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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 5331-01-396-1016 P/N 803-2177917-02-32 · 2177917-02-32 · 803-2177917-02-32 · 5331PL1284830 · +1 more
  2. O-RING NSN 5331-01-395-2814 P/N OD32438 · OD28058 · OD32438 · OD32438 · +1 more
  3. O-RING NSN 5331-01-395-1278 P/N 036724 · ST036724 · 036724 · 036724 · +1 more
  4. O-RING NSN 5331-01-394-6422 P/N 90OA62P124 · D6351834 · D6362419 ITEM E6 · D6362419 ITEM E6 · +1 more
  5. O-RING NSN 5331-01-394-6420 P/N 80.421.01428.104 · D6351795 · D6351795 · 80.421.01428.104 · +1 more
  6. O-RING NSN 5331-01-394-3578 P/N 364306 · 364306R1 · 91708 · 91708 · +1 more
  7. O-RING NSN 5331-01-394-1873 P/N AS3085-015 · 2-015 V747-75 · 2-015 V747-75 · V0747 2-015 · +1 more
  8. O-RING NSN 5331-01-393-9444 P/N 4HS751 · 4HS751 · 3792343 · 3792343 · +1 more
  9. O-RING NSN 5331-01-393-9443 P/N 5HS321 · 5HS321 · 3792510 · 3792510 · +1 more
  10. O-RING NSN 5331-01-393-1328 P/N 9443135AB129 · 9443135ABP129 · 509E803BRPN12 · 9443135ABP129 · +1 more
  11. O-RING NSN 5331-01-392-6709 P/N 66117-008-020 · D631Z557A FIND 48 · D631Z558A FIND 48 · D631Z556Z FIND 48 · +1 more
  12. O-RING NSN 5331-01-392-5729 P/N D631Z558A FIND 44 · D631Z556A FIND 44 · 66117-20-20 · D631Z557A FIND 44 · +1 more
  13. O-RING NSN 5331-01-392-5029 P/N 66179-006-020 · D631Z557A FIND 31 · D631Z558A FIND 31 · D631Z556A FIND 31 · +1 more
  14. O-RING NSN 5331-01-392-5019 P/N D631Z558A FIND 47 · D631Z556A FIND 47 · D631Z557A FIND 47 · 66117-012-020 · +1 more
  15. O-RING NSN 5331-01-392-4121 P/N D631Z558A FIND 53 · D631Z557A FIND 53 · A25163-017-020 · D631Z556A FIND NO 53 · +1 more
  16. O-RING NSN 5331-01-392-2750 P/N AMS-P-83461 · M83461/1-112 · 207-1862800SH2PC24 · MIL-P-83461 · +1 more
  17. O-RING NSN 5331-01-391-3185 P/N MS28775-369 · MS28775-369 · 2-369PS130-5 · SAE-AS28775 · +1 more
  18. O-RING NSN 5331-01-391-1166 P/N AMS-P-83461/2 · MS83461/2-904 · MIL-P-83461-904 · MS83461/2-904 · +1 more
  19. O-RING NSN 5331-01-390-2895 P/N 45010956 · 45010956 · 45010956 · 47006363 SYM-16D · +1 more
  20. O-RING NSN 5331-01-390-2068 P/N MIL-P-83461/1 · MIL-P-83461/1-027 · M83461/1-027 · SAE-AS83461/1 · +1 more
  21. O-RING NSN 5331-01-389-9768 P/N 336-190-298 · 336-900-007 · 336-190-298 · DE991 · +1 more
  22. O-RING NSN 5331-01-389-7695 P/N 1177886 · 0117 7886 · 05719655 · CV191631 · +1 more
  23. O-RING NSN 5331-01-388-8523 P/N R106796 · R106796 · R106796 · R106796 · +1 more
  24. O-RING NSN 5331-01-388-3987 P/N 5331PL2332874 · AS3578-020 · MS9021D-020 · MS9021-020 · +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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