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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.

5331-01-005-2314 (AS3209-457)

NIIN: 01-005-2314
In stock
NSN: 5331-01-005-2314
FSC Code: 5331
MPN: AS3209457

5331-01-522-0141 (6V-7350)

NIIN: 01-522-0141
In stock
NSN: 5331-01-522-0141
FSC Code: 5331
MPN: 6V7350

5331-01-005-4054 (AS3209-452)

NIIN: 01-005-4054
In stock
NSN: 5331-01-005-4054
FSC Code: 5331
MPN: AS3209452

5331-01-005-4408 (AS3209-444)

NIIN: 01-005-4408
In stock
NSN: 5331-01-005-4408
FSC Code: 5331
MPN: AS3209444

5331-01-007-4893 (AS3209-441)

NIIN: 01-007-4893
In stock
NSN: 5331-01-007-4893
FSC Code: 5331
MPN: AS3209441

5331-01-005-0536 (AS3209-389)

NIIN: 01-005-0536
In stock
NSN: 5331-01-005-0536
FSC Code: 5331
MPN: AS3209389

5331-01-006-2104 (AS3209-432)

NIIN: 01-006-2104
In stock
NSN: 5331-01-006-2104
FSC Code: 5331
MPN: AS3209432

5331-01-005-4048 (AS3209-434)

NIIN: 01-005-4048
In stock
NSN: 5331-01-005-4048
FSC Code: 5331
MPN: AS3209434

5331-01-005-0537 (AS3209-390)

NIIN: 01-005-0537
In stock
NSN: 5331-01-005-0537
FSC Code: 5331
MPN: AS3209390

5331-01-005-0539 (AS3209-393)

NIIN: 01-005-0539
In stock
NSN: 5331-01-005-0539
FSC Code: 5331
MPN: AS3209393

5331-01-005-3211 (AS3209-394)

NIIN: 01-005-3211
In stock
NSN: 5331-01-005-3211
FSC Code: 5331
MPN: AS3209394

5331-01-007-4890 (AS3209-391)

NIIN: 01-007-4890
In stock
NSN: 5331-01-007-4890
FSC Code: 5331
MPN: AS3209391

5331-01-138-9595 (AS3209-337)

NIIN: 01-138-9595
In stock
NSN: 5331-01-138-9595
FSC Code: 5331
MPN: AS3209337

5331-00-763-0239 (AS3209-335)

NIIN: 00-763-0239
In stock
NSN: 5331-00-763-0239
FSC Code: 5331
MPN: AS3209335

5331-00-103-1836 (AS3209-280)

NIIN: 00-103-1836
In stock
NSN: 5331-00-103-1836
FSC Code: 5331
MPN: AS3209280

5331-00-103-1552 (AS3209-277)

NIIN: 00-103-1552
In stock
NSN: 5331-00-103-1552
FSC Code: 5331
MPN: AS3209277

5331-00-103-1523 (AS3209-270)

NIIN: 00-103-1523
In stock
NSN: 5331-00-103-1523
FSC Code: 5331
MPN: AS3209270

5331-00-559-3996 (AS3209-228CP)

NIIN: 00-559-3996
In stock
NSN: 5331-00-559-3996
FSC Code: 5331
MPN: AS3209228CP

5331-01-231-7478 (AS3209-233)

NIIN: 01-231-7478
In stock
NSN: 5331-01-231-7478
FSC Code: 5331
MPN: AS3209233

5331-01-008-1153 (AS3209-235)

NIIN: 01-008-1153
In stock
NSN: 5331-01-008-1153
FSC Code: 5331
MPN: AS3209235

5331-01-315-5555 (AS3209-165)

NIIN: 01-315-5555
In stock
NSN: 5331-01-315-5555
FSC Code: 5331
MPN: AS3209165

5331-01-138-9596 (AS3209-178)

NIIN: 01-138-9596
In stock
NSN: 5331-01-138-9596
FSC Code: 5331
MPN: AS3209178

5331-00-103-1791 (AS3209-159)

NIIN: 00-103-1791
In stock
NSN: 5331-00-103-1791
FSC Code: 5331
MPN: AS3209159

5331-01-416-7329 (5K74)

NIIN: 01-416-7329
In stock
NSN: 5331-01-416-7329
FSC Code: 5331
MPN: 5K74

5331-00-103-1786 (AS3209-156)

