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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 5331-00-995-4367 P/N 3-356-8-01-101-01 · MILG21610TYPE1 · 5331PL1386606 · 853-7527 · +3 more
  2. O-RING NSN 5331-00-995-2736 P/N PRP568-336-4024-65 · AS3578-336 · MS9021-336 · N0506 2-336 · +3 more
  3. O-RING NSN 5331-00-992-8569 P/N 112-8307 · PRP112-8307 · R67500-6 · 10501843 · +3 more
  4. O-RING NSN 5331-00-990-8300 P/N PRP568-322-4024-65 · AS3578-332 · MS9021-332 · 2-332 N506-65 · +3 more
  5. O-RING NSN 5331-00-990-4143 P/N AS3582-230 · MS9068-230 · 2-230 S604-70 · 10163344 · +3 more
  6. O-RING NSN 5331-00-984-5763 P/N PRP568-131-4024-65 · AS3578-131 · MS9021-131 · 2-131 N506-65 · +3 more
  7. O-RING NSN 5331-00-983-9363 P/N AS568-904 · MIL-G-21569 · 3-904N674-7 · C004-4 · +3 more
  8. O-RING NSN 5331-00-983-7787 P/N 018-711-70 · 114HS441-4 · 11-018-7474-70 · 2-18PS1-30-5 · +3 more
  9. O-RING NSN 5331-00-980-9060 P/N 143216 · 7-861782 · 571965 · 1E4504 · +3 more
  10. O-RING NSN 5331-00-978-7915 P/N 3-12L449-6 · C008-12 · 3-912 L946-60 · S9412-562 · +3 more
  11. O-RING NSN 5331-00-972-8204 P/N 0R25T · 145395 · 9178787 · 0R25T · +3 more
  12. O-RING NSN 5331-00-965-0770 P/N E2008PC24 · 005-0258-51 · PRP568-143-4024-25 · AS3578-143 · +3 more
  13. O-RING NSN 5331-00-961-0343 P/N 932118-503 · SZ7695-503 · 7454940P6 · 5-157L449-6 · +3 more
  14. O-RING NSN 5331-00-958-9731 P/N 3J1206 · A139101 · 139101 · 9034130 · +3 more
  15. O-RING NSN 5331-00-955-8079 P/N 2938-1 · 29-38-1 · AUTO110340FA · 2938-1 · +3 more
  16. O-RING NSN 5331-00-955-7589 P/N PRP568-439-4024-65 · AS3578-439 · MS9021-439 · 2-439 N506-65 · +3 more
  17. O-RING NSN 5331-00-954-7081 P/N 721287 · NAS1593-219 · 2-219-77-545 · 06460P006017 · +3 more
  18. O-RING NSN 5331-00-954-7078 P/N NAS1593-226 · 597-515-1884386REVAPC16 · 77-545-104 · 034929 · +3 more
  19. O-RING NSN 5331-00-954-2740 P/N MS29561-256 · MS29561-256 · 2-256 N4771-70 · 5350009542740 · +3 more
  20. O-RING NSN 5331-00-951-1100 P/N PRP1847-115 · PRP1487-115 · 47-071-2-115 · BACG10T13 · +3 more
  21. O-RING NSN 5331-00-944-1527 P/N PRP568-165-4024-25 · AS3578-165 · MS9021-165 · 2-165 N506-65 · +3 more
  22. O-RING NSN 5331-00-944-1526 P/N PRP568-164-4024-25 · AS3578-164 · 5331PL1326038 · MS9021-164 · +3 more
  23. O-RING NSN 5331-00-942-8450 P/N AS3582-333 · MS9068-333 · 2-333S604-70 · ARP568-33-S9 · +3 more
  24. O-RING NSN 5331-00-942-4442 P/N NAS1613 · NAS1611-220 · 440967-23 · 4904239 · +3 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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