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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 5331-01-545-0622 P/N 140-1.50IN ITEM 5 · ZH229C137 · 140-1.50IN ITEM 5 · 140-1.50IN ITEM 5 · +1 more
  2. O-RING NSN 5331-01-544-1693 P/N 803-6397304-XX-27 · 803-6397304 · M83461/1-009 · M83461/1-009CP · +1 more
  3. O-RING NSN 5331-01-543-1328 P/N NAS1613 · NAS1612-8A · 5331PL1878299 · NAS1612-8A · +1 more
  4. O-RING NSN 5331-01-542-0770 P/N AS29513 · AS29513-134 · AS29513-134 · AS29513 · +1 more
  5. O-RING NSN 5331-01-542-0673 P/N AS29513 · AS29513-353 · SAE-AS29513 · AS29513 · +1 more
  6. O-RING NSN 5331-01-542-0041 P/N 410-13691 · 410-13691 · 410-13691(9452K123) · AS-568A-035-70BN · +1 more
  7. O-RING NSN 5331-01-541-5882 P/N AS29513 · AS29513-237 · AS29513-237 · AS29513 · +1 more
  8. O-RING NSN 5331-01-541-5881 P/N AS29513-246 · AS29513 · SAE-AS29513 · AS29513 · +1 more
  9. O-RING NSN 5331-01-541-5875 P/N AS29513 · AS29513-267 · SAE-AS29513 · AS29513 · +1 more
  10. O-RING NSN 5331-01-541-5874 P/N AS29513 · AS29513-231 · AS29513 · AS29513-231 · +1 more
  11. O-RING NSN 5331-01-541-5873 P/N AS29561 · AS29561-011 · AS29561 · SAE-AS29561 · +1 more
  12. O-RING NSN 5331-01-541-3890 P/N 918458 · NAS1601-154 · NAS1613 · NAS1611-154A · +1 more
  13. O-RING NSN 5331-01-541-2451 P/N ST1946-148 · 7T0565-148 · 7T0566-148 · 7T0565-148 · +1 more
  14. O-RING NSN 5331-01-541-2160 P/N 10025382 · 16KP900 · 29542976 · 16KP900 · +1 more
  15. O-RING NSN 5331-01-541-1314 P/N 2CP398 · 17KP660 · 3-908 NBR · 3-908 · +1 more
  16. O-RING NSN 5331-01-540-8848 P/N 3HA547 · 3HA547 · 6602670 · OR-351-2820-744 · +1 more
  17. O-RING NSN 5331-01-540-8269 P/N 7T0565-234 · ST1946-234 · 7T0566-234 · 7T0565-234 · +1 more
  18. O-RING NSN 5331-01-540-6838 P/N T158339 · T158339 · T158339 · T158339 · +1 more
  19. O-RING NSN 5331-01-540-4490 P/N ST1946-145 · 7T0565-145 · 7T0566-145 · ST1946-145 · +1 more
  20. O-RING NSN 5331-01-540-4489 P/N ST1946-115 · 7T0565-115 · 7T0566-115 · 7T0565-115 · +1 more
  21. O-RING NSN 5331-01-540-4488 P/N ST1946-121 · 7T0565-121 · 7T0566-121 · ST1946-121 · +1 more
  22. O-RING NSN 5331-01-540-4487 P/N 7T0565-151 · ST1946-151 · 7T0566-151 · 7T0565-151 · +1 more
  23. O-RING NSN 5331-01-540-4486 P/N 7T0565-163 · ST1946-163 · 7T0566-163 · 7T0565-163 · +1 more
  24. O-RING NSN 5331-01-540-3618 P/N 7T0565-328 · ST1946-328 · 7T0566-328 · 7T0565-328 · +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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