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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.

5331-01-063-6434 (41003241-001)

NIIN: 01-063-6434
In stock
NSN: 5331-01-063-6434
FSC Code: 5331
MPN: 41003241001

5331-01-512-7820 (13973PC56)

NIIN: 01-512-7820
In stock
NSN: 5331-01-512-7820
FSC Code: 5331
MPN: 13973PC56

5331-01-512-7883 (13973PC13)

NIIN: 01-512-7883
In stock
NSN: 5331-01-512-7883
FSC Code: 5331
MPN: 13973PC13

5331-01-512-7903 (13972PC85)

NIIN: 01-512-7903
In stock
NSN: 5331-01-512-7903
FSC Code: 5331
MPN: 13972PC85

5331-01-512-7830 (13972PC81)

NIIN: 01-512-7830
In stock
NSN: 5331-01-512-7830
FSC Code: 5331
MPN: 13972PC81

5331-01-512-7848 (13972PC17)

NIIN: 01-512-7848
In stock
NSN: 5331-01-512-7848
FSC Code: 5331
MPN: 13972PC17

5331-01-512-7898 (13972PC65)

NIIN: 01-512-7898
In stock
NSN: 5331-01-512-7898
FSC Code: 5331
MPN: 13972PC65

5331-01-510-1378 (13964PC5)

NIIN: 01-510-1378
In stock
NSN: 5331-01-510-1378
FSC Code: 5331
MPN: 13964PC5

5331-01-510-1375 (13964PC4)

NIIN: 01-510-1375
In stock
NSN: 5331-01-510-1375
FSC Code: 5331
MPN: 13964PC4

5331-01-433-9390 (2-046-N103-40)

NIIN: 01-433-9390
In stock
NSN: 5331-01-433-9390
FSC Code: 5331
MPN: 2046N10340

5331-00-937-7920 (410-0014-010)

NIIN: 00-937-7920
In stock
NSN: 5331-00-937-7920
FSC Code: 5331
MPN: 4100014010

5331-00-747-1704 (40X940)

NIIN: 00-747-1704
In stock
NSN: 5331-00-747-1704
FSC Code: 5331
MPN: 40X940

5331-00-138-4149 (40X800)

NIIN: 00-138-4149
In stock
NSN: 5331-00-138-4149
FSC Code: 5331
MPN: 40X800

5331-01-416-5308 (139-517)

NIIN: 01-416-5308
In stock
NSN: 5331-01-416-5308
FSC Code: 5331
MPN: 139517

5331-01-542-4625 (13946PC46)

NIIN: 01-542-4625
In stock
NSN: 5331-01-542-4625
FSC Code: 5331
MPN: 13946PC46

5331-01-542-4690 (13943PC30)

NIIN: 01-542-4690
In stock
NSN: 5331-01-542-4690
FSC Code: 5331
MPN: 13943PC30

5331-01-387-8618 (O0139-19457)

NIIN: 01-387-8618
In stock
NSN: 5331-01-387-8618
FSC Code: 5331
MPN: O013919457

5331-01-507-2334 (1391-552)

NIIN: 01-507-2334
In stock
NSN: 5331-01-507-2334
FSC Code: 5331
MPN: 1391552

5331-00-812-7738 (40NTTYPEAF)

NIIN: 00-812-7738
In stock
NSN: 5331-00-812-7738
FSC Code: 5331
MPN: 40NTTYPEAF

5331-14-373-3030 (13900D5000A21A7)

NIIN: 14-373-3030
In stock
NSN: 5331-14-373-3030
FSC Code: 5331
MPN: 13900D5000A21A7

5331-00-815-3605 (40A909)

NIIN: 00-815-3605
In stock
NSN: 5331-00-815-3605
FSC Code: 5331
MPN: 40A909

5331-00-059-8827 (40A907)

NIIN: 00-059-8827
In stock
NSN: 5331-00-059-8827
FSC Code: 5331
MPN: 40A907

5331-00-815-3606 (40A517)

NIIN: 00-815-3606
In stock
NSN: 5331-00-815-3606
FSC Code: 5331
MPN: 40A517

5331-01-507-3946 (564-7066613-F188)

NIIN: 01-507-3946
In stock
NSN: 5331-01-507-3946
FSC Code: 5331
MPN: 5647066613F188

5331-01-475-7812 (13857N18-456A)

