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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.

5331-01-497-9144 (810901-106)

NIIN: 01-497-9144
In stock
NSN: 5331-01-497-9144
FSC Code: 5331
MPN: 810901106

5331-01-552-9134 (810901-245)

NIIN: 01-552-9134
In stock
NSN: 5331-01-552-9134
FSC Code: 5331
MPN: 810901245

5331-01-497-9150 (810901-903)

NIIN: 01-497-9150
In stock
NSN: 5331-01-497-9150
FSC Code: 5331
MPN: 810901903

5331-01-276-7352 (K288041)

NIIN: 01-276-7352
In stock
NSN: 5331-01-276-7352
FSC Code: 5331
MPN: K288041

5331-01-497-9117 (810901-011)

NIIN: 01-497-9117
In stock
NSN: 5331-01-497-9117
FSC Code: 5331
MPN: 810901011

5331-01-497-9125 (810901-014)

NIIN: 01-497-9125
In stock
NSN: 5331-01-497-9125
FSC Code: 5331
MPN: 810901014

5331-01-497-9134 (810901-018)

NIIN: 01-497-9134
In stock
NSN: 5331-01-497-9134
FSC Code: 5331
MPN: 810901018

5331-01-497-9151 (810901-904)

NIIN: 01-497-9151
In stock
NSN: 5331-01-497-9151
FSC Code: 5331
MPN: 810901904

5331-01-497-9147 (810901-128)

NIIN: 01-497-9147
In stock
NSN: 5331-01-497-9147
FSC Code: 5331
MPN: 810901128

5331-01-497-9116 (810901-010)

NIIN: 01-497-9116
In stock
NSN: 5331-01-497-9116
FSC Code: 5331
MPN: 810901010

5331-01-497-9108 (810901-008)

NIIN: 01-497-9108
In stock
NSN: 5331-01-497-9108
FSC Code: 5331
MPN: 810901008

5331-01-497-9127 (810901-015)

NIIN: 01-497-9127
In stock
NSN: 5331-01-497-9127
FSC Code: 5331
MPN: 810901015

5331-01-497-9120 (810901-012)

NIIN: 01-497-9120
In stock
NSN: 5331-01-497-9120
FSC Code: 5331
MPN: 810901012

5331-01-497-9130 (810901-016)

NIIN: 01-497-9130
In stock
NSN: 5331-01-497-9130
FSC Code: 5331
MPN: 810901016

5331-01-497-9139 (810901-021)

NIIN: 01-497-9139
In stock
NSN: 5331-01-497-9139
FSC Code: 5331
MPN: 810901021

5331-01-497-9110 (810901-009)

NIIN: 01-497-9110
In stock
NSN: 5331-01-497-9110
FSC Code: 5331
MPN: 810901009

5331-01-497-9123 (810901-013)

NIIN: 01-497-9123
In stock
NSN: 5331-01-497-9123
FSC Code: 5331
MPN: 810901013

5331-01-533-5169 (8-108N300-90)

NIIN: 01-533-5169
In stock
NSN: 5331-01-533-5169
FSC Code: 5331
MPN: 8108N30090

5331-01-497-9101 (810901-007)

NIIN: 01-497-9101
In stock
NSN: 5331-01-497-9101
FSC Code: 5331
MPN: 810901007

5331-01-232-2150 (K255580)

NIIN: 01-232-2150
In stock
NSN: 5331-01-232-2150
FSC Code: 5331
MPN: K255580

5331-01-559-5873 (810-602-1682)

NIIN: 01-559-5873
In stock
NSN: 5331-01-559-5873
FSC Code: 5331
MPN: 8106021682

5331-01-289-4930 (K232022)

NIIN: 01-289-4930
In stock
NSN: 5331-01-289-4930
FSC Code: 5331
MPN: K232022

5331-01-289-4931 (K232023)

NIIN: 01-289-4931
In stock
NSN: 5331-01-289-4931
FSC Code: 5331
MPN: K232023

5331-01-290-3360 (K232018)

NIIN: 01-290-3360
In stock
NSN: 5331-01-290-3360
FSC Code: 5331
MPN: K232018

5331-01-289-4933 (K232019)

