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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.

5331-01-502-7875 (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

5331-01-421-1925 (560-647-008)

NIIN: 01-421-1925
In stock
NSN: 5331-01-421-1925
FSC Code: 5331
MPN: 560647008

5331-01-421-1913 (560-636-007)

NIIN: 01-421-1913
In stock
NSN: 5331-01-421-1913
FSC Code: 5331
MPN: 560636007

5331-01-421-1922 (560-636-011)

NIIN: 01-421-1922
In stock
NSN: 5331-01-421-1922
FSC Code: 5331
MPN: 560636011

5331-01-421-1923 (560-636-010)

NIIN: 01-421-1923
In stock
NSN: 5331-01-421-1923
FSC Code: 5331
MPN: 560636010

5331-01-421-1926 (560-636-008)

NIIN: 01-421-1926
In stock
NSN: 5331-01-421-1926
FSC Code: 5331
MPN: 560636008

5331-01-421-1915 (560-645-001)

NIIN: 01-421-1915
In stock
NSN: 5331-01-421-1915
FSC Code: 5331
MPN: 560645001

5331-01-422-5934 (560-636-015)

NIIN: 01-422-5934
In stock
NSN: 5331-01-422-5934
FSC Code: 5331
MPN: 560636015

5331-01-421-1914 (560-636-002)

NIIN: 01-421-1914
In stock
NSN: 5331-01-421-1914
FSC Code: 5331
MPN: 560636002

5331-01-421-1921 (560-636-005)

NIIN: 01-421-1921
In stock
NSN: 5331-01-421-1921
FSC Code: 5331
MPN: 560636005

5331-01-421-1928 (560-636-012)

NIIN: 01-421-1928
In stock
NSN: 5331-01-421-1928
FSC Code: 5331
MPN: 560636012

5331-01-421-1924 (560-636-004)

NIIN: 01-421-1924
In stock
NSN: 5331-01-421-1924
FSC Code: 5331
MPN: 560636004

5331-01-422-5935 (560-634-011)

NIIN: 01-422-5935
In stock
NSN: 5331-01-422-5935
FSC Code: 5331
MPN: 560634011

5331-01-424-3368 (560-636-001)

NIIN: 01-424-3368
In stock
NSN: 5331-01-424-3368
FSC Code: 5331
MPN: 560636001

5331-01-567-1470 (560-105-360)

NIIN: 01-567-1470
In stock
NSN: 5331-01-567-1470
FSC Code: 5331
MPN: 560105360

5331-01-567-1478 (560-029-360)

NIIN: 01-567-1478
In stock
NSN: 5331-01-567-1478
FSC Code: 5331
MPN: 560029360

5331-01-428-3355 (560.033.360)

NIIN: 01-428-3355
In stock
NSN: 5331-01-428-3355
FSC Code: 5331
MPN: 560033360

5331-01-531-0706 (560005V)

NIIN: 01-531-0706
In stock
NSN: 5331-01-531-0706
FSC Code: 5331
MPN: 560005V

5331-00-551-4211 (A51902PC33)

NIIN: 00-551-4211
In stock
NSN: 5331-00-551-4211
FSC Code: 5331
MPN: A51902PC33

5331-01-101-8172 (A51916)

NIIN: 01-101-8172
In stock
NSN: 5331-01-101-8172
FSC Code: 5331
MPN: A51916

5331-00-427-7241 (A51841)

NIIN: 00-427-7241
In stock
NSN: 5331-00-427-7241
FSC Code: 5331
MPN: A51841

5331-00-780-4931 (A51744)

NIIN: 00-780-4931
In stock
NSN: 5331-00-780-4931
FSC Code: 5331
MPN: A51744

5331-00-551-4216 (A51228ITEM11)

NIIN: 00-551-4216
In stock
NSN: 5331-00-551-4216
FSC Code: 5331
MPN: A51228ITEM11

5331-00-551-4214 (A51228ITEM4)

NIIN: 00-551-4214
In stock
NSN: 5331-00-551-4214
FSC Code: 5331
MPN: A51228ITEM4

5331-00-005-6149 (A51030)

NIIN: 00-005-6149
In stock
NSN: 5331-00-005-6149
FSC Code: 5331
MPN: A51030

5331-00-401-1530 (A51062)

NIIN: 00-401-1530
In stock
NSN: 5331-00-401-1530
FSC Code: 5331
MPN: A51062

5331-01-154-6029 (A-50862-1)

NIIN: 01-154-6029
In stock
NSN: 5331-01-154-6029
FSC Code: 5331
MPN: A508621

5331-01-173-6609 (A50862-2)

NIIN: 01-173-6609
In stock
NSN: 5331-01-173-6609
FSC Code: 5331
MPN: A508622

5331-00-340-6920 (A50582)

NIIN: 00-340-6920
In stock
NSN: 5331-00-340-6920
FSC Code: 5331
MPN: A50582

5331-01-260-4691 (A50412MRK)

NIIN: 01-260-4691
In stock
NSN: 5331-01-260-4691
FSC Code: 5331
MPN: A50412MRK

5331-00-411-9184 (A50055)

NIIN: 00-411-9184
In stock
NSN: 5331-00-411-9184
FSC Code: 5331
MPN: A50055

5331-01-276-8438 (A-5)

NIIN: 01-276-8438
In stock
NSN: 5331-01-276-8438
FSC Code: 5331
MPN: A5

5331-01-288-6600 (A49769-5MRV)

NIIN: 01-288-6600
In stock
NSN: 5331-01-288-6600
FSC Code: 5331
MPN: A497695MRV