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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 5331-01-031-8254 P/N 2507294-52 · 2507294-52 · 2507294-52 · 2507294-52 · +2 more
  2. O-RING NSN 5331-01-031-8253 P/N 2507294-4 · 2507294-4 · 2507294-4 · 2507294-4 · +2 more
  3. O-RING NSN 5331-01-031-8249 P/N 2507294-71 · 2507294-71 · 2507294-71 · 2-154 N674-7 · +2 more
  4. O-RING NSN 5331-01-031-8239 P/N 2-336-N674-70 · 2507297-79 · 2507294-79 · 2-336 N674-70 · +2 more
  5. O-RING NSN 5331-01-031-8237 P/N 2507294-49 · 2507294-49 · 2507294-49 · 2507294-49 · +2 more
  6. O-RING NSN 5331-01-031-8235 P/N 2507294-75 · 2507294-75 · 2507294-75 · 2507294-75 · +2 more
  7. O-RING NSN 5331-01-031-8234 P/N 2507294-44 · 2507294-44 · 2507294-44 · 2-388 N674-7 · +2 more
  8. O-RING NSN 5331-01-031-8225 P/N 2507294-42 · 2507294-42 · 2507294-42 · 2507294-42 · +2 more
  9. O-RING NSN 5331-01-031-8221 P/N 2507294-3 · 2507294-3 · 063003004 · 2507294-3 · +2 more
  10. O-RING NSN 5331-01-031-8218 P/N 2507294-7 · 2507294-7 · 2507294-7 · 2-014 N674-7 · +2 more
  11. O-RING NSN 5331-01-031-8209 P/N 2507294-88 · 2507294-88 · 2507294-88 · 2-255 N674-7 · +2 more
  12. O-RING NSN 5331-01-031-8206 P/N 2507294-20 · 2507294-20 · 2507294-20 · 2-033 N674-7 · +2 more
  13. O-RING NSN 5331-01-031-1347 P/N 2507294-60 · 2507294-60 · 2507294-60 · 2-021 N674-7 · +2 more
  14. O-RING NSN 5331-01-031-1341 P/N 57298000 · 2507294-5 · 2507294-5 · 2-012 N674-7 · +2 more
  15. O-RING NSN 5331-01-031-1339 P/N 2507294-82 · 2507294-82 · 2-232 N0674-7 · 2507294-82 · +2 more
  16. O-RING NSN 5331-01-031-1336 P/N 2507294-15 · 2507294-15 · 2507294-15 · 2-025 N674-7 · +2 more
  17. O-RING NSN 5331-01-031-1335 P/N 2507294-17 · 2507294-17 · 2507294-17 · 2-028 N674-7 · +2 more
  18. O-RING NSN 5331-01-031-1333 P/N 2507294-6 · 2507294-6 · 2507294-6 · 2507294-6 · +2 more
  19. O-RING NSN 5331-01-031-1328 P/N 2507294-59 · 2507294-59 · 0065225.35.63 · 2507294-59 · +2 more
  20. O-RING NSN 5331-00-762-7483 P/N 21309 · S2603-19T · TF256-19T · TF256-19T · +2 more
  21. O-RING NSN 5331-00-759-2135 P/N M25988/1-109 · MIL-DTL-25988/1 · MILR25988 · 5331PL2129536 · +2 more
  22. O-RING NSN 5331-00-759-2011 P/N MIL-DTL-25988/1 · MILR25988 · M25988/1-135 · 128601 · +2 more
  23. O-RING NSN 5331-00-757-1700 P/N 35715330 · FS52987U · 35715294 · 35715330 · +2 more
  24. O-RING NSN 5331-00-755-4947 P/N NA156-216 · 11-216-7483-90 · 0924092 · 55-26-8309 · +2 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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