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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.

5331-01-438-8034 (6S15W12221)

NIIN: 01-438-8034
In stock
NSN: 5331-01-438-8034
FSC Code: 5331
MPN: 6S15W12221

5331-01-474-1721 (6S-3002)

NIIN: 01-474-1721
In stock
NSN: 5331-01-474-1721
FSC Code: 5331
MPN: 6S3002

5331-01-528-6360 (6Q8387)

NIIN: 01-528-6360
In stock
NSN: 5331-01-528-6360
FSC Code: 5331
MPN: 6Q8387

5331-01-527-9929 (6Q8392)

NIIN: 01-527-9929
In stock
NSN: 5331-01-527-9929
FSC Code: 5331
MPN: 6Q8392

5331-01-528-0607 (6Q8393)

NIIN: 01-528-0607
In stock
NSN: 5331-01-528-0607
FSC Code: 5331
MPN: 6Q8393

5331-01-422-5375 (6P-80)

NIIN: 01-422-5375
In stock
NSN: 5331-01-422-5375
FSC Code: 5331
MPN: 6P80

5331-01-422-5356 (6P-217)

NIIN: 01-422-5356
In stock
NSN: 5331-01-422-5356
FSC Code: 5331
MPN: 6P217

5331-01-422-5374 (6P-218)

NIIN: 01-422-5374
In stock
NSN: 5331-01-422-5374
FSC Code: 5331
MPN: 6P218

5331-01-377-5191 (6M5218)

NIIN: 01-377-5191
In stock
NSN: 5331-01-377-5191
FSC Code: 5331
MPN: 6M5218

5331-01-564-8713 (6KK954)

NIIN: 01-564-8713
In stock
NSN: 5331-01-564-8713
FSC Code: 5331
MPN: 6KK954

5331-01-526-1967 (6KK736)

NIIN: 01-526-1967
In stock
NSN: 5331-01-526-1967
FSC Code: 5331
MPN: 6KK736

5331-01-526-0455 (6KK610)

NIIN: 01-526-0455
In stock
NSN: 5331-01-526-0455
FSC Code: 5331
MPN: 6KK610

5331-01-438-8020 (6S30L12221)

NIIN: 01-438-8020
In stock
NSN: 5331-01-438-8020
FSC Code: 5331
MPN: 6S30L12221

5331-01-351-2736 (6I-4545)

NIIN: 01-351-2736
In stock
NSN: 5331-01-351-2736
FSC Code: 5331
MPN: 6I4545

5331-01-471-5549 (6I-0258)

NIIN: 01-471-5549
In stock
NSN: 5331-01-471-5549
FSC Code: 5331
MPN: 6I0258

5331-01-429-1982 (6I0444)

NIIN: 01-429-1982
In stock
NSN: 5331-01-429-1982
FSC Code: 5331
MPN: 6I0444

5331-01-411-2484 (H-10845-M)

NIIN: 01-411-2484
In stock
NSN: 5331-01-411-2484
FSC Code: 5331
MPN: H10845M

5331-01-388-1917 (6H5672)

NIIN: 01-388-1917
In stock
NSN: 5331-01-388-1917
FSC Code: 5331
MPN: 6H5672

5331-01-316-5865 (DA-1326)

NIIN: 01-316-5865
In stock
NSN: 5331-01-316-5865
FSC Code: 5331
MPN: DA1326

5331-01-317-0494 (DA-1326)

NIIN: 01-317-0494
In stock
NSN: 5331-01-317-0494
FSC Code: 5331
MPN: DA1326

5331-00-801-1283 (D9908-11)

NIIN: 00-801-1283
In stock
NSN: 5331-00-801-1283
FSC Code: 5331
MPN: D990811

5331-01-515-0319 (6F-4718)

NIIN: 01-515-0319
In stock
NSN: 5331-01-515-0319
FSC Code: 5331
MPN: 6F4718

5331-01-378-7316 (6ER001-114)

NIIN: 01-378-7316
In stock
NSN: 5331-01-378-7316
FSC Code: 5331
MPN: 6ER001114

5331-01-379-1067 (6ER001-342)

NIIN: 01-379-1067
In stock
NSN: 5331-01-379-1067
FSC Code: 5331
MPN: 6ER001342

5331-01-433-6127 (6ER001-114)

