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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.

5331-01-144-6175 (A6689.030.142)

NIIN: 01-144-6175
In stock
NSN: 5331-01-144-6175
FSC Code: 5331
MPN: A6689030142

5331-01-215-6749 (A6689.027.303)

NIIN: 01-215-6749
In stock
NSN: 5331-01-215-6749
FSC Code: 5331
MPN: A6689027303

5331-01-241-2726 (A6689.029.142)

NIIN: 01-241-2726
In stock
NSN: 5331-01-241-2726
FSC Code: 5331
MPN: A6689029142

5331-01-271-2531 (A6689.020.303)

NIIN: 01-271-2531
In stock
NSN: 5331-01-271-2531
FSC Code: 5331
MPN: A6689020303

5331-01-221-4206 (A6689.020.144)

NIIN: 01-221-4206
In stock
NSN: 5331-01-221-4206
FSC Code: 5331
MPN: A6689020144

5331-01-396-8387 (I11376-8SF56A)

NIIN: 01-396-8387
In stock
NSN: 5331-01-396-8387
FSC Code: 5331
MPN: I113768SF56A

5331-01-308-7363 (A-66-1-L)

NIIN: 01-308-7363
In stock
NSN: 5331-01-308-7363
FSC Code: 5331
MPN: A661L

5331-00-986-0230 (A662)

NIIN: 00-986-0230
In stock
NSN: 5331-00-986-0230
FSC Code: 5331
MPN: A662

5331-01-181-2436 (A-6601-M)

NIIN: 01-181-2436
In stock
NSN: 5331-01-181-2436
FSC Code: 5331
MPN: A6601M

5331-01-181-7392 (A-6601-L)

NIIN: 01-181-7392
In stock
NSN: 5331-01-181-7392
FSC Code: 5331
MPN: A6601L

5331-01-181-7391 (A-6601-K)

NIIN: 01-181-7391
In stock
NSN: 5331-01-181-7391
FSC Code: 5331
MPN: A6601K

5331-01-470-9047 (5719-0905)

NIIN: 01-470-9047
In stock
NSN: 5331-01-470-9047
FSC Code: 5331
MPN: 57190905

5331-01-077-4848 (A6515)

NIIN: 01-077-4848
In stock
NSN: 5331-01-077-4848
FSC Code: 5331
MPN: A6515

5331-01-473-1967 (5719-0216)

NIIN: 01-473-1967
In stock
NSN: 5331-01-473-1967
FSC Code: 5331
MPN: 57190216

5331-01-470-9044 (5719-0114)

NIIN: 01-470-9044
In stock
NSN: 5331-01-470-9044
FSC Code: 5331
MPN: 57190114

5331-01-470-9042 (5719-0155)

NIIN: 01-470-9042
In stock
NSN: 5331-01-470-9042
FSC Code: 5331
MPN: 57190155

5331-01-470-9043 (5719-0153)

NIIN: 01-470-9043
In stock
NSN: 5331-01-470-9043
FSC Code: 5331
MPN: 57190153

5331-01-257-4784 (A64436)

NIIN: 01-257-4784
In stock
NSN: 5331-01-257-4784
FSC Code: 5331
MPN: A64436

5331-00-878-0520 (A63097)

NIIN: 00-878-0520
In stock
NSN: 5331-00-878-0520
FSC Code: 5331
MPN: A63097

5331-01-378-7181 (5-710L998-70)

NIIN: 01-378-7181
In stock
NSN: 5331-01-378-7181
FSC Code: 5331
MPN: 5710L99870

5331-01-040-7851 (A-62844)

NIIN: 01-040-7851
In stock
NSN: 5331-01-040-7851
FSC Code: 5331
MPN: A62844

5331-01-254-8295 (A-6302-A)

NIIN: 01-254-8295
In stock
NSN: 5331-01-254-8295
FSC Code: 5331
MPN: A6302A

5331-01-316-7573 (A-62056)

NIIN: 01-316-7573
In stock
NSN: 5331-01-316-7573
FSC Code: 5331
MPN: A62056

5331-01-523-6445 (81487-001)

NIIN: 01-523-6445
In stock
NSN: 5331-01-523-6445
FSC Code: 5331
MPN: 81487001

5331-01-329-6910 (A618016)

