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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.

5331-01-571-2397 (AS568A-227)

NIIN: 01-571-2397
In stock
NSN: 5331-01-571-2397
FSC Code: 5331
MPN: AS568A227

5331-01-481-8338 (AS568A-044-40BN)

NIIN: 01-481-8338
In stock
NSN: 5331-01-481-8338
FSC Code: 5331
MPN: AS568A04440BN

5331-01-456-3807 (AS568A-024/CR-70)

NIIN: 01-456-3807
In stock
NSN: 5331-01-456-3807
FSC Code: 5331
MPN: AS568A024CR70

5331-01-570-6469 (AS568A-156)

NIIN: 01-570-6469
In stock
NSN: 5331-01-570-6469
FSC Code: 5331
MPN: AS568A156

5331-01-456-3809 (AS568A-027/CR-70)

NIIN: 01-456-3809
In stock
NSN: 5331-01-456-3809
FSC Code: 5331
MPN: AS568A027CR70

5331-01-458-9403 (AS568-908-C90-90)

NIIN: 01-458-9403
In stock
NSN: 5331-01-458-9403
FSC Code: 5331
MPN: AS568908C9090

5331-01-561-8967 (AS-568A-016S50)

NIIN: 01-561-8967
In stock
NSN: 5331-01-561-8967
FSC Code: 5331
MPN: AS568A016S50

5331-01-455-6379 (AS568A-009/CR-70)

NIIN: 01-455-6379
In stock
NSN: 5331-01-455-6379
FSC Code: 5331
MPN: AS568A009CR70

5331-01-561-8096 (HSHRFS1001-3-474000-5030RS)

NIIN: 01-561-8096
In stock
NSN: 5331-01-561-8096
FSC Code: 5331
MPN: HSHRFS100134740005030RS

5331-01-456-3806 (AS568A-023/MVQ-70)

NIIN: 01-456-3806
In stock
NSN: 5331-01-456-3806
FSC Code: 5331
MPN: AS568A023MVQ70

5331-01-456-3803 (AS568A-017/CR-70)

NIIN: 01-456-3803
In stock
NSN: 5331-01-456-3803
FSC Code: 5331
MPN: AS568A017CR70

5331-01-561-7926 (AS-568A-010S70)

NIIN: 01-561-7926
In stock
NSN: 5331-01-561-7926
FSC Code: 5331
MPN: AS568A010S70

5331-01-534-6797 (AS-568A-006S70)

NIIN: 01-534-6797
In stock
NSN: 5331-01-534-6797
FSC Code: 5331
MPN: AS568A006S70

5331-01-532-0524 (AS-568A-015S70)

NIIN: 01-532-0524
In stock
NSN: 5331-01-532-0524
FSC Code: 5331
MPN: AS568A015S70

5331-01-480-6479 (AS568A-013-70BN)

NIIN: 01-480-6479
In stock
NSN: 5331-01-480-6479
FSC Code: 5331
MPN: AS568A01370BN

5331-01-456-3802 (AS568A-015/CR-70)

NIIN: 01-456-3802
In stock
NSN: 5331-01-456-3802
FSC Code: 5331
MPN: AS568A015CR70

5331-01-456-3799 (AS568A-006/CR-70)

NIIN: 01-456-3799
In stock
NSN: 5331-01-456-3799
FSC Code: 5331
MPN: AS568A006CR70

5331-01-532-7308 (AS-568A-012)

NIIN: 01-532-7308
In stock
NSN: 5331-01-532-7308
FSC Code: 5331
MPN: AS568A012

5331-01-456-3804 (AS568A-014/CR-70)

NIIN: 01-456-3804
In stock
NSN: 5331-01-456-3804
FSC Code: 5331
MPN: AS568A014CR70

5331-01-522-3527 (AS568A-006-70CR)

NIIN: 01-522-3527
In stock
NSN: 5331-01-522-3527
FSC Code: 5331
MPN: AS568A00670CR

5331-01-527-8108 (AS-568A-005)

NIIN: 01-527-8108
In stock
NSN: 5331-01-527-8108
FSC Code: 5331
MPN: AS568A005

5331-01-431-3610 (DNX62FF-8-16)

NIIN: 01-431-3610
In stock
NSN: 5331-01-431-3610
FSC Code: 5331
MPN: DNX62FF816

5331-01-468-5437 (AS568-914AMS3660)

NIIN: 01-468-5437
In stock
NSN: 5331-01-468-5437
FSC Code: 5331
MPN: AS568914AMS3660

5331-01-541-3800 (AS568A-008)

NIIN: 01-541-3800
In stock
NSN: 5331-01-541-3800
FSC Code: 5331
MPN: AS568A008

5331-01-563-1737 (AS568-912)

