 (9000-121)

NIIN: 01-382-8952
In stock
NSN: 5331-01-382-8952
FSC Code: 5331
MPN: 9000121

5331-01-438-6740 (9000-1011-4A)

NIIN: 01-438-6740
In stock
NSN: 5331-01-438-6740
FSC Code: 5331
MPN: 900010114A

5331-01-341-5395 (90001-003)

NIIN: 01-341-5395
In stock
NSN: 5331-01-341-5395
FSC Code: 5331
MPN: 90001003

5331-01-396-9163 (9000-035)

NIIN: 01-396-9163
In stock
NSN: 5331-01-396-9163
FSC Code: 5331
MPN: 9000035

5331-01-367-5779 (90-0003)

NIIN: 01-367-5779
In stock
NSN: 5331-01-367-5779
FSC Code: 5331
MPN: 900003

5331-01-382-9024 (9000-027)

NIIN: 01-382-9024
In stock
NSN: 5331-01-382-9024
FSC Code: 5331
MPN: 9000027

5331-01-438-1125 (PL9001A-00-CR1)

NIIN: 01-438-1125
In stock
NSN: 5331-01-438-1125
FSC Code: 5331
MPN: PL9001A00CR1

5331-01-470-4712 (OR240.23X1.78MM-80EP)

NIIN: 01-470-4712
In stock
NSN: 5331-01-470-4712
FSC Code: 5331
MPN: OR24023X178MM80EP

5331-01-453-4965 (9.1175.042)

NIIN: 01-453-4965
In stock
NSN: 5331-01-453-4965
FSC Code: 5331
MPN: 91175042

5331-01-571-2164 (9.488X0.070-70BU)

NIIN: 01-571-2164
In stock
NSN: 5331-01-571-2164
FSC Code: 5331
MPN: 9488X007070BU

5331-01-485-8216 (8U-5794)

NIIN: 01-485-8216
In stock
NSN: 5331-01-485-8216
FSC Code: 5331
MPN: 8U5794

5331-01-486-0726 (8U-5951)

NIIN: 01-486-0726
In stock
NSN: 5331-01-486-0726
FSC Code: 5331
MPN: 8U5951

5331-01-485-8218 (8U-5943)

NIIN: 01-485-8218
In stock
NSN: 5331-01-485-8218
FSC Code: 5331
MPN: 8U5943

5331-01-485-8203 (8U-5069)

NIIN: 01-485-8203
In stock
NSN: 5331-01-485-8203
FSC Code: 5331
MPN: 8U5069

5331-01-485-8202 (8U-3473)

NIIN: 01-485-8202
In stock
NSN: 5331-01-485-8202
FSC Code: 5331
MPN: 8U3473

5331-01-485-8217 (8U-4125)

NIIN: 01-485-8217
In stock
NSN: 5331-01-485-8217
FSC Code: 5331
MPN: 8U4125

5331-01-554-2275 (8U-2522)

NIIN: 01-554-2275
In stock
NSN: 5331-01-554-2275
FSC Code: 5331
MPN: 8U2522

5331-01-531-1851 (8TB0912)

NIIN: 01-531-1851
In stock
NSN: 5331-01-531-1851
FSC Code: 5331
MPN: 8TB0912

5331-01-531-1832 (KK71EW154)

NIIN: 01-531-1832
In stock
NSN: 5331-01-531-1832
FSC Code: 5331
MPN: KK71EW154

5331-01-531-1843 (8TB0293)

NIIN: 01-531-1843
In stock
NSN: 5331-01-531-1843
FSC Code: 5331
MPN: 8TB0293

5331-01-531-1869 (8TB0281)

NIIN: 01-531-1869
In stock
NSN: 5331-01-531-1869
FSC Code: 5331
MPN: 8TB0281

5331-01-531-1829 (8TB0911)

NIIN: 01-531-1829
In stock
NSN: 5331-01-531-1829
FSC Code: 5331
MPN: 8TB0911

5331-01-531-1891 (8TB0286)

