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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.

5331-99-471-2968 (7960-0453)

NIIN: 99-471-2968
In stock
NSN: 5331-99-471-2968
FSC Code: 5331
MPN: 79600453

5331-99-125-7818 (7960-0203)

NIIN: 99-125-7818
In stock
NSN: 5331-99-125-7818
FSC Code: 5331
MPN: 79600203

5331-01-354-7660 (7960019-00)

NIIN: 01-354-7660
In stock
NSN: 5331-01-354-7660
FSC Code: 5331
MPN: 796001900

5331-01-287-8820 (HT-15210)

NIIN: 01-287-8820
In stock
NSN: 5331-01-287-8820
FSC Code: 5331
MPN: HT15210

5331-01-287-8819 (HT-15210)

NIIN: 01-287-8819
In stock
NSN: 5331-01-287-8819
FSC Code: 5331
MPN: HT15210

5331-01-498-2924 (794444-1(S))

NIIN: 01-498-2924
In stock
NSN: 5331-01-498-2924
FSC Code: 5331
MPN: 7944441S

5331-01-019-5838 (HS232-9-246)

NIIN: 01-019-5838
In stock
NSN: 5331-01-019-5838
FSC Code: 5331
MPN: HS2329246

5331-00-576-9577 (HS231IG230)

NIIN: 00-576-9577
In stock
NSN: 5331-00-576-9577
FSC Code: 5331
MPN: HS231IG230

5331-01-274-5603 (HS-3)

NIIN: 01-274-5603
In stock
NSN: 5331-01-274-5603
FSC Code: 5331
MPN: HS3

5331-00-576-8130 (HS227Z1)

NIIN: 00-576-8130
In stock
NSN: 5331-00-576-8130
FSC Code: 5331
MPN: HS227Z1

5331-00-297-6040 (HS230Z2)

NIIN: 00-297-6040
In stock
NSN: 5331-00-297-6040
FSC Code: 5331
MPN: HS230Z2

5331-00-599-2823 (HS232-9-018)

NIIN: 00-599-2823
In stock
NSN: 5331-00-599-2823
FSC Code: 5331
MPN: HS2329018

5331-00-794-7069 (HS232-3A012)

NIIN: 00-794-7069
In stock
NSN: 5331-00-794-7069
FSC Code: 5331
MPN: HS2323A012

5331-00-684-3407 (HS227Z5)

NIIN: 00-684-3407
In stock
NSN: 5331-00-684-3407
FSC Code: 5331
MPN: HS227Z5

5331-00-141-7976 (HS227D27)

NIIN: 00-141-7976
In stock
NSN: 5331-00-141-7976
FSC Code: 5331
MPN: HS227D27

5331-00-297-9907 (HS227D23)

NIIN: 00-297-9907
In stock
NSN: 5331-00-297-9907
FSC Code: 5331
MPN: HS227D23

5331-00-141-7979 (HS227D5)

NIIN: 00-141-7979
In stock
NSN: 5331-00-141-7979
FSC Code: 5331
MPN: HS227D5

5331-01-488-5550 (792033-001)

NIIN: 01-488-5550
In stock
NSN: 5331-01-488-5550
FSC Code: 5331
MPN: 792033001

5331-00-434-4827 (HS227D12)

NIIN: 00-434-4827
In stock
NSN: 5331-00-434-4827
FSC Code: 5331
MPN: HS227D12

5331-01-559-1770 (791-NES-136A-90(NEW))

NIIN: 01-559-1770
In stock
NSN: 5331-01-559-1770
FSC Code: 5331
MPN: 791NES136A90NEW

5331-01-468-4274 (791-NES-033A-90)

NIIN: 01-468-4274
In stock
NSN: 5331-01-468-4274
FSC Code: 5331
MPN: 791NES033A90

5331-01-559-1742 (791-NES-018A-90(NEW))

NIIN: 01-559-1742
In stock
NSN: 5331-01-559-1742
FSC Code: 5331
MPN: 791NES018A90NEW

5331-01-468-5841 (791-NES-163A-90)

NIIN: 01-468-5841
In stock
NSN: 5331-01-468-5841
FSC Code: 5331
MPN: 791NES163A90

5331-01-559-1804 (791-NES-012A-90(NEW))

NIIN: 01-559-1804
In stock
NSN: 5331-01-559-1804
FSC Code: 5331
MPN: 791NES012A90NEW

