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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.

5331-01-435-7319 (B398139-72)

NIIN: 01-435-7319
In stock
NSN: 5331-01-435-7319
FSC Code: 5331
MPN: B39813972

5331-01-317-0044 (79551-3)

NIIN: 01-317-0044
In stock
NSN: 5331-01-317-0044
FSC Code: 5331
MPN: 795513

5331-01-316-5755 (79551-3)

NIIN: 01-316-5755
In stock
NSN: 5331-01-316-5755
FSC Code: 5331
MPN: 795513

5331-00-401-6164 (79550-8-1)

NIIN: 00-401-6164
In stock
NSN: 5331-00-401-6164
FSC Code: 5331
MPN: 7955081

5331-01-009-7043 (79550-9)

NIIN: 01-009-7043
In stock
NSN: 5331-01-009-7043
FSC Code: 5331
MPN: 795509

5331-01-101-8068 (79551-3-1)

NIIN: 01-101-8068
In stock
NSN: 5331-01-101-8068
FSC Code: 5331
MPN: 7955131

5331-00-008-2192 (79551-12)

NIIN: 00-008-2192
In stock
NSN: 5331-00-008-2192
FSC Code: 5331
MPN: 7955112

5331-01-319-4188 (79550-44)

NIIN: 01-319-4188
In stock
NSN: 5331-01-319-4188
FSC Code: 5331
MPN: 7955044

5331-00-702-7102 (79550-12-1)

NIIN: 00-702-7102
In stock
NSN: 5331-00-702-7102
FSC Code: 5331
MPN: 79550121

5331-01-316-5144 (79550-67)

NIIN: 01-316-5144
In stock
NSN: 5331-01-316-5144
FSC Code: 5331
MPN: 7955067

5331-00-134-8666 (79550-7)

NIIN: 00-134-8666
In stock
NSN: 5331-00-134-8666
FSC Code: 5331
MPN: 795507

5331-00-008-2191 (79550-36)

NIIN: 00-008-2191
In stock
NSN: 5331-00-008-2191
FSC Code: 5331
MPN: 7955036

5331-00-505-2441 (79550-5-1)

NIIN: 00-505-2441
In stock
NSN: 5331-00-505-2441
FSC Code: 5331
MPN: 7955051

5331-01-176-7950 (79550-17-1)

NIIN: 01-176-7950
In stock
NSN: 5331-01-176-7950
FSC Code: 5331
MPN: 79550171

5331-01-303-8562 (79550-13-1)

NIIN: 01-303-8562
In stock
NSN: 5331-01-303-8562
FSC Code: 5331
MPN: 79550131

5331-01-307-7081 (79550-14)

NIIN: 01-307-7081
In stock
NSN: 5331-01-307-7081
FSC Code: 5331
MPN: 7955014

5331-00-613-1408 (795081-1)

NIIN: 00-613-1408
In stock
NSN: 5331-00-613-1408
FSC Code: 5331
MPN: 7950811

5331-01-217-5211 (79512-000)

NIIN: 01-217-5211
In stock
NSN: 5331-01-217-5211
FSC Code: 5331
MPN: 79512000

5331-01-294-4237 (79-502522-47-00)

NIIN: 01-294-4237
In stock
NSN: 5331-01-294-4237
FSC Code: 5331
MPN: 795025224700

5331-01-294-4236 (79-502522-38-00)

NIIN: 01-294-4236
In stock
NSN: 5331-01-294-4236
FSC Code: 5331
MPN: 795025223800

5331-01-215-9644 (795-0000)

NIIN: 01-215-9644
In stock
NSN: 5331-01-215-9644
FSC Code: 5331
MPN: 7950000

5331-01-261-1592 (7945-000)

NIIN: 01-261-1592
In stock
NSN: 5331-01-261-1592
FSC Code: 5331
MPN: 7945000

5331-01-343-2659 (HV39-619-30-HT)

NIIN: 01-343-2659
In stock
NSN: 5331-01-343-2659
FSC Code: 5331
MPN: HV3961930HT

5331-01-469-9345 (395L001)

NIIN: 01-469-9345
In stock
NSN: 5331-01-469-9345
FSC Code: 5331
MPN: 395L001

5331-01-214-7697 (792-454)

