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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.

5331-01-315-7282 (AV)

NIIN: 01-315-7282
In stock
NSN: 5331-01-315-7282
FSC Code: 5331
MPN: AV

5331-01-412-6372 (601-2)

NIIN: 01-412-6372
In stock
NSN: 5331-01-412-6372
FSC Code: 5331
MPN: 6012

5331-01-546-8376 (601015-2)

NIIN: 01-546-8376
In stock
NSN: 5331-01-546-8376
FSC Code: 5331
MPN: 6010152

5331-01-546-8372 (601015-0)

NIIN: 01-546-8372
In stock
NSN: 5331-01-546-8372
FSC Code: 5331
MPN: 6010150

5331-01-546-8373 (601015-8)

NIIN: 01-546-8373
In stock
NSN: 5331-01-546-8373
FSC Code: 5331
MPN: 6010158

5331-01-546-5565 (601014-7)

NIIN: 01-546-5565
In stock
NSN: 5331-01-546-5565
FSC Code: 5331
MPN: 6010147

5331-01-333-4463 (AT4526)

NIIN: 01-333-4463
In stock
NSN: 5331-01-333-4463
FSC Code: 5331
MPN: AT4526

5331-01-507-3962 (600P00788-0001)

NIIN: 01-507-3962
In stock
NSN: 5331-01-507-3962
FSC Code: 5331
MPN: 600P007880001

5331-01-518-9345 (600AL-12)

NIIN: 01-518-9345
In stock
NSN: 5331-01-518-9345
FSC Code: 5331
MPN: 600AL12

5331-01-188-4614 (AT29941)

NIIN: 01-188-4614
In stock
NSN: 5331-01-188-4614
FSC Code: 5331
MPN: AT29941

5331-01-340-8228 (600991-12)

NIIN: 01-340-8228
In stock
NSN: 5331-01-340-8228
FSC Code: 5331
MPN: 60099112

5331-01-340-8227 (600991-7)

NIIN: 01-340-8227
In stock
NSN: 5331-01-340-8227
FSC Code: 5331
MPN: 6009917

5331-01-340-8225 (600991-4)

NIIN: 01-340-8225
In stock
NSN: 5331-01-340-8225
FSC Code: 5331
MPN: 6009914

5331-01-340-8226 (600991-5)

NIIN: 01-340-8226
In stock
NSN: 5331-01-340-8226
FSC Code: 5331
MPN: 6009915

5331-01-270-1758 (AT134)

NIIN: 01-270-1758
In stock
NSN: 5331-01-270-1758
FSC Code: 5331
MPN: AT134

5331-01-265-0570 (AT134-A)

NIIN: 01-265-0570
In stock
NSN: 5331-01-265-0570
FSC Code: 5331
MPN: AT134A

5331-01-483-1799 (60069136-010)

NIIN: 01-483-1799
In stock
NSN: 5331-01-483-1799
FSC Code: 5331
MPN: 60069136010

5331-01-338-0256 (AT114530)

NIIN: 01-338-0256
In stock
NSN: 5331-01-338-0256
FSC Code: 5331
MPN: AT114530

5331-01-272-9882 (AT0R20)

NIIN: 01-272-9882
In stock
NSN: 5331-01-272-9882
FSC Code: 5331
MPN: AT0R20

5331-01-395-4646 (ST7M258H550)

NIIN: 01-395-4646
In stock
NSN: 5331-01-395-4646
FSC Code: 5331
MPN: ST7M258H550

5331-01-380-0727 (ST7M258H350)

NIIN: 01-380-0727
In stock
NSN: 5331-01-380-0727
FSC Code: 5331
MPN: ST7M258H350

5331-01-368-7260 (ST7M258H225)

NIIN: 01-368-7260
In stock
NSN: 5331-01-368-7260
FSC Code: 5331
MPN: ST7M258H225

5331-01-448-3377 (600-0152)

NIIN: 01-448-3377
In stock
NSN: 5331-01-448-3377
FSC Code: 5331
MPN: 6000152

5331-00-641-8911 (ASTM)

NIIN: 00-641-8911
In stock
NSN: 5331-00-641-8911
FSC Code: 5331
MPN: ASTM

5331-00-171-7399 (ASTM)

