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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.

5331-01-530-7483 (ASC1408367)

NIIN: 01-530-7483
In stock
NSN: 5331-01-530-7483
FSC Code: 5331
MPN: ASC1408367

5331-99-806-9180 (ASC1376949)

NIIN: 99-806-9180
In stock
NSN: 5331-99-806-9180
FSC Code: 5331
MPN: ASC1376949

5331-01-273-9942 (P-254-1-A39)

NIIN: 01-273-9942
In stock
NSN: 5331-01-273-9942
FSC Code: 5331
MPN: P2541A39

5331-01-551-8811 (AS9967-226)

NIIN: 01-551-8811
In stock
NSN: 5331-01-551-8811
FSC Code: 5331
MPN: AS9967226

5331-01-551-8812 (AS9967-151)

NIIN: 01-551-8812
In stock
NSN: 5331-01-551-8812
FSC Code: 5331
MPN: AS9967151

5331-01-478-7689 (AS9967-137)

NIIN: 01-478-7689
In stock
NSN: 5331-01-478-7689
FSC Code: 5331
MPN: AS9967137

5331-01-525-5089 (AS9967-224)

NIIN: 01-525-5089
In stock
NSN: 5331-01-525-5089
FSC Code: 5331
MPN: AS9967224

5331-01-525-5109 (AS9967-026)

NIIN: 01-525-5109
In stock
NSN: 5331-01-525-5109
FSC Code: 5331
MPN: AS9967026

5331-01-525-8177 (AS9967-236)

NIIN: 01-525-8177
In stock
NSN: 5331-01-525-8177
FSC Code: 5331
MPN: AS9967236

5331-01-525-5104 (AS9967-025)

NIIN: 01-525-5104
In stock
NSN: 5331-01-525-5104
FSC Code: 5331
MPN: AS9967025

5331-01-448-9379 (AS9967-153)

NIIN: 01-448-9379
In stock
NSN: 5331-01-448-9379
FSC Code: 5331
MPN: AS9967153

5331-01-524-9474 (AS9967-136)

NIIN: 01-524-9474
In stock
NSN: 5331-01-524-9474
FSC Code: 5331
MPN: AS9967136

5331-01-525-5075 (AS9967-220)

NIIN: 01-525-5075
In stock
NSN: 5331-01-525-5075
FSC Code: 5331
MPN: AS9967220

5331-01-387-5990 (AS9967-260)

NIIN: 01-387-5990
In stock
NSN: 5331-01-387-5990
FSC Code: 5331
MPN: AS9967260

5331-01-527-1074 (AS9967-033)

NIIN: 01-527-1074
In stock
NSN: 5331-01-527-1074
FSC Code: 5331
MPN: AS9967033

5331-01-497-4725 (AS9967-114)

NIIN: 01-497-4725
In stock
NSN: 5331-01-497-4725
FSC Code: 5331
MPN: AS9967114

5331-01-525-5106 (AS9967-030)

NIIN: 01-525-5106
In stock
NSN: 5331-01-525-5106
FSC Code: 5331
MPN: AS9967030

5331-01-422-9308 (AS9967-118)

NIIN: 01-422-9308
In stock
NSN: 5331-01-422-9308
FSC Code: 5331
MPN: AS9967118

5331-01-525-5097 (AS9967-020)

NIIN: 01-525-5097
In stock
NSN: 5331-01-525-5097
FSC Code: 5331
MPN: AS9967020

5331-01-398-4995 (AS9955-023)

NIIN: 01-398-4995
In stock
NSN: 5331-01-398-4995
FSC Code: 5331
MPN: AS9955023

5331-01-419-1355 (SAE-AS9956)

NIIN: 01-419-1355
In stock
NSN: 5331-01-419-1355
FSC Code: 5331
MPN: SAEAS9956

5331-01-525-5094 (AS9967-023)

NIIN: 01-525-5094
In stock
NSN: 5331-01-525-5094
FSC Code: 5331
MPN: AS9967023

5331-01-515-0324 (AS9386-125)

NIIN: 01-515-0324
In stock
NSN: 5331-01-515-0324
FSC Code: 5331
MPN: AS9386125

5331-01-506-7118 (AS9386-041)

NIIN: 01-506-7118
In stock
NSN: 5331-01-506-7118
FSC Code: 5331
MPN: AS9386041

5331-01-354-0239 (AS9386-002)

