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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.

5331-01-353-1876 (5-15-10131)

NIIN: 01-353-1876
In stock
NSN: 5331-01-353-1876
FSC Code: 5331
MPN: 51510131

5331-00-964-0360 (9871-501X14PC32)

NIIN: 00-964-0360
In stock
NSN: 5331-00-964-0360
FSC Code: 5331
MPN: 9871501X14PC32

5331-00-775-3987 (9868-091X4REVBPC14)

NIIN: 00-775-3987
In stock
NSN: 5331-00-775-3987
FSC Code: 5331
MPN: 9868091X4REVBPC14

5331-00-641-0770 (9864-263X2)

NIIN: 00-641-0770
In stock
NSN: 5331-00-641-0770
FSC Code: 5331
MPN: 9864263X2

5331-00-837-8969 (9864-632X1PC10)

NIIN: 00-837-8969
In stock
NSN: 5331-00-837-8969
FSC Code: 5331
MPN: 9864632X1PC10

5331-00-542-1854 (9864-252X2PC12)

NIIN: 00-542-1854
In stock
NSN: 5331-00-542-1854
FSC Code: 5331
MPN: 9864252X2PC12

5331-00-752-8385 (9861-011X44PC39)

NIIN: 00-752-8385
In stock
NSN: 5331-00-752-8385
FSC Code: 5331
MPN: 9861011X44PC39

5331-00-752-8384 (9861-011X44PC40)

NIIN: 00-752-8384
In stock
NSN: 5331-00-752-8384
FSC Code: 5331
MPN: 9861011X44PC40

5331-00-752-8386 (9861-011X44PC38)

NIIN: 00-752-8386
In stock
NSN: 5331-00-752-8386
FSC Code: 5331
MPN: 9861011X44PC38

5331-00-752-8169 (9861-011X14PC39)

NIIN: 00-752-8169
In stock
NSN: 5331-00-752-8169
FSC Code: 5331
MPN: 9861011X14PC39

5331-00-752-8175 (9861-011X14PC42)

NIIN: 00-752-8175
In stock
NSN: 5331-00-752-8175
FSC Code: 5331
MPN: 9861011X14PC42

5331-00-752-8387 (9861-011X44PC37)

NIIN: 00-752-8387
In stock
NSN: 5331-00-752-8387
FSC Code: 5331
MPN: 9861011X44PC37

5331-00-752-8170 (9861-011X14PC40)

NIIN: 00-752-8170
In stock
NSN: 5331-00-752-8170
FSC Code: 5331
MPN: 9861011X14PC40

5331-00-752-8171 (9861-011X14PC41)

NIIN: 00-752-8171
In stock
NSN: 5331-00-752-8171
FSC Code: 5331
MPN: 9861011X14PC41

5331-01-452-4263 (5-148L998-70)

NIIN: 01-452-4263
In stock
NSN: 5331-01-452-4263
FSC Code: 5331
MPN: 5148L99870

5331-01-390-7667 (5.1474.0)

NIIN: 01-390-7667
In stock
NSN: 5331-01-390-7667
FSC Code: 5331
MPN: 514740

5331-01-390-5942 (5.1473.0)

NIIN: 01-390-5942
In stock
NSN: 5331-01-390-5942
FSC Code: 5331
MPN: 514730

5331-01-390-5944 (5.1468.0)

NIIN: 01-390-5944
In stock
NSN: 5331-01-390-5944
FSC Code: 5331
MPN: 514680

5331-01-390-7668 (5.1465.0)

NIIN: 01-390-7668
In stock
NSN: 5331-01-390-7668
FSC Code: 5331
MPN: 514650

5331-01-389-7388 (5145-L4231)

NIIN: 01-389-7388
In stock
NSN: 5331-01-389-7388
FSC Code: 5331
MPN: 5145L4231

5331-01-389-7376 (5145-L4231-1)

NIIN: 01-389-7376
In stock
NSN: 5331-01-389-7376
FSC Code: 5331
MPN: 5145L42311

5331-01-390-7665 (5.1459.0)

NIIN: 01-390-7665
In stock
NSN: 5331-01-390-7665
FSC Code: 5331
MPN: 514590

5331-01-390-7664 (5.1455.0)

NIIN: 01-390-7664
In stock
NSN: 5331-01-390-7664
FSC Code: 5331
MPN: 514550

5331-00-542-1853 (9852-151X1PC40)