NIIN: 01-531-1891
In stock
NSN: 5331-01-531-1891
FSC Code: 5331
MPN: 8TB0286

5331-01-531-1864 (8TB0280)

NIIN: 01-531-1864
In stock
NSN: 5331-01-531-1864
FSC Code: 5331
MPN: 8TB0280

5331-01-531-1837 (8TB0292)

NIIN: 01-531-1837
In stock
NSN: 5331-01-531-1837
FSC Code: 5331
MPN: 8TB0292

5331-01-531-1886 (8TB0283)

NIIN: 01-531-1886
In stock
NSN: 5331-01-531-1886
FSC Code: 5331
MPN: 8TB0283

5331-01-514-2019 (8T9521)

NIIN: 01-514-2019
In stock
NSN: 5331-01-514-2019
FSC Code: 5331
MPN: 8T9521

5331-01-509-2289 (8T-6444)

NIIN: 01-509-2289
In stock
NSN: 5331-01-509-2289
FSC Code: 5331
MPN: 8T6444

5331-01-485-8200 (8T-7878)

NIIN: 01-485-8200
In stock
NSN: 5331-01-485-8200
FSC Code: 5331
MPN: 8T7878

5331-01-486-0786 (8T7877)

NIIN: 01-486-0786
In stock
NSN: 5331-01-486-0786
FSC Code: 5331
MPN: 8T7877

5331-01-529-8280 (CV150540D)

NIIN: 01-529-8280
In stock
NSN: 5331-01-529-8280
FSC Code: 5331
MPN: CV150540D

5331-01-506-6949 (8T-7813)

NIIN: 01-506-6949
In stock
NSN: 5331-01-506-6949
FSC Code: 5331
MPN: 8T7813

5331-01-386-8137 (8T3539)

NIIN: 01-386-8137
In stock
NSN: 5331-01-386-8137
FSC Code: 5331
MPN: 8T3539

5331-01-473-6129 (8T2360)

NIIN: 01-473-6129
In stock
NSN: 5331-01-473-6129
FSC Code: 5331
MPN: 8T2360

5331-01-473-6133 (8T2361)

NIIN: 01-473-6133
In stock
NSN: 5331-01-473-6133
FSC Code: 5331
MPN: 8T2361

5331-01-524-7279 (8T1703)

NIIN: 01-524-7279
In stock
NSN: 5331-01-524-7279
FSC Code: 5331
MPN: 8T1703

5331-01-342-2748 (8T-0568)

NIIN: 01-342-2748
In stock
NSN: 5331-01-342-2748
FSC Code: 5331
MPN: 8T0568

5331-01-378-3667 (8T0315)

NIIN: 01-378-3667
In stock
NSN: 5331-01-378-3667
FSC Code: 5331
MPN: 8T0315

5331-01-485-8212 (8T-0116)

NIIN: 01-485-8212
In stock
NSN: 5331-01-485-8212
FSC Code: 5331
MPN: 8T0116

5331-01-485-8214 (8T-0117)

NIIN: 01-485-8214
In stock
NSN: 5331-01-485-8214
FSC Code: 5331
MPN: 8T0117

5331-01-563-0801 (8R)

NIIN: 01-563-0801
In stock
NSN: 5331-01-563-0801
FSC Code: 5331
MPN: 8R

5331-01-473-7150 (8Q0-V1)

NIIN: 01-473-7150
In stock
NSN: 5331-01-473-7150
FSC Code: 5331
MPN: 8Q0V1

5331-01-473-6920 (8P-2019)

NIIN: 01-473-6920
In stock
NSN: 5331-01-473-6920
FSC Code: 5331
MPN: 8P2019

5331-01-564-9620 (8M6509)

NIIN: 01-564-9620
In stock
NSN: 5331-01-564-9620
FSC Code: 5331
MPN: 8M6509