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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.

5331-01-729-6155 (K3VL80, CODE 728)

NIIN: 01-729-6155
In stock
NSN: 5331-01-729-6155
FSC Code: 5331
MPN: K3VL80CODE728

5331-01-729-4436 (R531490)

NIIN: 01-729-4436
In stock
NSN: 5331-01-729-4436
FSC Code: 5331
MPN: R531490

5331-01-729-3878 (K3VL80,CODE 702)

NIIN: 01-729-3878
In stock
NSN: 5331-01-729-3878
FSC Code: 5331
MPN: K3VL80CODE702

5331-01-729-2885 (R163559)

NIIN: 01-729-2885
In stock
NSN: 5331-01-729-2885
FSC Code: 5331
MPN: R163559

5331-01-729-0143 (2-111)

NIIN: 01-729-0143
In stock
NSN: 5331-01-729-0143
FSC Code: 5331
MPN: 2111

5331-01-728-6739 (500-051-590)

NIIN: 01-728-6739
In stock
NSN: 5331-01-728-6739
FSC Code: 5331
MPN: 500051590

5331-01-728-5766 (803-1385714-72AF-34)

NIIN: 01-728-5766
In stock
NSN: 5331-01-728-5766
FSC Code: 5331
MPN: 803138571472AF34

5331-01-728-5732 (803-1385714-81AF-33)

NIIN: 01-728-5732
In stock
NSN: 5331-01-728-5732
FSC Code: 5331
MPN: 803138571481AF33

5331-01-729-7446 (Y325-114)

NIIN: 01-729-7446
In stock
NSN: 5331-01-729-7446
FSC Code: 5331
MPN: Y325114

5331-01-729-6040 (K3VL80, CODE 711)

NIIN: 01-729-6040
In stock
NSN: 5331-01-729-6040
FSC Code: 5331
MPN: K3VL80CODE711

5331-01-729-6066 (810901-239)

NIIN: 01-729-6066
In stock
NSN: 5331-01-729-6066
FSC Code: 5331
MPN: 810901239

5331-01-729-3334 (R56465)

NIIN: 01-729-3334
In stock
NSN: 5331-01-729-3334
FSC Code: 5331
MPN: R56465

5331-01-729-2850 (13118707)

NIIN: 01-729-2850
In stock
NSN: 5331-01-729-2850
FSC Code: 5331
MPN: 13118707

5331-01-729-1030 (286229-024)

NIIN: 01-729-1030
In stock
NSN: 5331-01-729-1030
FSC Code: 5331
MPN: 286229024

5331-01-728-7893 (4822304)

NIIN: 01-728-7893
In stock
NSN: 5331-01-728-7893
FSC Code: 5331
MPN: 4822304

5331-01-728-7151 (238-5086)

NIIN: 01-728-7151
In stock
NSN: 5331-01-728-7151
FSC Code: 5331
MPN: 2385086

5331-01-729-6957 (J1400P147)

NIIN: 01-729-6957
In stock
NSN: 5331-01-729-6957
FSC Code: 5331
MPN: J1400P147

5331-01-729-5084 (C08732-468)

NIIN: 01-729-5084
In stock
NSN: 5331-01-729-5084
FSC Code: 5331
MPN: C08732468

5331-01-729-4792 (R532584)

NIIN: 01-729-4792
In stock
NSN: 5331-01-729-4792
FSC Code: 5331
MPN: R532584

5331-01-729-4501 (R62976)

NIIN: 01-729-4501
In stock
NSN: 5331-01-729-4501
FSC Code: 5331
MPN: R62976

5331-01-728-9675 (071811)

NIIN: 01-728-9675
In stock
NSN: 5331-01-728-9675
FSC Code: 5331
MPN: 071811

5331-01-728-7152 (515-052-601)

NIIN: 01-728-7152
In stock
NSN: 5331-01-728-7152
FSC Code: 5331
MPN: 515052601

5331-01-728-6962 (O-RING, -225)

NIIN: 01-728-6962
In stock
NSN: 5331-01-728-6962
FSC Code: 5331
MPN: ORING225

5331-01-728-5410 (M22050-2-333)

NIIN: 01-728-5410
In stock
NSN: 5331-01-728-5410
FSC Code: 5331
MPN: M220502333

5331-01-728-6331 (D014S594)