NIIN: 00-103-1786
In stock
NSN: 5331-00-103-1786
FSC Code: 5331
MPN: AS3209156

5331-00-103-1511 (AS3209-151)

NIIN: 00-103-1511
In stock
NSN: 5331-00-103-1511
FSC Code: 5331
MPN: AS3209151

5331-00-103-1813 (AS3209-141)

NIIN: 00-103-1813
In stock
NSN: 5331-00-103-1813
FSC Code: 5331
MPN: AS3209141

5331-01-111-8436 (AS3209-125)

NIIN: 01-111-8436
In stock
NSN: 5331-01-111-8436
FSC Code: 5331
MPN: AS3209125

5331-01-324-5268 (AS3209-126CP)

NIIN: 01-324-5268
In stock
NSN: 5331-01-324-5268
FSC Code: 5331
MPN: AS3209126CP

5331-00-103-1675 (AS3209-121)

NIIN: 00-103-1675
In stock
NSN: 5331-00-103-1675
FSC Code: 5331
MPN: AS3209121

5331-01-336-9871 (AS3209-119CP)

NIIN: 01-336-9871
In stock
NSN: 5331-01-336-9871
FSC Code: 5331
MPN: AS3209119CP

5331-01-130-6586 (AS3209-124)

NIIN: 01-130-6586
In stock
NSN: 5331-01-130-6586
FSC Code: 5331
MPN: AS3209124

5331-00-201-9975 (AS3209-117)

NIIN: 00-201-9975
In stock
NSN: 5331-00-201-9975
FSC Code: 5331
MPN: AS3209117

5331-00-926-0074 (AS3209-111)

NIIN: 00-926-0074
In stock
NSN: 5331-00-926-0074
FSC Code: 5331
MPN: AS3209111

5331-00-922-5058 (AS3209-042)

NIIN: 00-922-5058
In stock
NSN: 5331-00-922-5058
FSC Code: 5331
MPN: AS3209042

5331-00-926-0058 (AS3209-030)

NIIN: 00-926-0058
In stock
NSN: 5331-00-926-0058
FSC Code: 5331
MPN: AS3209030

5331-01-065-2651 (AS3209-037)

NIIN: 01-065-2651
In stock
NSN: 5331-01-065-2651
FSC Code: 5331
MPN: AS3209037

5331-01-419-8337 (5K4)

NIIN: 01-419-8337
In stock
NSN: 5331-01-419-8337
FSC Code: 5331
MPN: 5K4

5331-00-922-5896 (AS3209-012)

NIIN: 00-922-5896
In stock
NSN: 5331-00-922-5896
FSC Code: 5331
MPN: AS3209012

5331-00-922-5056 (AS3209-025)

NIIN: 00-922-5056
In stock
NSN: 5331-00-922-5056
FSC Code: 5331
MPN: AS3209025

5331-01-033-2708 (AS3209-007)

NIIN: 01-033-2708
In stock
NSN: 5331-01-033-2708
FSC Code: 5331
MPN: AS3209007

5331-01-024-4857 (AS3209-006)

NIIN: 01-024-4857
In stock
NSN: 5331-01-024-4857
FSC Code: 5331
MPN: AS3209006

5331-00-922-5963 (AS3209-0028)

NIIN: 00-922-5963
In stock
NSN: 5331-00-922-5963
FSC Code: 5331
MPN: AS32090028

5331-01-137-3961 (AS3208-05)

NIIN: 01-137-3961
In stock
NSN: 5331-01-137-3961
FSC Code: 5331
MPN: AS320805

5331-01-033-2709 (AS3208-02)

NIIN: 01-033-2709
In stock
NSN: 5331-01-033-2709
FSC Code: 5331
MPN: AS320802

5331-01-084-4750 (AS3085-255)

NIIN: 01-084-4750
In stock
NSN: 5331-01-084-4750
FSC Code: 5331
MPN: AS3085255

5331-01-049-2221 (AS3085-253)

NIIN: 01-049-2221
In stock
NSN: 5331-01-049-2221
FSC Code: 5331
MPN: AS3085253

5331-01-091-2758 (AS3085-210)

NIIN: 01-091-2758
In stock
NSN: 5331-01-091-2758
FSC Code: 5331
MPN: AS3085210