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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.

5331-00-801-8970 (A5-4100)

NIIN: 00-801-8970
In stock
NSN: 5331-00-801-8970
FSC Code: 5331
MPN: A54100

5331-00-801-8972 (A5-4190)

NIIN: 00-801-8972
In stock
NSN: 5331-00-801-8972
FSC Code: 5331
MPN: A54190

5331-00-801-8399 (A5-4106)

NIIN: 00-801-8399
In stock
NSN: 5331-00-801-8399
FSC Code: 5331
MPN: A54106

5331-00-801-6427 (A5-4070)

NIIN: 00-801-6427
In stock
NSN: 5331-00-801-6427
FSC Code: 5331
MPN: A54070

5331-00-401-1525 (A53916)

NIIN: 00-401-1525
In stock
NSN: 5331-00-401-1525
FSC Code: 5331
MPN: A53916

5331-01-368-7412 (564-0176-802)

NIIN: 01-368-7412
In stock
NSN: 5331-01-368-7412
FSC Code: 5331
MPN: 5640176802

5331-01-172-1859 (A-53873)

NIIN: 01-172-1859
In stock
NSN: 5331-01-172-1859
FSC Code: 5331
MPN: A53873

5331-01-490-3192 (5-632N674-70)

NIIN: 01-490-3192
In stock
NSN: 5331-01-490-3192
FSC Code: 5331
MPN: 5632N67470

5331-01-571-3673 (B0612-705-632)

NIIN: 01-571-3673
In stock
NSN: 5331-01-571-3673
FSC Code: 5331
MPN: B0612705632

5331-01-330-5280 (A53581-170)

NIIN: 01-330-5280
In stock
NSN: 5331-01-330-5280
FSC Code: 5331
MPN: A53581170

5331-20-002-0229 (5625-0601ITEMNO.177)

NIIN: 20-002-0229
In stock
NSN: 5331-20-002-0229
FSC Code: 5331
MPN: 56250601ITEMNO177

5331-01-133-0114 (A525-AE673-145)

NIIN: 01-133-0114
In stock
NSN: 5331-01-133-0114
FSC Code: 5331
MPN: A525AE673145

5331-01-133-0112 (A525-AE673-149)

NIIN: 01-133-0112
In stock
NSN: 5331-01-133-0112
FSC Code: 5331
MPN: A525AE673149

5331-01-133-8941 (A525-AE673-37)

NIIN: 01-133-8941
In stock
NSN: 5331-01-133-8941
FSC Code: 5331
MPN: A525AE67337

5331-01-133-0113 (A525-AE673-138)

NIIN: 01-133-0113
In stock
NSN: 5331-01-133-0113
FSC Code: 5331
MPN: A525AE673138

5331-00-401-1531 (A52320)

NIIN: 00-401-1531
In stock
NSN: 5331-00-401-1531
FSC Code: 5331
MPN: A52320

5331-00-005-6151 (A52192)

NIIN: 00-005-6151
In stock
NSN: 5331-00-005-6151
FSC Code: 5331
MPN: A52192

5331-00-005-6150 (A52145)

NIIN: 00-005-6150
In stock
NSN: 5331-00-005-6150
FSC Code: 5331
MPN: A52145

5331-01-380-2118 (5-617N674-70)

NIIN: 01-380-2118
In stock
NSN: 5331-01-380-2118
FSC Code: 5331
MPN: 5617N67470

5331-01-373-3458 (5-616S604-70)

NIIN: 01-373-3458
In stock
NSN: 5331-01-373-3458
FSC Code: 5331
MPN: 5616S60470

5331-01-495-9406 (561-6985067-8)

NIIN: 01-495-9406
In stock
NSN: 5331-01-495-9406
FSC Code: 5331
MPN: 56169850678

5331-01-496-9735 (561-6985096-11)

NIIN: 01-496-9735
In stock
NSN: 5331-01-496-9735
FSC Code: 5331
MPN: 561698509611

5331-01-501-2717 (5616140-260)

NIIN: 01-501-2717
In stock
NSN: 5331-01-501-2717
FSC Code: 5331
MPN: 5616140260

5331-01-501-2412 (5616140-451)

NIIN: 01-501-2412
In stock
NSN: 5331-01-501-2412
FSC Code: 5331
MPN: 5616140451

5331-01-501-2441 (5616140-166)

