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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.

5331-01-508-4406 (65145-1)

NIIN: 01-508-4406
In stock
NSN: 5331-01-508-4406
FSC Code: 5331
MPN: 651451

5331-01-450-1274 (658-248-910)

NIIN: 01-450-1274
In stock
NSN: 5331-01-450-1274
FSC Code: 5331
MPN: 658248910

5331-01-449-7100 (65118-017-910)

NIIN: 01-449-7100
In stock
NSN: 5331-01-449-7100
FSC Code: 5331
MPN: 65118017910

5331-01-420-8956 (65107-B-992)

NIIN: 01-420-8956
In stock
NSN: 5331-01-420-8956
FSC Code: 5331
MPN: 65107B992

5331-01-441-9361 (65104-H-990)

NIIN: 01-441-9361
In stock
NSN: 5331-01-441-9361
FSC Code: 5331
MPN: 65104H990

5331-00-238-5443 (CB152AHL01)

NIIN: 00-238-5443
In stock
NSN: 5331-00-238-5443
FSC Code: 5331
MPN: CB152AHL01

5331-00-113-8571 (CB10100-6)

NIIN: 00-113-8571
In stock
NSN: 5331-00-113-8571
FSC Code: 5331
MPN: CB101006

5331-00-113-8570 (CB10100-10)

NIIN: 00-113-8570
In stock
NSN: 5331-00-113-8570
FSC Code: 5331
MPN: CB1010010

5331-01-366-0481 (650436-A16)

NIIN: 01-366-0481
In stock
NSN: 5331-01-366-0481
FSC Code: 5331
MPN: 650436A16

5331-01-407-3835 (740243-820)

NIIN: 01-407-3835
In stock
NSN: 5331-01-407-3835
FSC Code: 5331
MPN: 740243820

5331-01-494-0512 (650437FIG8-37-22)

NIIN: 01-494-0512
In stock
NSN: 5331-01-494-0512
FSC Code: 5331
MPN: 650437FIG83722

5331-01-494-8906 (650436-A16)

NIIN: 01-494-8906
In stock
NSN: 5331-01-494-8906
FSC Code: 5331
MPN: 650436A16

5331-01-527-8005 (6-503N0674-70)

NIIN: 01-527-8005
In stock
NSN: 5331-01-527-8005
FSC Code: 5331
MPN: 6503N067470

5331-01-420-5127 (7-755-018010)

NIIN: 01-420-5127
In stock
NSN: 5331-01-420-5127
FSC Code: 5331
MPN: 7755018010

5331-01-421-7633 (6500E1304348-015)

NIIN: 01-421-7633
In stock
NSN: 5331-01-421-7633
FSC Code: 5331
MPN: 6500E1304348015

5331-01-459-1619 (6500015-001)

NIIN: 01-459-1619
In stock
NSN: 5331-01-459-1619
FSC Code: 5331
MPN: 6500015001

5331-01-459-1618 (6500015-002)

NIIN: 01-459-1618
In stock
NSN: 5331-01-459-1618
FSC Code: 5331
MPN: 6500015002

5331-01-548-2194 (65.96501-0032)

NIIN: 01-548-2194
In stock
NSN: 5331-01-548-2194
FSC Code: 5331
MPN: 65965010032

5331-01-456-2385 (6499-354114-1)

NIIN: 01-456-2385
In stock
NSN: 5331-01-456-2385
FSC Code: 5331
MPN: 64993541141

5331-01-543-1647 (649-788-432-0)

NIIN: 01-543-1647
In stock
NSN: 5331-01-543-1647
FSC Code: 5331
MPN: 6497884320

5331-01-570-9008 (649-788-214-0)

NIIN: 01-570-9008
In stock
NSN: 5331-01-570-9008
FSC Code: 5331
MPN: 6497882140

5331-01-499-1380 (649-788-415-0)

NIIN: 01-499-1380
In stock
NSN: 5331-01-499-1380
FSC Code: 5331
MPN: 6497884150

5331-01-194-4705 (CA14481)

NIIN: 01-194-4705
In stock
NSN: 5331-01-194-4705
FSC Code: 5331
MPN: CA14481

5331-01-136-6137 (CA13847-PC255)

NIIN: 01-136-6137
In stock
NSN: 5331-01-136-6137
FSC Code: 5331
MPN: CA13847PC255

