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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.

5331-01-313-4947 (H239-25)

NIIN: 01-313-4947
In stock
NSN: 5331-01-313-4947
FSC Code: 5331
MPN: H23925

5331-00-923-6038 (H23435-6)

NIIN: 00-923-6038
In stock
NSN: 5331-00-923-6038
FSC Code: 5331
MPN: H234356

5331-01-298-4723 (H20-P17)

NIIN: 01-298-4723
In stock
NSN: 5331-01-298-4723
FSC Code: 5331
MPN: H20P17

5331-01-298-4722 (H20-P16)

NIIN: 01-298-4722
In stock
NSN: 5331-01-298-4722
FSC Code: 5331
MPN: H20P16

5331-01-198-8101 (H-20481)

NIIN: 01-198-8101
In stock
NSN: 5331-01-198-8101
FSC Code: 5331
MPN: H20481

5331-01-021-9208 (H20106J001PC63)

NIIN: 01-021-9208
In stock
NSN: 5331-01-021-9208
FSC Code: 5331
MPN: H20106J001PC63

5331-01-255-0140 (H20065-U-001)

NIIN: 01-255-0140
In stock
NSN: 5331-01-255-0140
FSC Code: 5331
MPN: H20065U001

5331-01-190-4486 (H20087C001)

NIIN: 01-190-4486
In stock
NSN: 5331-01-190-4486
FSC Code: 5331
MPN: H20087C001

5331-01-176-7937 (H-19339-K)

NIIN: 01-176-7937
In stock
NSN: 5331-01-176-7937
FSC Code: 5331
MPN: H19339K

5331-01-176-7941 (H-19664-T)

NIIN: 01-176-7941
In stock
NSN: 5331-01-176-7941
FSC Code: 5331
MPN: H19664T

5331-01-176-7936 (H-19339-K)

NIIN: 01-176-7936
In stock
NSN: 5331-01-176-7936
FSC Code: 5331
MPN: H19339K

5331-01-154-9460 (H180B001)

NIIN: 01-154-9460
In stock
NSN: 5331-01-154-9460
FSC Code: 5331
MPN: H180B001

5331-01-138-5265 (H180J001)

NIIN: 01-138-5265
In stock
NSN: 5331-01-138-5265
FSC Code: 5331
MPN: H180J001

5331-00-400-3509 (H180-026)

NIIN: 00-400-3509
In stock
NSN: 5331-00-400-3509
FSC Code: 5331
MPN: H180026

5331-00-400-3511 (H180-230)

NIIN: 00-400-3511
In stock
NSN: 5331-00-400-3511
FSC Code: 5331
MPN: H180230

5331-00-400-3510 (H180-210)

NIIN: 00-400-3510
In stock
NSN: 5331-00-400-3510
FSC Code: 5331
MPN: H180210

5331-00-400-3508 (H180-008)

NIIN: 00-400-3508
In stock
NSN: 5331-00-400-3508
FSC Code: 5331
MPN: H180008

5331-01-446-4153 (D3115429A)

NIIN: 01-446-4153
In stock
NSN: 5331-01-446-4153
FSC Code: 5331
MPN: D3115429A

5331-01-383-3325 (7773-001)

NIIN: 01-383-3325
In stock
NSN: 5331-01-383-3325
FSC Code: 5331
MPN: 7773001

5331-01-333-3734 (H1614-82A)

NIIN: 01-333-3734
In stock
NSN: 5331-01-333-3734
FSC Code: 5331
MPN: H161482A

5331-01-004-6827 (H15330-5)

NIIN: 01-004-6827
In stock
NSN: 5331-01-004-6827
FSC Code: 5331
MPN: H153305

5331-01-313-4951 (H145-64)

NIIN: 01-313-4951
In stock
NSN: 5331-01-313-4951
FSC Code: 5331
MPN: H14564

5331-01-313-5720 (H145-26)

NIIN: 01-313-5720
In stock
NSN: 5331-01-313-5720
FSC Code: 5331
MPN: H14526

5331-01-477-2415 (7-755-908000)

NIIN: 01-477-2415
In stock
NSN: 5331-01-477-2415
FSC Code: 5331
MPN: 7755908000

5331-01-470-1699 (7-755-910002)