5331-01-349-5539 (791-NES128A-90)

NIIN: 01-349-5539
In stock
NSN: 5331-01-349-5539
FSC Code: 5331
MPN: 791NES128A90

5331-01-349-1746 (791-NES-018A90)

NIIN: 01-349-1746
In stock
NSN: 5331-01-349-1746
FSC Code: 5331
MPN: 791NES018A90

5331-01-559-1803 (791-NES-128A-90(NEW))

NIIN: 01-559-1803
In stock
NSN: 5331-01-559-1803
FSC Code: 5331
MPN: 791NES128A90NEW

5331-01-254-7128 (HS012-342)

NIIN: 01-254-7128
In stock
NSN: 5331-01-254-7128
FSC Code: 5331
MPN: HS012342

5331-00-849-5956 (HPS21-008)

NIIN: 00-849-5956
In stock
NSN: 5331-00-849-5956
FSC Code: 5331
MPN: HPS21008

5331-00-610-5004 (HPS21-007)

NIIN: 00-610-5004
In stock
NSN: 5331-00-610-5004
FSC Code: 5331
MPN: HPS21007

5331-00-730-6298 (HPC133-08-5-26)

NIIN: 00-730-6298
In stock
NSN: 5331-00-730-6298
FSC Code: 5331
MPN: HPC13308526

5331-01-086-3509 (HP985903-1)

NIIN: 01-086-3509
In stock
NSN: 5331-01-086-3509
FSC Code: 5331
MPN: HP9859031

5331-01-123-7032 (HP54A)

NIIN: 01-123-7032
In stock
NSN: 5331-01-123-7032
FSC Code: 5331
MPN: HP54A

5331-01-218-1187 (HP506Z10)

NIIN: 01-218-1187
In stock
NSN: 5331-01-218-1187
FSC Code: 5331
MPN: HP506Z10

5331-01-190-1857 (HP501Z5B)

NIIN: 01-190-1857
In stock
NSN: 5331-01-190-1857
FSC Code: 5331
MPN: HP501Z5B

5331-01-190-1858 (HP501Z7BMIL)

NIIN: 01-190-1858
In stock
NSN: 5331-01-190-1858
FSC Code: 5331
MPN: HP501Z7BMIL

5331-01-216-9890 (HP500-021-1)

NIIN: 01-216-9890
In stock
NSN: 5331-01-216-9890
FSC Code: 5331
MPN: HP5000211

5331-00-187-0116 (HP500-018)

NIIN: 00-187-0116
In stock
NSN: 5331-00-187-0116
FSC Code: 5331
MPN: HP500018

5331-01-216-9889 (HP-500-018-1CP)

NIIN: 01-216-9889
In stock
NSN: 5331-01-216-9889
FSC Code: 5331
MPN: HP5000181CP

5331-01-206-8681 (HP2-4724)

NIIN: 01-206-8681
In stock
NSN: 5331-01-206-8681
FSC Code: 5331
MPN: HP24724

5331-01-124-8212 (HP20A)

NIIN: 01-124-8212
In stock
NSN: 5331-01-124-8212
FSC Code: 5331
MPN: HP20A

5331-01-123-3526 (HP23)

NIIN: 01-123-3526
In stock
NSN: 5331-01-123-3526
FSC Code: 5331
MPN: HP23

5331-01-303-8566 (HP0510150ER32A)

NIIN: 01-303-8566
In stock
NSN: 5331-01-303-8566
FSC Code: 5331
MPN: HP0510150ER32A

5331-01-303-8564 (HP0510150ER32A)

NIIN: 01-303-8564
In stock
NSN: 5331-01-303-8564
FSC Code: 5331
MPN: HP0510150ER32A

5331-01-303-8565 (HP0510150ER32A)

NIIN: 01-303-8565
In stock
NSN: 5331-01-303-8565
FSC Code: 5331
MPN: HP0510150ER32A

5331-01-286-9135 (HO-433)

NIIN: 01-286-9135
In stock
NSN: 5331-01-286-9135
FSC Code: 5331
MPN: HO433

5331-01-446-0059 (79008F01)

NIIN: 01-446-0059
In stock
NSN: 5331-01-446-0059
FSC Code: 5331
MPN: 79008F01

5331-01-350-5387 (S301407)

NIIN: 01-350-5387
In stock
NSN: 5331-01-350-5387
FSC Code: 5331
MPN: S301407