NIIN: 01-475-7812
In stock
NSN: 5331-01-475-7812
FSC Code: 5331
MPN: 13857N18456A

5331-01-483-4470 (1382-106)

NIIN: 01-483-4470
In stock
NSN: 5331-01-483-4470
FSC Code: 5331
MPN: 1382106

5331-01-201-0150 (4091-00902)

NIIN: 01-201-0150
In stock
NSN: 5331-01-201-0150
FSC Code: 5331
MPN: 409100902

5331-01-500-2572 (1380580B01)

NIIN: 01-500-2572
In stock
NSN: 5331-01-500-2572
FSC Code: 5331
MPN: 1380580B01

5331-01-500-2574 (1380507B04)

NIIN: 01-500-2574
In stock
NSN: 5331-01-500-2574
FSC Code: 5331
MPN: 1380507B04

5331-01-395-8020 (13804270-0)

NIIN: 01-395-8020
In stock
NSN: 5331-01-395-8020
FSC Code: 5331
MPN: 138042700

5331-01-146-6152 (4087-F)

NIIN: 01-146-6152
In stock
NSN: 5331-01-146-6152
FSC Code: 5331
MPN: 4087F

5331-00-123-9416 (4088-1)

NIIN: 00-123-9416
In stock
NSN: 5331-00-123-9416
FSC Code: 5331
MPN: 40881

5331-99-200-4791 (BSISO3601-1SIZE115)

NIIN: 99-200-4791
In stock
NSN: 5331-99-200-4791
FSC Code: 5331
MPN: BSISO36011SIZE115

5331-00-054-6931 (40829-0-05)

NIIN: 00-054-6931
In stock
NSN: 5331-00-054-6931
FSC Code: 5331
MPN: 40829005

5331-01-306-5664 (4076T97P01)

NIIN: 01-306-5664
In stock
NSN: 5331-01-306-5664
FSC Code: 5331
MPN: 4076T97P01

5331-01-526-6088 (137-547)

NIIN: 01-526-6088
In stock
NSN: 5331-01-526-6088
FSC Code: 5331
MPN: 137547

5331-00-630-4240 (4075-075PC140)

NIIN: 00-630-4240
In stock
NSN: 5331-00-630-4240
FSC Code: 5331
MPN: 4075075PC140

5331-01-359-3549 (1374PD1030)

NIIN: 01-359-3549
In stock
NSN: 5331-01-359-3549
FSC Code: 5331
MPN: 1374PD1030

5331-01-072-6672 (4074T58P47)

NIIN: 01-072-6672
In stock
NSN: 5331-01-072-6672
FSC Code: 5331
MPN: 4074T58P47

5331-01-216-6002 (4074T58P03)

NIIN: 01-216-6002
In stock
NSN: 5331-01-216-6002
FSC Code: 5331
MPN: 4074T58P03

5331-01-215-6747 (4074T58P11)

NIIN: 01-215-6747
In stock
NSN: 5331-01-215-6747
FSC Code: 5331
MPN: 4074T58P11

5331-01-328-9905 (4074T58P13)

NIIN: 01-328-9905
In stock
NSN: 5331-01-328-9905
FSC Code: 5331
MPN: 4074T58P13

5331-01-514-2132 (137-3623)

NIIN: 01-514-2132
In stock
NSN: 5331-01-514-2132
FSC Code: 5331
MPN: 1373623

5331-01-130-6585 (4071T88)

NIIN: 01-130-6585
In stock
NSN: 5331-01-130-6585
FSC Code: 5331
MPN: 4071T88

5331-01-130-6584 (4071T88P01)

NIIN: 01-130-6584
In stock
NSN: 5331-01-130-6584
FSC Code: 5331
MPN: 4071T88P01

5331-99-200-4796 (BSISO3601-1SIZE216)

NIIN: 99-200-4796
In stock
NSN: 5331-99-200-4796
FSC Code: 5331
MPN: BSISO36011SIZE216

5331-12-178-6274 (5331PL0890504)

NIIN: 12-178-6274
In stock
NSN: 5331-12-178-6274
FSC Code: 5331
MPN: 5331PL0890504

5331-00-883-3571 (406705-1)

NIIN: 00-883-3571
In stock
NSN: 5331-00-883-3571
FSC Code: 5331
MPN: 4067051