NIIN: 01-728-6331
In stock
NSN: 5331-01-728-6331
FSC Code: 5331
MPN: D014S594

5331-01-728-5905 (VM835-75 2-177)

NIIN: 01-728-5905
In stock
NSN: 5331-01-728-5905
FSC Code: 5331
MPN: VM835752177

5331-01-728-5808 (803-1385714-32AF-34)

NIIN: 01-728-5808
In stock
NSN: 5331-01-728-5808
FSC Code: 5331
MPN: 803138571432AF34

5331-01-728-1282 (U9-430)

NIIN: 01-728-1282
In stock
NSN: 5331-01-728-1282
FSC Code: 5331
MPN: U9430

5331-01-728-8559 (44001590)

NIIN: 01-728-8559
In stock
NSN: 5331-01-728-8559
FSC Code: 5331
MPN: 44001590

5331-01-728-6778 (500-001-015)

NIIN: 01-728-6778
In stock
NSN: 5331-01-728-6778
FSC Code: 5331
MPN: 500001015

5331-01-729-2654 (01068222)

NIIN: 01-729-2654
In stock
NSN: 5331-01-729-2654
FSC Code: 5331
MPN: 01068222

5331-01-729-1842 (87867677)

NIIN: 01-729-1842
In stock
NSN: 5331-01-729-1842
FSC Code: 5331
MPN: 87867677

5331-01-729-0701 (00018)

NIIN: 01-729-0701
In stock
NSN: 5331-01-729-0701
FSC Code: 5331
MPN: 00018

5331-01-728-7527 (GS144)

NIIN: 01-728-7527
In stock
NSN: 5331-01-728-7527
FSC Code: 5331
MPN: GS144

5331-01-728-6347 (515-002-014)

NIIN: 01-728-6347
In stock
NSN: 5331-01-728-6347
FSC Code: 5331
MPN: 515002014

5331-01-728-5928 (D010A621007)

NIIN: 01-728-5928
In stock
NSN: 5331-01-728-5928
FSC Code: 5331
MPN: D010A621007

5331-01-728-5404 (M22050-2-472)

NIIN: 01-728-5404
In stock
NSN: 5331-01-728-5404
FSC Code: 5331
MPN: M220502472

5331-01-728-4924 (M22050-2-467)

NIIN: 01-728-4924
In stock
NSN: 5331-01-728-4924
FSC Code: 5331
MPN: M220502467

5331-01-728-4841 (MS282775-111)

NIIN: 01-728-4841
In stock
NSN: 5331-01-728-4841
FSC Code: 5331
MPN: MS282775111

5331-01-727-9923 (SK-535306-BB)

NIIN: 01-727-9923
In stock
NSN: 5331-01-727-9923
FSC Code: 5331
MPN: SK535306BB

5331-01-728-6832 (D014K933008)

NIIN: 01-728-6832
In stock
NSN: 5331-01-728-6832
FSC Code: 5331
MPN: D014K933008

5331-01-728-5894 (VM125-75 2-173)

NIIN: 01-728-5894
In stock
NSN: 5331-01-728-5894
FSC Code: 5331
MPN: VM125752173

5331-01-728-5235 (22164925)

NIIN: 01-728-5235
In stock
NSN: 5331-01-728-5235
FSC Code: 5331
MPN: 22164925

5331-01-728-1316 (AS568B-001 1/2 70SL)

NIIN: 01-728-1316
In stock
NSN: 5331-01-728-1316
FSC Code: 5331
MPN: AS568B0011270SL

5331-01-728-0113 (95987970)

NIIN: 01-728-0113
In stock
NSN: 5331-01-728-0113
FSC Code: 5331
MPN: 95987970

5331-01-727-6941 (270-1820)

NIIN: 01-727-6941
In stock
NSN: 5331-01-727-6941
FSC Code: 5331
MPN: 2701820

5331-01-728-5929 (VM125-75 2-178)

NIIN: 01-728-5929
In stock
NSN: 5331-01-728-5929
FSC Code: 5331
MPN: VM125752178

5331-01-727-8862 (CB90347-503)

NIIN: 01-727-8862
In stock
NSN: 5331-01-727-8862
FSC Code: 5331
MPN: CB90347503