5331-01-217-6998 (CA14263)

NIIN: 01-217-6998
In stock
NSN: 5331-01-217-6998
FSC Code: 5331
MPN: CA14263

5331-01-193-9392 (CA11554)

NIIN: 01-193-9392
In stock
NSN: 5331-01-193-9392
FSC Code: 5331
MPN: CA11554

5331-01-033-2536 (CA110-239)

NIIN: 01-033-2536
In stock
NSN: 5331-01-033-2536
FSC Code: 5331
MPN: CA110239

5331-01-188-7632 (CA11057-255)

NIIN: 01-188-7632
In stock
NSN: 5331-01-188-7632
FSC Code: 5331
MPN: CA11057255

5331-01-195-8876 (CA10976-70)

NIIN: 01-195-8876
In stock
NSN: 5331-01-195-8876
FSC Code: 5331
MPN: CA1097670

5331-01-199-6262 (CA10999)

NIIN: 01-199-6262
In stock
NSN: 5331-01-199-6262
FSC Code: 5331
MPN: CA10999

5331-01-079-9955 (CA-048591)

NIIN: 01-079-9955
In stock
NSN: 5331-01-079-9955
FSC Code: 5331
MPN: CA048591

5331-01-458-8138 (645001Q237)

NIIN: 01-458-8138
In stock
NSN: 5331-01-458-8138
FSC Code: 5331
MPN: 645001Q237

5331-01-018-7133 (C9NN-C855-B)

NIIN: 01-018-7133
In stock
NSN: 5331-01-018-7133
FSC Code: 5331
MPN: C9NNC855B

5331-01-358-7947 (6445Z88)

NIIN: 01-358-7947
In stock
NSN: 5331-01-358-7947
FSC Code: 5331
MPN: 6445Z88

5331-01-379-0526 (6445Z89)

NIIN: 01-379-0526
In stock
NSN: 5331-01-379-0526
FSC Code: 5331
MPN: 6445Z89

5331-01-411-2363 (64-46-15)

NIIN: 01-411-2363
In stock
NSN: 5331-01-411-2363
FSC Code: 5331
MPN: 644615

5331-01-472-7267 (644260-403)

NIIN: 01-472-7267
In stock
NSN: 5331-01-472-7267
FSC Code: 5331
MPN: 644260403

5331-01-536-0168 (644260-401)

NIIN: 01-536-0168
In stock
NSN: 5331-01-536-0168
FSC Code: 5331
MPN: 644260401

5331-01-225-8560 (C93601-810018)

NIIN: 01-225-8560
In stock
NSN: 5331-01-225-8560
FSC Code: 5331
MPN: C93601810018

5331-01-225-8561 (C93602-870055)

NIIN: 01-225-8561
In stock
NSN: 5331-01-225-8561
FSC Code: 5331
MPN: C93602870055

5331-00-291-2394 (C93174ISSUE2)

NIIN: 00-291-2394
In stock
NSN: 5331-00-291-2394
FSC Code: 5331
MPN: C93174ISSUE2

5331-00-830-2683 (C914-41-70)

NIIN: 00-830-2683
In stock
NSN: 5331-00-830-2683
FSC Code: 5331
MPN: C9144170

5331-00-913-6598 (C914-4-70)

NIIN: 00-913-6598
In stock
NSN: 5331-00-913-6598
FSC Code: 5331
MPN: C914470

5331-00-279-9319 (C90ST0109-03)

NIIN: 00-279-9319
In stock
NSN: 5331-00-279-9319
FSC Code: 5331
MPN: C90ST010903

5331-01-190-1876 (C9)

NIIN: 01-190-1876
In stock
NSN: 5331-01-190-1876
FSC Code: 5331
MPN: C9

5331-01-329-3766 (C-89-004)

NIIN: 01-329-3766
In stock
NSN: 5331-01-329-3766
FSC Code: 5331
MPN: C89004

5331-01-210-5691 (C867-7301)

NIIN: 01-210-5691
In stock
NSN: 5331-01-210-5691
FSC Code: 5331
MPN: C8677301

5331-01-264-3744 (C-8529042)

NIIN: 01-264-3744
In stock
NSN: 5331-01-264-3744
FSC Code: 5331
MPN: C8529042