NIIN: 01-354-0239
In stock
NSN: 5331-01-354-0239
FSC Code: 5331
MPN: AS9386002

5331-01-523-6763 (AS9068-026)

NIIN: 01-523-6763
In stock
NSN: 5331-01-523-6763
FSC Code: 5331
MPN: AS9068026

5331-01-449-7945 (M8791/1-218)

NIIN: 01-449-7945
In stock
NSN: 5331-01-449-7945
FSC Code: 5331
MPN: M87911218

5331-01-414-4716 (MIL-R-8791/1)

NIIN: 01-414-4716
In stock
NSN: 5331-01-414-4716
FSC Code: 5331
MPN: MILR87911

5331-01-523-8613 (AS89021-032)

NIIN: 01-523-8613
In stock
NSN: 5331-01-523-8613
FSC Code: 5331
MPN: AS89021032

5331-01-315-4827 (P21856-SN893100)

NIIN: 01-315-4827
In stock
NSN: 5331-01-315-4827
FSC Code: 5331
MPN: P21856SN893100

5331-01-275-3334 (P223)

NIIN: 01-275-3334
In stock
NSN: 5331-01-275-3334
FSC Code: 5331
MPN: P223

5331-01-397-3436 (MIL-P-83461/1-427)

NIIN: 01-397-3436
In stock
NSN: 5331-01-397-3436
FSC Code: 5331
MPN: MILP834611427

5331-01-260-4695 (P210-1)

NIIN: 01-260-4695
In stock
NSN: 5331-01-260-4695
FSC Code: 5331
MPN: P2101

5331-01-312-9921 (P-203-IT-936)

NIIN: 01-312-9921
In stock
NSN: 5331-01-312-9921
FSC Code: 5331
MPN: P203IT936

5331-01-312-9920 (P-203-IT-925)

NIIN: 01-312-9920
In stock
NSN: 5331-01-312-9920
FSC Code: 5331
MPN: P203IT925

5331-01-560-4092 (AS568B-266-70BNB)

NIIN: 01-560-4092
In stock
NSN: 5331-01-560-4092
FSC Code: 5331
MPN: AS568B26670BNB

5331-01-549-4370 (AS568B-247)

NIIN: 01-549-4370
In stock
NSN: 5331-01-549-4370
FSC Code: 5331
MPN: AS568B247

5331-01-492-5134 (AS568A-112)

NIIN: 01-492-5134
In stock
NSN: 5331-01-492-5134
FSC Code: 5331
MPN: AS568A112

5331-01-525-4522 (AS-568A-031)

NIIN: 01-525-4522
In stock
NSN: 5331-01-525-4522
FSC Code: 5331
MPN: AS568A031

5331-01-456-3808 (AS568A-129/MVQ-70)

NIIN: 01-456-3808
In stock
NSN: 5331-01-456-3808
FSC Code: 5331
MPN: AS568A129MVQ70

5331-01-527-1590 (AS-568A-447-70FS)

NIIN: 01-527-1590
In stock
NSN: 5331-01-527-1590
FSC Code: 5331
MPN: AS568A44770FS

5331-01-572-8825 (AS568A-225)

NIIN: 01-572-8825
In stock
NSN: 5331-01-572-8825
FSC Code: 5331
MPN: AS568A225

5331-01-537-1472 (AS568A-165)

NIIN: 01-537-1472
In stock
NSN: 5331-01-537-1472
FSC Code: 5331
MPN: AS568A165

5331-01-560-4091 (AS568B-273-70BNB)

NIIN: 01-560-4091
In stock
NSN: 5331-01-560-4091
FSC Code: 5331
MPN: AS568B27370BNB

5331-01-456-3811 (AS568A-045/CR-70)

NIIN: 01-456-3811
In stock
NSN: 5331-01-456-3811
FSC Code: 5331
MPN: AS568A045CR70

5331-01-525-5878 (AS568B-388-70EP)

NIIN: 01-525-5878
In stock
NSN: 5331-01-525-5878
FSC Code: 5331
MPN: AS568B38870EP

5331-01-516-4291 (AS568A-036-70FS)

NIIN: 01-516-4291
In stock
NSN: 5331-01-516-4291
FSC Code: 5331
MPN: AS568A03670FS

5331-01-561-0867 (AS568A-040)

NIIN: 01-561-0867
In stock
NSN: 5331-01-561-0867
FSC Code: 5331
MPN: AS568A040