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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.

5331-01-447-0791 (1-055)

NIIN: 01-447-0791
In stock
NSN: 5331-01-447-0791
FSC Code: 5331
MPN: 1055

5331-01-201-0153 (316135-08-9)

NIIN: 01-201-0153
In stock
NSN: 5331-01-201-0153
FSC Code: 5331
MPN: 316135089

5331-01-313-7872 (316135-01-1)

NIIN: 01-313-7872
In stock
NSN: 5331-01-313-7872
FSC Code: 5331
MPN: 316135011

5331-01-283-7472 (3160-7)

NIIN: 01-283-7472
In stock
NSN: 5331-01-283-7472
FSC Code: 5331
MPN: 31607

5331-00-291-3287 (315S26)

NIIN: 00-291-3287
In stock
NSN: 5331-00-291-3287
FSC Code: 5331
MPN: 315S26

5331-00-263-4601 (315S3)

NIIN: 00-263-4601
In stock
NSN: 5331-00-263-4601
FSC Code: 5331
MPN: 315S3

5331-00-263-4599 (315S5)

NIIN: 00-263-4599
In stock
NSN: 5331-00-263-4599
FSC Code: 5331
MPN: 315S5

5331-00-263-4588 (315S9)

NIIN: 00-263-4588
In stock
NSN: 5331-00-263-4588
FSC Code: 5331
MPN: 315S9

5331-00-263-4584 (315S21)

NIIN: 00-263-4584
In stock
NSN: 5331-00-263-4584
FSC Code: 5331
MPN: 315S21

5331-00-263-4593 (315S17)

NIIN: 00-263-4593
In stock
NSN: 5331-00-263-4593
FSC Code: 5331
MPN: 315S17

5331-00-531-4566 (3-1549-3-26)

NIIN: 00-531-4566
In stock
NSN: 5331-00-531-4566
FSC Code: 5331
MPN: 31549326

5331-01-232-2373 (31544-4CSF7-1FITEM12)

NIIN: 01-232-2373
In stock
NSN: 5331-01-232-2373
FSC Code: 5331
MPN: 315444CSF71FITEM12

5331-01-277-2191 (315349-000)

NIIN: 01-277-2191
In stock
NSN: 5331-01-277-2191
FSC Code: 5331
MPN: 315349000

5331-01-182-5515 (31525-9)

NIIN: 01-182-5515
In stock
NSN: 5331-01-182-5515
FSC Code: 5331
MPN: 315259

5331-01-182-5513 (31525-20)

NIIN: 01-182-5513
In stock
NSN: 5331-01-182-5513
FSC Code: 5331
MPN: 3152520

5331-01-058-4562 (31525-003)

NIIN: 01-058-4562
In stock
NSN: 5331-01-058-4562
FSC Code: 5331
MPN: 31525003

5331-01-293-8698 (315-10031-3001)

NIIN: 01-293-8698
In stock
NSN: 5331-01-293-8698
FSC Code: 5331
MPN: 315100313001

5331-01-459-0652 (10520-036)

NIIN: 01-459-0652
In stock
NSN: 5331-01-459-0652
FSC Code: 5331
MPN: 10520036

5331-01-508-4249 (1051110P-1)

NIIN: 01-508-4249
In stock
NSN: 5331-01-508-4249
FSC Code: 5331
MPN: 1051110P1

5331-01-009-6733 (31500-7029)

NIIN: 01-009-6733
In stock
NSN: 5331-01-009-6733
FSC Code: 5331
MPN: 315007029

5331-01-099-4704 (3-14N219-7)

NIIN: 01-099-4704
In stock
NSN: 5331-01-099-4704
FSC Code: 5331
MPN: 314N2197

5331-00-435-0446 (3-14E515-8)

NIIN: 00-435-0446
In stock
NSN: 5331-00-435-0446
FSC Code: 5331
MPN: 314E5158

5331-01-007-4913 (3-14C147-7)

NIIN: 01-007-4913
In stock
NSN: 5331-01-007-4913
FSC Code: 5331
MPN: 314C1477

5331-01-284-6653 (31440062-124)

NIIN: 01-284-6653
In stock
NSN: 5331-01-284-6653
FSC Code: 5331
MPN: 31440062124

5331-01-244-2117 (31440062-904)

