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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.

Filter

53,078 items

  1. O-RING NSN 5331-01-540-3617 P/N ST1946-902 · 7T0565-902 · 7T0566-902 · 7T0565-902 · +1 more
  2. O-RING NSN 5331-01-540-3611 P/N ST1946-225 · 7T0565-225 · 7T0566-225 · 7T0565-225 · +1 more
  3. O-RING NSN 5331-01-540-3608 P/N ST1946-153 · 7T0565-153 · 7T0566-153 · ST1946-153 · +1 more
  4. O-RING NSN 5331-01-540-3602 P/N 7T0565-906 · ST1946-906 · 7T0566-906 · 7T0565-906 · +1 more
  5. O-RING NSN 5331-01-540-1791 P/N 7T0565-130 · ST1946-130 · 7T0566-130 · ST1946-130 · +1 more
  6. O-RING NSN 5331-01-540-0697 P/N 7T0565-911 · ST1946-911 · 7T0566-911 · 7T0565-911 · +1 more
  7. O-RING NSN 5331-01-540-0692 P/N ST1946-141 · 7T0565-141 · 7T0566-141 · 7T0565-141 · +1 more
  8. O-RING NSN 5331-01-540-0690 P/N ST1946-129 · 7T0565-129 · 7T0566-129 · 7T0565-129 · +1 more
  9. O-RING NSN 5331-01-540-0687 P/N ST1946-138 · 7T0565-138 · 7T0566-138 · ST1946-138 · +1 more
  10. O-RING NSN 5331-01-540-0686 P/N ST1946-123 · 7T0565-123 · 7T0566-123 · 7T0565-123 · +1 more
  11. O-RING NSN 5331-01-537-6888 P/N 04416620 436 · MS28778-214 · 04416620 436 · 04416620 436 · +1 more
  12. O-RING NSN 5331-01-536-9830 P/N 23KP488 · 23KP488 · 50028658 · 10354968 · +1 more
  13. O-RING NSN 5331-01-536-6215 P/N 12KP653 · 12KP653 · 10076356 · 50028659 · +1 more
  14. O-RING NSN 5331-01-534-4289 P/N 10KP314 · 10KP314 · 10099835 · 50028712 · +1 more
  15. O-RING NSN 5331-01-534-4285 P/N 17KP302 · 17KP302 · 50028713 · 10099836 · +1 more
  16. O-RING NSN 5331-01-532-9573 P/N 2173705/1 · 2173705/1 · 2173705/1 · 2173705/1 · +1 more
  17. O-RING NSN 5331-01-532-9555 P/N 2177742/1 · 2177742/1 · 2177742/1 · 2177742/1 · +1 more
  18. O-RING NSN 5331-01-532-9545 P/N 2178483/0 · 2178483/0 · 2178483/0 · 2178483/0 · +1 more
  19. O-RING NSN 5331-01-532-9232 P/N 2172412-1 · 2172412/1 · 2172412/1 · 2172412/1 · +1 more
  20. O-RING NSN 5331-01-528-1727 P/N 150-7732 · 150-7732 · 150-7732 · 2T-2695 · +1 more
  21. O-RING NSN 5331-01-527-8817 P/N 10076242 · 254-2270 · 254-2270 · 254-2270 · +1 more
  22. O-RING NSN 5331-01-527-7570 P/N 10076261 · 225-7739 · 225-7739 · 225-7739 · +1 more
  23. O-RING NSN 5331-01-527-3389 P/N 803-7504748-20811X-03 · M83461/1-272 · M83461/1-272 · M83461/1-272 · +1 more
  24. O-RING NSN 5331-01-526-1832 P/N 10440929 · 199-9267 · 199-9267 · 199-9267 · +1 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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