NIIN: 01-470-1699
In stock
NSN: 5331-01-470-1699
FSC Code: 5331
MPN: 7755910002

5331-01-420-5128 (7-755-912003)

NIIN: 01-420-5128
In stock
NSN: 5331-01-420-5128
FSC Code: 5331
MPN: 7755912003

5331-01-473-0359 (7-755-920000)

NIIN: 01-473-0359
In stock
NSN: 5331-01-473-0359
FSC Code: 5331
MPN: 7755920000

5331-01-473-0358 (7-755-914000)

NIIN: 01-473-0358
In stock
NSN: 5331-01-473-0358
FSC Code: 5331
MPN: 7755914000

5331-01-473-0394 (7-755-906000)

NIIN: 01-473-0394
In stock
NSN: 5331-01-473-0394
FSC Code: 5331
MPN: 7755906000

5331-01-470-1753 (7-755-171000)

NIIN: 01-470-1753
In stock
NSN: 5331-01-470-1753
FSC Code: 5331
MPN: 7755171000

5331-01-470-1296 (7-755-260000)

NIIN: 01-470-1296
In stock
NSN: 5331-01-470-1296
FSC Code: 5331
MPN: 7755260000

5331-00-575-5931 (H137-69)

NIIN: 00-575-5931
In stock
NSN: 5331-00-575-5931
FSC Code: 5331
MPN: H13769

5331-01-413-4514 (7-755-210000)

NIIN: 01-413-4514
In stock
NSN: 5331-01-413-4514
FSC Code: 5331
MPN: 7755210000

5331-01-470-1747 (7-755-166000)

NIIN: 01-470-1747
In stock
NSN: 5331-01-470-1747
FSC Code: 5331
MPN: 7755166000

5331-01-470-3147 (7-7555-155000)

NIIN: 01-470-3147
In stock
NSN: 5331-01-470-3147
FSC Code: 5331
MPN: 77555155000

5331-01-313-5719 (H136-54)

NIIN: 01-313-5719
In stock
NSN: 5331-01-313-5719
FSC Code: 5331
MPN: H13654

5331-00-630-8199 (H135-88)

NIIN: 00-630-8199
In stock
NSN: 5331-00-630-8199
FSC Code: 5331
MPN: H13588

5331-00-275-3499 (H135-021)

NIIN: 00-275-3499
In stock
NSN: 5331-00-275-3499
FSC Code: 5331
MPN: H135021

5331-01-250-6729 (H135-17)

NIIN: 01-250-6729
In stock
NSN: 5331-01-250-6729
FSC Code: 5331
MPN: H13517

5331-01-313-4949 (H135-27)

NIIN: 01-313-4949
In stock
NSN: 5331-01-313-4949
FSC Code: 5331
MPN: H13527

5331-01-388-1289 (77-545-2-1113)

NIIN: 01-388-1289
In stock
NSN: 5331-01-388-1289
FSC Code: 5331
MPN: 7754521113

5331-01-313-4950 (H134-113)

NIIN: 01-313-4950
In stock
NSN: 5331-01-313-4950
FSC Code: 5331
MPN: H134113

5331-01-473-0865 (7-754-000137)

NIIN: 01-473-0865
In stock
NSN: 5331-01-473-0865
FSC Code: 5331
MPN: 7754000137

5331-01-470-1690 (7-754-000140)

NIIN: 01-470-1690
In stock
NSN: 5331-01-470-1690
FSC Code: 5331
MPN: 7754000140

5331-01-313-4948 (H134-14)

NIIN: 01-313-4948
In stock
NSN: 5331-01-313-4948
FSC Code: 5331
MPN: H13414

5331-01-470-1697 (7-754-000143)

NIIN: 01-470-1697
In stock
NSN: 5331-01-470-1697
FSC Code: 5331
MPN: 7754000143

5331-01-460-5562 (7-754-000110)

NIIN: 01-460-5562
In stock
NSN: 5331-01-460-5562
FSC Code: 5331
MPN: 7754000110

5331-01-473-0828 (7-754-000138)

NIIN: 01-473-0828
In stock
NSN: 5331-01-473-0828
FSC Code: 5331
MPN: 7754000138