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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.

5331-99-768-3793 (2829/A/1-1/4INS/8)

NIIN: 99-768-3793
In stock
NSN: 5331-99-768-3793
FSC Code: 5331
MPN: 2829A114INS8

5331-99-588-2214 (2829/A/1-1/4INS/7)

NIIN: 99-588-2214
In stock
NSN: 5331-99-588-2214
FSC Code: 5331
MPN: 2829A114INS7

5331-01-295-2953 (662E730)

NIIN: 01-295-2953
In stock
NSN: 5331-01-295-2953
FSC Code: 5331
MPN: 662E730

5331-01-295-2952 (662E730)

NIIN: 01-295-2952
In stock
NSN: 5331-01-295-2952
FSC Code: 5331
MPN: 662E730

5331-01-338-6645 (662179C1)

NIIN: 01-338-6645
In stock
NSN: 5331-01-338-6645
FSC Code: 5331
MPN: 662179C1

5331-01-239-1344 (6619492A1)

NIIN: 01-239-1344
In stock
NSN: 5331-01-239-1344
FSC Code: 5331
MPN: 6619492A1

5331-01-287-8653 (66122-E)

NIIN: 01-287-8653
In stock
NSN: 5331-01-287-8653
FSC Code: 5331
MPN: 66122E

5331-01-571-9722 (281-8258)

NIIN: 01-571-9722
In stock
NSN: 5331-01-571-9722
FSC Code: 5331
MPN: 2818258

5331-01-340-6859 (B2817-5727-01)

NIIN: 01-340-6859
In stock
NSN: 5331-01-340-6859
FSC Code: 5331
MPN: B2817572701

5331-01-146-6059 (66-113)

NIIN: 01-146-6059
In stock
NSN: 5331-01-146-6059
FSC Code: 5331
MPN: 66113

5331-01-340-6860 (C2817-5726-01)

NIIN: 01-340-6860
In stock
NSN: 5331-01-340-6860
FSC Code: 5331
MPN: C2817572601

5331-00-709-2751 (6610054A1)

NIIN: 00-709-2751
In stock
NSN: 5331-00-709-2751
FSC Code: 5331
MPN: 6610054A1

5331-01-549-2437 (G547-0002-281250-0010-62CP)

NIIN: 01-549-2437
In stock
NSN: 5331-01-549-2437
FSC Code: 5331
MPN: G5470002281250001062CP

5331-01-224-8601 (660-50760)

NIIN: 01-224-8601
In stock
NSN: 5331-01-224-8601
FSC Code: 5331
MPN: 66050760

5331-01-549-8542 (G547-0002-281250-0011-63CP)

NIIN: 01-549-8542
In stock
NSN: 5331-01-549-8542
FSC Code: 5331
MPN: G5470002281250001163CP

5331-01-288-1080 (660-006)

NIIN: 01-288-1080
In stock
NSN: 5331-01-288-1080
FSC Code: 5331
MPN: 660006

5331-00-952-5431 (660000P47)

NIIN: 00-952-5431
In stock
NSN: 5331-00-952-5431
FSC Code: 5331
MPN: 660000P47

5331-00-402-4612 (660000P123)

NIIN: 00-402-4612
In stock
NSN: 5331-00-402-4612
FSC Code: 5331
MPN: 660000P123

5331-01-258-1557 (660000P29)

NIIN: 01-258-1557
In stock
NSN: 5331-01-258-1557
FSC Code: 5331
MPN: 660000P29

5331-01-095-3178 (660000P27)

NIIN: 01-095-3178
In stock
NSN: 5331-01-095-3178
FSC Code: 5331
MPN: 660000P27

5331-00-052-2085 (65B21085-1)

NIIN: 00-052-2085
In stock
NSN: 5331-00-052-2085
FSC Code: 5331
MPN: 65B210851

5331-00-913-8641 (65A32377-09)

NIIN: 00-913-8641
In stock
NSN: 5331-00-913-8641
FSC Code: 5331
MPN: 65A3237709

5331-01-375-7365 (280566-553ITEM63)

NIIN: 01-375-7365
In stock
NSN: 5331-01-375-7365
FSC Code: 5331
MPN: 280566553ITEM63

5331-01-076-9342 (6596-B)

NIIN: 01-076-9342
In stock
NSN: 5331-01-076-9342
FSC Code: 5331
MPN: 6596B

5331-01-080-0580 (6590-G)