NIIN: 00-542-1853
In stock
NSN: 5331-00-542-1853
FSC Code: 5331
MPN: 9852151X1PC40

5331-00-080-4475 (985194PC18F0RPC3)

NIIN: 00-080-4475
In stock
NSN: 5331-00-080-4475
FSC Code: 5331
MPN: 985194PC18F0RPC3

5331-01-390-5945 (5.1448.0)

NIIN: 01-390-5945
In stock
NSN: 5331-01-390-5945
FSC Code: 5331
MPN: 514480

5331-00-080-4476 (985094PC18F0RPC4)

NIIN: 00-080-4476
In stock
NSN: 5331-00-080-4476
FSC Code: 5331
MPN: 985094PC18F0RPC4

5331-01-400-3712 (5-142V747-75)

NIIN: 01-400-3712
In stock
NSN: 5331-01-400-3712
FSC Code: 5331
MPN: 5142V74775

5331-01-526-9949 (5-142)

NIIN: 01-526-9949
In stock
NSN: 5331-01-526-9949
FSC Code: 5331
MPN: 5142

5331-01-370-8125 (5-141-S604-70)

NIIN: 01-370-8125
In stock
NSN: 5331-01-370-8125
FSC Code: 5331
MPN: 5141S60470

5331-01-296-1931 (984.12012.08)

NIIN: 01-296-1931
In stock
NSN: 5331-01-296-1931
FSC Code: 5331
MPN: 9841201208

5331-01-296-1929 (984.10720.05)

NIIN: 01-296-1929
In stock
NSN: 5331-01-296-1929
FSC Code: 5331
MPN: 9841072005

5331-01-143-4231 (982B054615)

NIIN: 01-143-4231
In stock
NSN: 5331-01-143-4231
FSC Code: 5331
MPN: 982B054615

5331-01-389-2269 (513BT-218)

NIIN: 01-389-2269
In stock
NSN: 5331-01-389-2269
FSC Code: 5331
MPN: 513BT218

5331-00-773-1231 (98273-31)

NIIN: 00-773-1231
In stock
NSN: 5331-00-773-1231
FSC Code: 5331
MPN: 9827331

5331-01-421-0510 (5-128)

NIIN: 01-421-0510
In stock
NSN: 5331-01-421-0510
FSC Code: 5331
MPN: 5128

5331-01-209-7027 (980-2355)

NIIN: 01-209-7027
In stock
NSN: 5331-01-209-7027
FSC Code: 5331
MPN: 9802355

5331-01-419-8408 (512-6404873-27)

NIIN: 01-419-8408
In stock
NSN: 5331-01-419-8408
FSC Code: 5331
MPN: 512640487327

5331-00-473-5109 (9800-354X1PC31)

NIIN: 00-473-5109
In stock
NSN: 5331-00-473-5109
FSC Code: 5331
MPN: 9800354X1PC31

5331-01-057-3124 (980-0000-857)

NIIN: 01-057-3124
In stock
NSN: 5331-01-057-3124
FSC Code: 5331
MPN: 9800000857

5331-01-356-8330 (51235-1-100)

NIIN: 01-356-8330
In stock
NSN: 5331-01-356-8330
FSC Code: 5331
MPN: 512351100

5331-00-752-9864 (97M71-05PC21)

NIIN: 00-752-9864
In stock
NSN: 5331-00-752-9864
FSC Code: 5331
MPN: 97M7105PC21

5331-01-222-9810 (9-7999-39)

NIIN: 01-222-9810
In stock
NSN: 5331-01-222-9810
FSC Code: 5331
MPN: 9799939

5331-00-522-7387 (9786E114-1)

NIIN: 00-522-7387
In stock
NSN: 5331-00-522-7387
FSC Code: 5331
MPN: 9786E1141

5331-00-915-2277 (977886-7-668)

NIIN: 00-915-2277
In stock
NSN: 5331-00-915-2277
FSC Code: 5331
MPN: 9778867668

5331-00-892-4080 (9778-805R1PC3)

NIIN: 00-892-4080
In stock
NSN: 5331-00-892-4080
FSC Code: 5331
MPN: 9778805R1PC3

5331-01-449-7114 (5-118-B612-70)

NIIN: 01-449-7114
In stock
NSN: 5331-01-449-7114
FSC Code: 5331
MPN: 5118B61270

5331-00-231-7191 (97690-2)

NIIN: 00-231-7191
In stock
NSN: 5331-00-231-7191
FSC Code: 5331
MPN: 976902