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Home/Military Standard parts/Seals & Fittings/FSC 5331
Category // FSC 5331 · 53,078 items

O-Ring

Round-section sealing rings used in grooves to seal fluid and gas connections; every item filed here is an O-ring.

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53,078 items

  1. O-RING NSN 5331-00-584-0149 P/N NAS617-10 · PRP1487-910 · 5R18-10 · 5140-534001-10 · +29 more
  2. O-RING NSN 5331-00-579-1070 P/N 156-01777-27 · 330-7377 · 7377-330 · GS570EM330 · +29 more
  3. O-RING NSN 5331-00-559-2632 P/N JC1312 · 58-03-10 · 30115K · 30115-1A · +29 more
  4. O-RING NSN 5331-00-291-7384 P/N 7866-133 · GS570EM133 · 60-P-31-133 · 02637 · +29 more
  5. O-RING NSN 5331-00-291-7295 P/N 7866-136 · 60-P-31-136 · PX-1775-136 · 10V60-141-136 · +29 more
  6. O-RING NSN 5331-00-265-1097 P/N 2-129 · 7866-129 · GS570EM129 · 60-P-31-129 · +29 more
  7. O-RING NSN 5331-00-265-1084 P/N GS570EM131 · 7866-131 · 60-P-31-131 · PX-1775-131 · +29 more
  8. O-RING NSN 5331-00-265-1078 P/N S2155 · 7866-127 · GS570EM127 · 60-P-31-127 · +29 more
  9. O-RING NSN 5331-00-260-9338 P/N GS570EM227 · 7866-227 · T0591 · PX1775-227 · +29 more
  10. O-RING NSN 5331-00-251-9373 P/N 11612011 · 61488 · 340-7866 · 7866-340 · +29 more
  11. O-RING NSN 5331-00-251-9369 P/N 36-1696ITEM15 · 7866-236 · 7866-235 · 123-235-5 · +29 more
  12. O-RING NSN 5331-00-248-3848 P/N 7866-018 · 2601730-22 · 031640 · 018-C-69 · +29 more
  13. O-RING NSN 5331-00-198-6199 P/N 7374936 · 7351368 · 909-17 · 102192R1 · +29 more
  14. O-RING NSN 5331-00-197-9582 P/N D27856 · P27856 · 27856 · 546884 · +29 more
  15. O-RING NSN 5331-00-166-1109 P/N 212-17009 · 39821274 · 501-7055651 ITEM F-24 · 593-6961200 PC · +29 more
  16. O-RING NSN 5331-00-165-1967 P/N 17107A252-17107A · 803-7106793-6-OA-1-124 · 803-7106793-5-OA-1-124 · 645001RR252 · +29 more
  17. O-RING NSN 5331-01-246-3902 P/N 546867 · PRP909-9 · 287-1005-9 · 287-1005-9 · +28 more
  18. O-RING NSN 5331-01-107-4956 P/N M83461/1-006 · 58-007-21 · 29KP518 · 845-7108571-ASSEMBLY-C ITEM 33 · +28 more
  19. O-RING NSN 5331-00-882-5029 P/N C1C502 ITEM 13 · PRP568-263-4067-70 · MS28775-263 · RE0267383 · +28 more
  20. O-RING NSN 5331-00-537-3929 P/N 649-393-138-0 · J221P138 · 649-393-138-0 · AS3209-138 · +28 more
  21. O-RING NSN 5331-00-531-2924 P/N GS570EM263 · 7866-263 · 60-P-31-263 · H554-1RBPC131 · +28 more
  22. O-RING NSN 5331-00-291-9220 P/N 3N91PC735 · 3N67ALT5PC735 · 3N50PC735 · AD2335-3 · +28 more
  23. O-RING NSN 5331-00-291-7342 P/N 7866-224 · 640830-12 · MS29513-224 · 5130-534046-224 · +28 more
  24. O-RING NSN 5331-00-291-7340 P/N 225-7866 · PRP225-7866 · 7866-225 · TX90927-15 · +28 more

Ranked by how many manufacturer cross-references are on file. Every item is quote-only — the federal record carries no price and no stock, and Atlas publishes neither. Browsing stops at page 500 of this class — past that, search by number. Send a whole list →

Questions about O-Ring

What does federal supply class 5331 cover?

Federal supply class 5331 covers O-rings, the round-section sealing rings used in grooves to seal fluid and gas connections. Every item filed here is an O-ring.

How is a part in federal supply class 5331 identified?

Because every item in the class has the same item name, the NSN is what tells one O-ring from another. Each NSN record carries the characteristics on file for that exact ring and the part numbers cross-referenced to it, so a buyer can work from an MS or AS number, a manufacturer number, or a drawing callout. Each item in the class has its own National Stock Number (NSN) record, listed above.

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