NIIN: 01-501-2441
In stock
NSN: 5331-01-501-2441
FSC Code: 5331
MPN: 5616140166

5331-01-501-2708 (5616140-130)

NIIN: 01-501-2708
In stock
NSN: 5331-01-501-2708
FSC Code: 5331
MPN: 5616140130

5331-01-501-2720 (5616140-111)

NIIN: 01-501-2720
In stock
NSN: 5331-01-501-2720
FSC Code: 5331
MPN: 5616140111

5331-01-501-2434 (5616140-173)

NIIN: 01-501-2434
In stock
NSN: 5331-01-501-2434
FSC Code: 5331
MPN: 5616140173

5331-01-501-2481 (5616140-249)

NIIN: 01-501-2481
In stock
NSN: 5331-01-501-2481
FSC Code: 5331
MPN: 5616140249

5331-01-501-2714 (5616140-359)

NIIN: 01-501-2714
In stock
NSN: 5331-01-501-2714
FSC Code: 5331
MPN: 5616140359

5331-01-501-2429 (5616140-208)

NIIN: 01-501-2429
In stock
NSN: 5331-01-501-2429
FSC Code: 5331
MPN: 5616140208

5331-01-501-2487 (5616140-129)

NIIN: 01-501-2487
In stock
NSN: 5331-01-501-2487
FSC Code: 5331
MPN: 5616140129

5331-01-502-7875 (561-519-9001)

NIIN: 01-502-7875
In stock
NSN: 5331-01-502-7875
FSC Code: 5331
MPN: 5615199001

5331-01-501-2303 (5616140-113)

NIIN: 01-501-2303
In stock
NSN: 5331-01-501-2303
FSC Code: 5331
MPN: 5616140113

5331-01-501-2405 (5616140-009)

NIIN: 01-501-2405
In stock
NSN: 5331-01-501-2405
FSC Code: 5331
MPN: 5616140009

5331-01-501-2450 (5616140-020)

NIIN: 01-501-2450
In stock
NSN: 5331-01-501-2450
FSC Code: 5331
MPN: 5616140020

5331-01-501-2400 (5616140-011)

NIIN: 01-501-2400
In stock
NSN: 5331-01-501-2400
FSC Code: 5331
MPN: 5616140011

5331-01-501-2715 (5616140-125)

NIIN: 01-501-2715
In stock
NSN: 5331-01-501-2715
FSC Code: 5331
MPN: 5616140125

5331-01-429-5102 (561-8515-0012)

NIIN: 01-429-5102
In stock
NSN: 5331-01-429-5102
FSC Code: 5331
MPN: 56185150012

5331-01-429-5094 (561-8515-0902)

NIIN: 01-429-5094
In stock
NSN: 5331-01-429-5094
FSC Code: 5331
MPN: 56185150902

5331-01-501-2463 (5616140-013)

NIIN: 01-501-2463
In stock
NSN: 5331-01-501-2463
FSC Code: 5331
MPN: 5616140013

5331-01-538-5801 (5615-3INPC12)

NIIN: 01-538-5801
In stock
NSN: 5331-01-538-5801
FSC Code: 5331
MPN: 56153INPC12

5331-01-370-8827 (561-8515-0026)

NIIN: 01-370-8827
In stock
NSN: 5331-01-370-8827
FSC Code: 5331
MPN: 56185150026

5331-01-350-3171 (561-515-0011)

NIIN: 01-350-3171
In stock
NSN: 5331-01-350-3171
FSC Code: 5331
MPN: 5615150011

5331-12-324-8650 (5-613 N674-70 OR111X1785613N67470)

NIIN: 12-324-8650
In stock
NSN: 5331-12-324-8650
FSC Code: 5331
MPN: 5613N67470OR111X1785613N67470

5331-01-421-1912 (560-636-041)

NIIN: 01-421-1912
In stock
NSN: 5331-01-421-1912
FSC Code: 5331
MPN: 560636041

5331-01-421-1932 (560-636-009)

NIIN: 01-421-1932
In stock
NSN: 5331-01-421-1932
FSC Code: 5331
MPN: 560636009

5331-00-003-0588 (A51P60473-11)

NIIN: 00-003-0588
In stock
NSN: 5331-00-003-0588
FSC Code: 5331
MPN: A51P6047311