NIIN: 01-214-7697
In stock
NSN: 5331-01-214-7697
FSC Code: 5331
MPN: 792454

5331-01-214-7696 (792-343)

NIIN: 01-214-7696
In stock
NSN: 5331-01-214-7696
FSC Code: 5331
MPN: 792343

5331-01-214-7698 (792-334)

NIIN: 01-214-7698
In stock
NSN: 5331-01-214-7698
FSC Code: 5331
MPN: 792334

5331-01-214-7694 (792-346)

NIIN: 01-214-7694
In stock
NSN: 5331-01-214-7694
FSC Code: 5331
MPN: 792346

5331-01-214-7695 (792-347)

NIIN: 01-214-7695
In stock
NSN: 5331-01-214-7695
FSC Code: 5331
MPN: 792347

5331-01-451-3189 (801-6406375FINDACC)

NIIN: 01-451-3189
In stock
NSN: 5331-01-451-3189
FSC Code: 5331
MPN: 8016406375FINDACC

5331-01-464-3842 (3-932-V894-90)

NIIN: 01-464-3842
In stock
NSN: 5331-01-464-3842
FSC Code: 5331
MPN: 3932V89490

5331-01-520-7191 (MIL-STD-129)

NIIN: 01-520-7191
In stock
NSN: 5331-01-520-7191
FSC Code: 5331
MPN: MILSTD129

5331-01-406-6337 (MIL-DTL-25988/3)

NIIN: 01-406-6337
In stock
NSN: 5331-01-406-6337
FSC Code: 5331
MPN: MILDTL259883

5331-01-556-0451 (6278E74-P16)

NIIN: 01-556-0451
In stock
NSN: 5331-01-556-0451
FSC Code: 5331
MPN: 6278E74P16

5331-01-507-8577 (3-924L1223-60)

NIIN: 01-507-8577
In stock
NSN: 5331-01-507-8577
FSC Code: 5331
MPN: 3924L122360

5331-01-464-3856 (3-924-V894-90)

NIIN: 01-464-3856
In stock
NSN: 5331-01-464-3856
FSC Code: 5331
MPN: 3924V89490

5331-01-397-0985 (3-924N507-90)

NIIN: 01-397-0985
In stock
NSN: 5331-01-397-0985
FSC Code: 5331
MPN: 3924N50790

5331-01-556-0453 (6278E74-P17)

NIIN: 01-556-0453
In stock
NSN: 5331-01-556-0453
FSC Code: 5331
MPN: 6278E74P17

5331-01-382-0943 (39226-634-10)

NIIN: 01-382-0943
In stock
NSN: 5331-01-382-0943
FSC Code: 5331
MPN: 3922663410

5331-01-388-0432 (3-920N552-90)

NIIN: 01-388-0432
In stock
NSN: 5331-01-388-0432
FSC Code: 5331
MPN: 3920N55290

5331-01-464-9572 (3-920-V709-90)

NIIN: 01-464-9572
In stock
NSN: 5331-01-464-9572
FSC Code: 5331
MPN: 3920V70990

5331-01-470-6320 (3-920E540-80)

NIIN: 01-470-6320
In stock
NSN: 5331-01-470-6320
FSC Code: 5331
MPN: 3920E54080

5331-01-497-2673 (3-920V709-90)

NIIN: 01-497-2673
In stock
NSN: 5331-01-497-2673
FSC Code: 5331
MPN: 3920V70990

5331-01-561-7395 (3-920)

NIIN: 01-561-7395
In stock
NSN: 5331-01-561-7395
FSC Code: 5331
MPN: 3920

5331-01-512-0636 (CP031A920D3)

NIIN: 01-512-0636
In stock
NSN: 5331-01-512-0636
FSC Code: 5331
MPN: CP031A920D3

5331-01-541-1315 (3-920)

NIIN: 01-541-1315
In stock
NSN: 5331-01-541-1315
FSC Code: 5331
MPN: 3920

5331-01-442-6608 (MIL-P-83461/2)

NIIN: 01-442-6608
In stock
NSN: 5331-01-442-6608
FSC Code: 5331
MPN: MILP834612

5331-01-462-3463 (3-916N168-80)

NIIN: 01-462-3463
In stock
NSN: 5331-01-462-3463
FSC Code: 5331
MPN: 3916N16880