NIIN: 01-329-6910
In stock
NSN: 5331-01-329-6910
FSC Code: 5331
MPN: A618016

5331-00-872-4530 (A60W1175K06)

NIIN: 00-872-4530
In stock
NSN: 5331-00-872-4530
FSC Code: 5331
MPN: A60W1175K06

5331-01-168-5519 (A60W1174B012-70)

NIIN: 01-168-5519
In stock
NSN: 5331-01-168-5519
FSC Code: 5331
MPN: A60W1174B01270

5331-01-315-8725 (A-60997)

NIIN: 01-315-8725
In stock
NSN: 5331-01-315-8725
FSC Code: 5331
MPN: A60997

5331-01-315-8726 (A-60996)

NIIN: 01-315-8726
In stock
NSN: 5331-01-315-8726
FSC Code: 5331
MPN: A60996

5331-01-315-8727 (A-60938)

NIIN: 01-315-8727
In stock
NSN: 5331-01-315-8727
FSC Code: 5331
MPN: A60938

5331-00-349-9666 (A-60723)

NIIN: 00-349-9666
In stock
NSN: 5331-00-349-9666
FSC Code: 5331
MPN: A60723

5331-00-708-1493 (A60600)

NIIN: 00-708-1493
In stock
NSN: 5331-00-708-1493
FSC Code: 5331
MPN: A60600

5331-00-708-1211 (A-60495)

NIIN: 00-708-1211
In stock
NSN: 5331-00-708-1211
FSC Code: 5331
MPN: A60495

5331-00-349-9667 (A-60496)

NIIN: 00-349-9667
In stock
NSN: 5331-00-349-9667
FSC Code: 5331
MPN: A60496

5331-00-459-0892 (A604-33)

NIIN: 00-459-0892
In stock
NSN: 5331-00-459-0892
FSC Code: 5331
MPN: A60433

5331-01-469-2403 (5-701-N674-70)

NIIN: 01-469-2403
In stock
NSN: 5331-01-469-2403
FSC Code: 5331
MPN: 5701N67470

5331-01-091-3331 (A-6008-509)

NIIN: 01-091-3331
In stock
NSN: 5331-01-091-3331
FSC Code: 5331
MPN: A6008509

5331-01-306-9846 (A5921)

NIIN: 01-306-9846
In stock
NSN: 5331-01-306-9846
FSC Code: 5331
MPN: A5921

5331-01-314-0817 (A58708)

NIIN: 01-314-0817
In stock
NSN: 5331-01-314-0817
FSC Code: 5331
MPN: A58708

5331-01-086-9808 (A58706)

NIIN: 01-086-9808
In stock
NSN: 5331-01-086-9808
FSC Code: 5331
MPN: A58706

5331-01-563-4922 (56AM)

NIIN: 01-563-4922
In stock
NSN: 5331-01-563-4922
FSC Code: 5331
MPN: 56AM

5331-01-418-1093 (58896CITEM74)

NIIN: 01-418-1093
In stock
NSN: 5331-01-418-1093
FSC Code: 5331
MPN: 58896CITEM74

5331-01-227-5675 (A57265-501)

NIIN: 01-227-5675
In stock
NSN: 5331-01-227-5675
FSC Code: 5331
MPN: A57265501

5331-01-226-8744 (A57265-500)

NIIN: 01-226-8744
In stock
NSN: 5331-01-226-8744
FSC Code: 5331
MPN: A57265500

5331-01-564-7542 (568-904)

NIIN: 01-564-7542
In stock
NSN: 5331-01-564-7542
FSC Code: 5331
MPN: 568904

5331-01-227-5676 (A57265-502)

NIIN: 01-227-5676
In stock
NSN: 5331-01-227-5676
FSC Code: 5331
MPN: A57265502

5331-01-190-1883 (A57116)

NIIN: 01-190-1883
In stock
NSN: 5331-01-190-1883
FSC Code: 5331
MPN: A57116

5331-01-063-1769 (A568-906)

NIIN: 01-063-1769
In stock
NSN: 5331-01-063-1769
FSC Code: 5331
MPN: A568906