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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.

5331-00-857-5023 (S8990-16)

NIIN: 00-857-5023
In stock
NSN: 5331-00-857-5023
FSC Code: 5331
MPN: S899016

5331-00-845-6820 (S8990-223)

NIIN: 00-845-6820
In stock
NSN: 5331-00-845-6820
FSC Code: 5331
MPN: S8990223

5331-00-051-7166 (S8990-214)

NIIN: 00-051-7166
In stock
NSN: 5331-00-051-7166
FSC Code: 5331
MPN: S8990214

5331-00-877-6429 (S8990-210)

NIIN: 00-877-6429
In stock
NSN: 5331-00-877-6429
FSC Code: 5331
MPN: S8990210

5331-00-061-8006 (S8990-20)

NIIN: 00-061-8006
In stock
NSN: 5331-00-061-8006
FSC Code: 5331
MPN: S899020

5331-00-051-4027 (S8990-19)

NIIN: 00-051-4027
In stock
NSN: 5331-00-051-4027
FSC Code: 5331
MPN: S899019

5331-00-245-6770 (S8990-167)

NIIN: 00-245-6770
In stock
NSN: 5331-00-245-6770
FSC Code: 5331
MPN: S8990167

5331-01-293-5341 (S8990-141)

NIIN: 01-293-5341
In stock
NSN: 5331-01-293-5341
FSC Code: 5331
MPN: S8990141

5331-00-904-1622 (S8990-160)

NIIN: 00-904-1622
In stock
NSN: 5331-00-904-1622
FSC Code: 5331
MPN: S8990160

5331-00-411-4393 (S8990-142)

NIIN: 00-411-4393
In stock
NSN: 5331-00-411-4393
FSC Code: 5331
MPN: S8990142

5331-00-888-8051 (S8990-151)

NIIN: 00-888-8051
In stock
NSN: 5331-00-888-8051
FSC Code: 5331
MPN: S8990151

5331-00-845-9565 (S8990-143)

NIIN: 00-845-9565
In stock
NSN: 5331-00-845-9565
FSC Code: 5331
MPN: S8990143

5331-01-151-8360 (S8990-132)

NIIN: 01-151-8360
In stock
NSN: 5331-01-151-8360
FSC Code: 5331
MPN: S8990132

5331-00-052-2431 (S8990-133)

NIIN: 00-052-2431
In stock
NSN: 5331-00-052-2431
FSC Code: 5331
MPN: S8990133

5331-00-463-1458 (S8990-137)

NIIN: 00-463-1458
In stock
NSN: 5331-00-463-1458
FSC Code: 5331
MPN: S8990137

5331-00-245-7194 (S8990-130)

NIIN: 00-245-7194
In stock
NSN: 5331-00-245-7194
FSC Code: 5331
MPN: S8990130

5331-01-022-1990 (S8990-125)

NIIN: 01-022-1990
In stock
NSN: 5331-01-022-1990
FSC Code: 5331
MPN: S8990125

5331-01-395-1460 (CG-1.5-125F-01-B1-0)

NIIN: 01-395-1460
In stock
NSN: 5331-01-395-1460
FSC Code: 5331
MPN: CG15125F01B10

5331-00-849-0858 (S8990-110)

NIIN: 00-849-0858
In stock
NSN: 5331-00-849-0858
FSC Code: 5331
MPN: S8990110

5331-01-194-8976 (S8990-124)

NIIN: 01-194-8976
In stock
NSN: 5331-01-194-8976
FSC Code: 5331
MPN: S8990124

5331-00-855-0531 (S8990-113)

NIIN: 00-855-0531
In stock
NSN: 5331-00-855-0531
FSC Code: 5331
MPN: S8990113

5331-00-143-7037 (S8990-119)

NIIN: 00-143-7037
In stock
NSN: 5331-00-143-7037
FSC Code: 5331
MPN: S8990119

5331-00-451-1957 (S8990-031)

NIIN: 00-451-1957
In stock
NSN: 5331-00-451-1957
FSC Code: 5331
MPN: S8990031

5331-01-111-2805 (S8990-037)

NIIN: 01-111-2805
In stock
NSN: 5331-01-111-2805
FSC Code: 5331
MPN: S8990037

5331-00-199-3800 (S8990-032)