NIIN: 01-433-6127
In stock
NSN: 5331-01-433-6127
FSC Code: 5331
MPN: 6ER001114

5331-01-226-5946 (D-95000-111)

NIIN: 01-226-5946
In stock
NSN: 5331-01-226-5946
FSC Code: 5331
MPN: D95000111

5331-01-226-5947 (D-95000-118)

NIIN: 01-226-5947
In stock
NSN: 5331-01-226-5947
FSC Code: 5331
MPN: D95000118

5331-00-846-3372 (D-95000-012)

NIIN: 00-846-3372
In stock
NSN: 5331-00-846-3372
FSC Code: 5331
MPN: D95000012

5331-01-277-2195 (D-93)

NIIN: 01-277-2195
In stock
NSN: 5331-01-277-2195
FSC Code: 5331
MPN: D93

5331-01-277-2194 (D-92)

NIIN: 01-277-2194
In stock
NSN: 5331-01-277-2194
FSC Code: 5331
MPN: D92

5331-01-394-8522 (6D7128)

NIIN: 01-394-8522
In stock
NSN: 5331-01-394-8522
FSC Code: 5331
MPN: 6D7128

5331-01-336-8780 (D-890238)

NIIN: 01-336-8780
In stock
NSN: 5331-01-336-8780
FSC Code: 5331
MPN: D890238

5331-01-377-2906 (CV162943)

NIIN: 01-377-2906
In stock
NSN: 5331-01-377-2906
FSC Code: 5331
MPN: CV162943

5331-00-593-3492 (D8732-1)

NIIN: 00-593-3492
In stock
NSN: 5331-00-593-3492
FSC Code: 5331
MPN: D87321

5331-01-320-9575 (D-85)

NIIN: 01-320-9575
In stock
NSN: 5331-01-320-9575
FSC Code: 5331
MPN: D85

5331-01-323-8856 (D844-4057-11)

NIIN: 01-323-8856
In stock
NSN: 5331-01-323-8856
FSC Code: 5331
MPN: D844405711

5331-01-268-1246 (D844-3030-7)

NIIN: 01-268-1246
In stock
NSN: 5331-01-268-1246
FSC Code: 5331
MPN: D84430307

5331-01-264-1089 (D844-3005-83)

NIIN: 01-264-1089
In stock
NSN: 5331-01-264-1089
FSC Code: 5331
MPN: D844300583

5331-01-274-6840 (D844-4017-9)

NIIN: 01-274-6840
In stock
NSN: 5331-01-274-6840
FSC Code: 5331
MPN: D84440179

5331-01-223-6763 (D844-4090-2)

NIIN: 01-223-6763
In stock
NSN: 5331-01-223-6763
FSC Code: 5331
MPN: D84440902

5331-01-267-1721 (D84232)

NIIN: 01-267-1721
In stock
NSN: 5331-01-267-1721
FSC Code: 5331
MPN: D84232

5331-01-272-3414 (D84232)

NIIN: 01-272-3414
In stock
NSN: 5331-01-272-3414
FSC Code: 5331
MPN: D84232

5331-01-267-1720 (D84232)

NIIN: 01-267-1720
In stock
NSN: 5331-01-267-1720
FSC Code: 5331
MPN: D84232

5331-01-326-7448 (D841-4032-8)

NIIN: 01-326-7448
In stock
NSN: 5331-01-326-7448
FSC Code: 5331
MPN: D84140328

5331-01-267-1722 (D84232)

NIIN: 01-267-1722
In stock
NSN: 5331-01-267-1722
FSC Code: 5331
MPN: D84232

5331-01-267-1723 (D84232)

NIIN: 01-267-1723
In stock
NSN: 5331-01-267-1723
FSC Code: 5331
MPN: D84232

5331-01-323-8857 (D841-4029-8)

NIIN: 01-323-8857
In stock
NSN: 5331-01-323-8857
FSC Code: 5331
MPN: D84140298

5331-01-371-3617 (6-A247-SN991632)

NIIN: 01-371-3617
In stock
NSN: 5331-01-371-3617
FSC Code: 5331
MPN: 6A247SN991632