NIIN: 01-563-1737
In stock
NSN: 5331-01-563-1737
FSC Code: 5331
MPN: AS568912

5331-01-468-5418 (AS568-910AMS3660)

NIIN: 01-468-5418
In stock
NSN: 5331-01-468-5418
FSC Code: 5331
MPN: AS568910AMS3660

5331-01-569-5369 (AS568-912AMS3660)

NIIN: 01-569-5369
In stock
NSN: 5331-01-569-5369
FSC Code: 5331
MPN: AS568912AMS3660

5331-01-458-9397 (AS568-906-C90-90)

NIIN: 01-458-9397
In stock
NSN: 5331-01-458-9397
FSC Code: 5331
MPN: AS568906C9090

5331-01-536-4076 (D4060FFITEM1)

NIIN: 01-536-4076
In stock
NSN: 5331-01-536-4076
FSC Code: 5331
MPN: D4060FFITEM1

5331-01-380-3676 (DN60FF-3K4-00)

NIIN: 01-380-3676
In stock
NSN: 5331-01-380-3676
FSC Code: 5331
MPN: DN60FF3K400

5331-01-458-9390 (AS568-904-C90-90)

NIIN: 01-458-9390
In stock
NSN: 5331-01-458-9390
FSC Code: 5331
MPN: AS568904C9090

5331-01-383-0758 (AS568-235/ZZ-R-765CL2BGR80)

NIIN: 01-383-0758
In stock
NSN: 5331-01-383-0758
FSC Code: 5331
MPN: AS568235ZZR765CL2BGR80

5331-01-536-0656 (AS568A-001)

NIIN: 01-536-0656
In stock
NSN: 5331-01-536-0656
FSC Code: 5331
MPN: AS568A001

5331-01-458-9296 (AS568-904-B46-70)

NIIN: 01-458-9296
In stock
NSN: 5331-01-458-9296
FSC Code: 5331
MPN: AS568904B4670

5331-01-564-4160 (AS568A-902-80BN)

NIIN: 01-564-4160
In stock
NSN: 5331-01-564-4160
FSC Code: 5331
MPN: AS568A90280BN

5331-01-423-0800 (DNX62FF-8-16)

NIIN: 01-423-0800
In stock
NSN: 5331-01-423-0800
FSC Code: 5331
MPN: DNX62FF816

5331-01-374-5197 (AS568-272)

NIIN: 01-374-5197
In stock
NSN: 5331-01-374-5197
FSC Code: 5331
MPN: AS568272

5331-01-392-5761 (AS568-242)

NIIN: 01-392-5761
In stock
NSN: 5331-01-392-5761
FSC Code: 5331
MPN: AS568242

5331-01-468-5424 (AS568-904AMS3660)

NIIN: 01-468-5424
In stock
NSN: 5331-01-468-5424
FSC Code: 5331
MPN: AS568904AMS3660

5331-01-363-4927 (AS568-362MIL-P-25732)

NIIN: 01-363-4927
In stock
NSN: 5331-01-363-4927
FSC Code: 5331
MPN: AS568362MILP25732

5331-01-473-1923 (DNXE62FF-3K4-00)

NIIN: 01-473-1923
In stock
NSN: 5331-01-473-1923
FSC Code: 5331
MPN: DNXE62FF3K400

5331-01-566-5194 (AS-5688-013-70-FS)

NIIN: 01-566-5194
In stock
NSN: 5331-01-566-5194
FSC Code: 5331
MPN: AS568801370FS

5331-01-463-3891 (MIL-G-22050GRADE1SIZEAS568-239)

NIIN: 01-463-3891
In stock
NSN: 5331-01-463-3891
FSC Code: 5331
MPN: MILG22050GRADE1SIZEAS568239

5331-01-496-5386 (MS33666-222)

NIIN: 01-496-5386
In stock
NSN: 5331-01-496-5386
FSC Code: 5331
MPN: MS33666222

5331-01-458-4955 (AS568-248-N470)

NIIN: 01-458-4955
In stock
NSN: 5331-01-458-4955
FSC Code: 5331
MPN: AS568248N470

5331-01-470-8059 (MIL-DTL-22050)

NIIN: 01-470-8059
In stock
NSN: 5331-01-470-8059
FSC Code: 5331
MPN: MILDTL22050

5331-01-386-7370 (AS568-258-B46)

NIIN: 01-386-7370
In stock
NSN: 5331-01-386-7370
FSC Code: 5331
MPN: AS568258B46

5331-01-463-3892 (MIL-G-22050GRADE1SIZEAS568-161)

NIIN: 01-463-3892
In stock
NSN: 5331-01-463-3892
FSC Code: 5331
MPN: MILG22050GRADE1SIZEAS568161