NIIN: 01-289-4933
In stock
NSN: 5331-01-289-4933
FSC Code: 5331
MPN: K232019

5331-01-289-4932 (K232017)

NIIN: 01-289-4932
In stock
NSN: 5331-01-289-4932
FSC Code: 5331
MPN: K232017

5331-01-128-4022 (K-21137)

NIIN: 01-128-4022
In stock
NSN: 5331-01-128-4022
FSC Code: 5331
MPN: K21137

5331-00-197-9212 (K208A4)

NIIN: 00-197-9212
In stock
NSN: 5331-00-197-9212
FSC Code: 5331
MPN: K208A4

5331-00-197-9204 (K207A125)

NIIN: 00-197-9204
In stock
NSN: 5331-00-197-9204
FSC Code: 5331
MPN: K207A125

5331-00-197-9117 (K207A10)

NIIN: 00-197-9117
In stock
NSN: 5331-00-197-9117
FSC Code: 5331
MPN: K207A10

5331-00-403-3523 (K207A7)

NIIN: 00-403-3523
In stock
NSN: 5331-00-403-3523
FSC Code: 5331
MPN: K207A7

5331-00-197-9156 (K207A14)

NIIN: 00-197-9156
In stock
NSN: 5331-00-197-9156
FSC Code: 5331
MPN: K207A14

5331-00-403-3524 (K207A12)

NIIN: 00-403-3524
In stock
NSN: 5331-00-403-3524
FSC Code: 5331
MPN: K207A12

5331-01-246-2541 (K183-089)

NIIN: 01-246-2541
In stock
NSN: 5331-01-246-2541
FSC Code: 5331
MPN: K183089

5331-01-237-2965 (K-17256)

NIIN: 01-237-2965
In stock
NSN: 5331-01-237-2965
FSC Code: 5331
MPN: K17256

5331-01-549-2463 (301044-1FN-5)

NIIN: 01-549-2463
In stock
NSN: 5331-01-549-2463
FSC Code: 5331
MPN: 3010441FN5

5331-01-308-1205 (K15264)

NIIN: 01-308-1205
In stock
NSN: 5331-01-308-1205
FSC Code: 5331
MPN: K15264

5331-01-278-7625 (K15041)

NIIN: 01-278-7625
In stock
NSN: 5331-01-278-7625
FSC Code: 5331
MPN: K15041

5331-01-176-7938 (K-1335-B)

NIIN: 01-176-7938
In stock
NSN: 5331-01-176-7938
FSC Code: 5331
MPN: K1335B

5331-01-420-7020 (8100-1252-0236)

NIIN: 01-420-7020
In stock
NSN: 5331-01-420-7020
FSC Code: 5331
MPN: 810012520236

5331-01-123-7033 (K125-411)

NIIN: 01-123-7033
In stock
NSN: 5331-01-123-7033
FSC Code: 5331
MPN: K125411

5331-01-124-2962 (K123-164-2)

NIIN: 01-124-2962
In stock
NSN: 5331-01-124-2962
FSC Code: 5331
MPN: K1231642

5331-01-029-8824 (K123-246-1)

NIIN: 01-029-8824
In stock
NSN: 5331-01-029-8824
FSC Code: 5331
MPN: K1232461

5331-01-123-5582 (K123-011-3)

NIIN: 01-123-5582
In stock
NSN: 5331-01-123-5582
FSC Code: 5331
MPN: K1230113

5331-00-585-9772 (K123-040-1)

NIIN: 00-585-9772
In stock
NSN: 5331-00-585-9772
FSC Code: 5331
MPN: K1230401

5331-22-269-2746 (81000-24-1882)

NIIN: 22-269-2746
In stock
NSN: 5331-22-269-2746
FSC Code: 5331
MPN: 81000241882

5331-01-513-1837 (81.11.157.40)

NIIN: 01-513-1837
In stock
NSN: 5331-01-513-1837
FSC Code: 5331
MPN: 811115740

5331-01-419-6978 (81.11.157.22)

NIIN: 01-419-6978
In stock
NSN: 5331-01-419-6978
FSC Code: 5331
MPN: 811115722