NIIN: 00-171-7399
In stock
NSN: 5331-00-171-7399
FSC Code: 5331
MPN: ASTM

5331-01-165-6450 (A-SP-90081-254)

NIIN: 01-165-6450
In stock
NSN: 5331-01-165-6450
FSC Code: 5331
MPN: ASP90081254

5331-01-165-6452 (A-SP-90074)

NIIN: 01-165-6452
In stock
NSN: 5331-01-165-6452
FSC Code: 5331
MPN: ASP90074

5331-01-166-0378 (A-SP-90082-028)

NIIN: 01-166-0378
In stock
NSN: 5331-01-166-0378
FSC Code: 5331
MPN: ASP90082028

5331-01-165-6451 (A-SP-90080-163)

NIIN: 01-165-6451
In stock
NSN: 5331-01-165-6451
FSC Code: 5331
MPN: ASP90080163

5331-21-913-3298 (B8107048)

NIIN: 21-913-3298
In stock
NSN: 5331-21-913-3298
FSC Code: 5331
MPN: B8107048

5331-21-913-3297 (B8107048)

NIIN: 21-913-3297
In stock
NSN: 5331-21-913-3297
FSC Code: 5331
MPN: B8107048

5331-12-347-1845 (6.7X1.4)

NIIN: 12-347-1845
In stock
NSN: 5331-12-347-1845
FSC Code: 5331
MPN: 67X14

5331-01-083-6504 (ASM)

NIIN: 01-083-6504
In stock
NSN: 5331-01-083-6504
FSC Code: 5331
MPN: ASM

5331-01-443-0339 (6.362-572.0)

NIIN: 01-443-0339
In stock
NSN: 5331-01-443-0339
FSC Code: 5331
MPN: 63625720

5331-01-447-4042 (6.362-527.0)

NIIN: 01-447-4042
In stock
NSN: 5331-01-447-4042
FSC Code: 5331
MPN: 63625270

5331-01-443-0349 (6.362-515.0)

NIIN: 01-443-0349
In stock
NSN: 5331-01-443-0349
FSC Code: 5331
MPN: 63625150

5331-12-347-8509 (6.419-059.0)

NIIN: 12-347-8509
In stock
NSN: 5331-12-347-8509
FSC Code: 5331
MPN: 64190590

5331-01-443-0352 (6.362-153.0)

NIIN: 01-443-0352
In stock
NSN: 5331-01-443-0352
FSC Code: 5331
MPN: 63621530

5331-01-443-0342 (6.419-059.0)

NIIN: 01-443-0342
In stock
NSN: 5331-01-443-0342
FSC Code: 5331
MPN: 64190590

5331-12-374-6500 (6.363-278.0)

NIIN: 12-374-6500
In stock
NSN: 5331-12-374-6500
FSC Code: 5331
MPN: 63632780

5331-01-249-1632 (ASIB1425E1-8-15)

NIIN: 01-249-1632
In stock
NSN: 5331-01-249-1632
FSC Code: 5331
MPN: ASIB1425E1815

5331-12-347-8508 (6.362-527.0)

NIIN: 12-347-8508
In stock
NSN: 5331-12-347-8508
FSC Code: 5331
MPN: 63625270

5331-01-443-0341 (6.362-506.0)

NIIN: 01-443-0341
In stock
NSN: 5331-01-443-0341
FSC Code: 5331
MPN: 63625060

5331-01-266-8594 (ASI-ND-B122E1-2-15)

NIIN: 01-266-8594
In stock
NSN: 5331-01-266-8594
FSC Code: 5331
MPN: ASINDB122E1215

5331-01-443-0354 (6.362-077.0)

NIIN: 01-443-0354
In stock
NSN: 5331-01-443-0354
FSC Code: 5331
MPN: 63620770

5331-01-443-0345 (6.362-513.0)

NIIN: 01-443-0345
In stock
NSN: 5331-01-443-0345
FSC Code: 5331
MPN: 63625130

5331-01-443-0351 (6.362-545.0)

NIIN: 01-443-0351
In stock
NSN: 5331-01-443-0351
FSC Code: 5331
MPN: 63625450

5331-01-443-0347 (6.362-510.0)

NIIN: 01-443-0347
In stock
NSN: 5331-01-443-0347
FSC Code: 5331
MPN: 63625100