NIIN: 01-244-2117
In stock
NSN: 5331-01-244-2117
FSC Code: 5331
MPN: 31440062904

5331-01-284-7870 (31440064-029)

NIIN: 01-284-7870
In stock
NSN: 5331-01-284-7870
FSC Code: 5331
MPN: 31440064029

5331-01-244-2116 (31440062-015)

NIIN: 01-244-2116
In stock
NSN: 5331-01-244-2116
FSC Code: 5331
MPN: 31440062015

5331-01-284-7869 (31440064-012)

NIIN: 01-284-7869
In stock
NSN: 5331-01-284-7869
FSC Code: 5331
MPN: 31440064012

5331-01-372-3872 (104X41A)

NIIN: 01-372-3872
In stock
NSN: 5331-01-372-3872
FSC Code: 5331
MPN: 104X41A

5331-00-936-9568 (3143-14-1)

NIIN: 00-936-9568
In stock
NSN: 5331-00-936-9568
FSC Code: 5331
MPN: 3143141

5331-01-417-7762 (1050)

NIIN: 01-417-7762
In stock
NSN: 5331-01-417-7762
FSC Code: 5331
MPN: 1050

5331-01-378-7194 (201275CITEM1)

NIIN: 01-378-7194
In stock
NSN: 5331-01-378-7194
FSC Code: 5331
MPN: 201275CITEM1

5331-01-381-2547 (201275C)

NIIN: 01-381-2547
In stock
NSN: 5331-01-381-2547
FSC Code: 5331
MPN: 201275C

5331-01-567-9775 (10-493)

NIIN: 01-567-9775
In stock
NSN: 5331-01-567-9775
FSC Code: 5331
MPN: 10493

5331-01-394-7919 (10491-4343)

NIIN: 01-394-7919
In stock
NSN: 5331-01-394-7919
FSC Code: 5331
MPN: 104914343

5331-01-029-1818 (3-135-9)

NIIN: 01-029-1818
In stock
NSN: 5331-01-029-1818
FSC Code: 5331
MPN: 31359

5331-00-005-8547 (31352-011)

NIIN: 00-005-8547
In stock
NSN: 5331-00-005-8547
FSC Code: 5331
MPN: 31352011

5331-01-342-2539 (104-7)

NIIN: 01-342-2539
In stock
NSN: 5331-01-342-2539
FSC Code: 5331
MPN: 1047

5331-01-029-1823 (3-135-3)

NIIN: 01-029-1823
In stock
NSN: 5331-01-029-1823
FSC Code: 5331
MPN: 31353

5331-00-599-0711 (3135254REVAPC19)

NIIN: 00-599-0711
In stock
NSN: 5331-00-599-0711
FSC Code: 5331
MPN: 3135254REVAPC19

5331-01-029-1816 (3-135-19)

NIIN: 01-029-1816
In stock
NSN: 5331-01-029-1816
FSC Code: 5331
MPN: 313519

5331-00-780-8982 (31350-225)

NIIN: 00-780-8982
In stock
NSN: 5331-00-780-8982
FSC Code: 5331
MPN: 31350225

5331-01-367-2361 (1045Z2999)

NIIN: 01-367-2361
In stock
NSN: 5331-01-367-2361
FSC Code: 5331
MPN: 1045Z2999

5331-01-210-3026 (3134-212)

NIIN: 01-210-3026
In stock
NSN: 5331-01-210-3026
FSC Code: 5331
MPN: 3134212

5331-01-333-5181 (3132-193-R1)

NIIN: 01-333-5181
In stock
NSN: 5331-01-333-5181
FSC Code: 5331
MPN: 3132193R1

5331-01-396-7240 (1045)

NIIN: 01-396-7240
In stock
NSN: 5331-01-396-7240
FSC Code: 5331
MPN: 1045

5331-01-433-9202 (1043V0307)

NIIN: 01-433-9202
In stock
NSN: 5331-01-433-9202
FSC Code: 5331
MPN: 1043V0307

5331-01-422-2153 (1043V0216)

NIIN: 01-422-2153
In stock
NSN: 5331-01-422-2153
FSC Code: 5331
MPN: 1043V0216