NIIN: 00-199-3800
In stock
NSN: 5331-00-199-3800
FSC Code: 5331
MPN: S8990032

5331-00-947-4147 (S8990-034)

NIIN: 00-947-4147
In stock
NSN: 5331-00-947-4147
FSC Code: 5331
MPN: S8990034

5331-01-181-9336 (S8990-033)

NIIN: 01-181-9336
In stock
NSN: 5331-01-181-9336
FSC Code: 5331
MPN: S8990033

5331-01-030-6673 (S8990-020)

NIIN: 01-030-6673
In stock
NSN: 5331-01-030-6673
FSC Code: 5331
MPN: S8990020

5331-00-111-5532 (S8990-025)

NIIN: 00-111-5532
In stock
NSN: 5331-00-111-5532
FSC Code: 5331
MPN: S8990025

5331-00-760-3336 (S8990-031)

NIIN: 00-760-3336
In stock
NSN: 5331-00-760-3336
FSC Code: 5331
MPN: S8990031

5331-00-842-8170 (S8990-018)

NIIN: 00-842-8170
In stock
NSN: 5331-00-842-8170
FSC Code: 5331
MPN: S8990018

5331-01-535-6111 (CFF-19T-H2-551A-4)

NIIN: 01-535-6111
In stock
NSN: 5331-01-535-6111
FSC Code: 5331
MPN: CFF19TH2551A4

5331-01-057-3135 (S8990-019)

NIIN: 01-057-3135
In stock
NSN: 5331-01-057-3135
FSC Code: 5331
MPN: S8990019

5331-01-029-0761 (S8990-015)

NIIN: 01-029-0761
In stock
NSN: 5331-01-029-0761
FSC Code: 5331
MPN: S8990015

5331-01-057-3137 (S8990-005)

NIIN: 01-057-3137
In stock
NSN: 5331-01-057-3137
FSC Code: 5331
MPN: S8990005

5331-01-189-3628 (S89769)

NIIN: 01-189-3628
In stock
NSN: 5331-01-189-3628
FSC Code: 5331
MPN: S89769

5331-01-190-1879 (S89697)

NIIN: 01-190-1879
In stock
NSN: 5331-01-190-1879
FSC Code: 5331
MPN: S89697

5331-01-189-3627 (S89530)

NIIN: 01-189-3627
In stock
NSN: 5331-01-189-3627
FSC Code: 5331
MPN: S89530

5331-00-845-9589 (S8890-022)

NIIN: 00-845-9589
In stock
NSN: 5331-00-845-9589
FSC Code: 5331
MPN: S8890022

5331-00-585-0392 (S840)

NIIN: 00-585-0392
In stock
NSN: 5331-00-585-0392
FSC Code: 5331
MPN: S840

5331-00-068-8151 (S8316S8)

NIIN: 00-068-8151
In stock
NSN: 5331-00-068-8151
FSC Code: 5331
MPN: S8316S8

5331-00-068-8149 (S8316S12)

NIIN: 00-068-8149
In stock
NSN: 5331-00-068-8149
FSC Code: 5331
MPN: S8316S12

5331-00-866-0897 (S8316R8)

NIIN: 00-866-0897
In stock
NSN: 5331-00-866-0897
FSC Code: 5331
MPN: S8316R8

5331-00-866-0898 (S8316R4)

NIIN: 00-866-0898
In stock
NSN: 5331-00-866-0898
FSC Code: 5331
MPN: S8316R4

5331-00-579-6822 (S8316U4)

NIIN: 00-579-6822
In stock
NSN: 5331-00-579-6822
FSC Code: 5331
MPN: S8316U4

5331-00-866-0899 (S8316R6)

NIIN: 00-866-0899
In stock
NSN: 5331-00-866-0899
FSC Code: 5331
MPN: S8316R6

5331-00-866-1695 (S8316R5)

NIIN: 00-866-1695
In stock
NSN: 5331-00-866-1695
FSC Code: 5331
MPN: S8316R5

5331-00-866-1696 (S8316R3)

NIIN: 00-866-1696
In stock
NSN: 5331-00-866-1696
FSC Code: 5331
MPN: S8316R3