NIIN: 01-080-0580
In stock
NSN: 5331-01-080-0580
FSC Code: 5331
MPN: 6590G

5331-01-468-0522 (4400871-1340)

NIIN: 01-468-0522
In stock
NSN: 5331-01-468-0522
FSC Code: 5331
MPN: 44008711340

5331-01-539-8997 (280048-188)

NIIN: 01-539-8997
In stock
NSN: 5331-01-539-8997
FSC Code: 5331
MPN: 280048188

5331-01-074-1997 (6581-243-925)

NIIN: 01-074-1997
In stock
NSN: 5331-01-074-1997
FSC Code: 5331
MPN: 6581243925

5331-01-288-7707 (657862C1)

NIIN: 01-288-7707
In stock
NSN: 5331-01-288-7707
FSC Code: 5331
MPN: 657862C1

5331-14-423-7547 (I16495SR822A-60)

NIIN: 14-423-7547
In stock
NSN: 5331-14-423-7547
FSC Code: 5331
MPN: I16495SR822A60

5331-01-524-8309 (27RC0312216-057)

NIIN: 01-524-8309
In stock
NSN: 5331-01-524-8309
FSC Code: 5331
MPN: 27RC0312216057

5331-01-539-6287 (27RD0143403A057)

NIIN: 01-539-6287
In stock
NSN: 5331-01-539-6287
FSC Code: 5331
MPN: 27RD0143403A057

5331-01-524-8233 (27PC0336806-057)

NIIN: 01-524-8233
In stock
NSN: 5331-01-524-8233
FSC Code: 5331
MPN: 27PC0336806057

5331-01-186-6244 (65742-1)

NIIN: 01-186-6244
In stock
NSN: 5331-01-186-6244
FSC Code: 5331
MPN: 657421

5331-01-166-2096 (65742-2)

NIIN: 01-166-2096
In stock
NSN: 5331-01-166-2096
FSC Code: 5331
MPN: 657422

5331-01-093-0646 (6572-128-920)

NIIN: 01-093-0646
In stock
NSN: 5331-01-093-0646
FSC Code: 5331
MPN: 6572128920

5331-01-118-2322 (6572-011-920)

NIIN: 01-118-2322
In stock
NSN: 5331-01-118-2322
FSC Code: 5331
MPN: 6572011920

5331-00-556-7176 (6571-00)

NIIN: 00-556-7176
In stock
NSN: 5331-00-556-7176
FSC Code: 5331
MPN: 657100

5331-99-770-6110 (DEFSTAN02-337-2793-57-MN70)

NIIN: 99-770-6110
In stock
NSN: 5331-99-770-6110
FSC Code: 5331
MPN: DEFSTAN02337279357MN70

5331-01-129-8890 (656036-E000)

NIIN: 01-129-8890
In stock
NSN: 5331-01-129-8890
FSC Code: 5331
MPN: 656036E000

5331-01-164-8303 (655A770)

NIIN: 01-164-8303
In stock
NSN: 5331-01-164-8303
FSC Code: 5331
MPN: 655A770

5331-01-569-7241 (27-842-0)

NIIN: 01-569-7241
In stock
NSN: 5331-01-569-7241
FSC Code: 5331
MPN: 278420

5331-00-171-6267 (6-55060)

NIIN: 00-171-6267
In stock
NSN: 5331-00-171-6267
FSC Code: 5331
MPN: 655060

5331-01-569-7240 (27-806-0)

NIIN: 01-569-7240
In stock
NSN: 5331-01-569-7240
FSC Code: 5331
MPN: 278060

5331-01-566-8577 (2777-0701-7)

NIIN: 01-566-8577
In stock
NSN: 5331-01-566-8577
FSC Code: 5331
MPN: 277707017

5331-01-566-9057 (2777-0701-2)

NIIN: 01-566-9057
In stock
NSN: 5331-01-566-9057
FSC Code: 5331
MPN: 277707012

5331-01-357-8065 (2775593-101)

NIIN: 01-357-8065
In stock
NSN: 5331-01-357-8065
FSC Code: 5331
MPN: 2775593101

5331-01-097-4189 (654E4645-13)

NIIN: 01-097-4189
In stock
NSN: 5331-01-097-4189
FSC Code: 5331
MPN: 654E464513