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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 5331-01-041-4750 P/N GS570J2G346 · EE61118 · EE61118 · 07A199-346 · +11 more
  2. O-RING NSN 5331-01-039-3075 P/N R4775 · PRP568-265-4067-70 · SS845-2007685 P · MS28775-265 · +11 more
  3. O-RING NSN 5331-01-035-2235 P/N 243-7657 · 593-6960882PC10 · 1112309 · 2-243N219-7 · +11 more
  4. O-RING NSN 5331-00-752-1413 P/N 7521413 · 7521413 · 30-0469-5 · 7521413 · +11 more
  5. O-RING NSN 5331-00-729-4655 P/N 601549-3 · PRP568-041-4024-65 · AS3578-041 · 5331PL0811442 · +11 more
  6. O-RING NSN 5331-00-724-5541 P/N 018-11307 · 018-11507 · AS3582-018 · BACP11J18 · +11 more
  7. O-RING NSN 5331-00-706-3188 P/N A395X15 · 007-25K40024 · 07-865459 · MILP5516CLASSA · +11 more
  8. O-RING NSN 5331-00-682-4743 P/N 902-142-70 · PRP902-1-142-70 · 5302-0100 · 006-902-1 · +11 more
  9. O-RING NSN 5331-00-620-5700 P/N 4563P11 · 290987R1 · 130201 · 290987R1 · +11 more
  10. O-RING NSN 5331-00-599-6454 P/N 20AG62 · 182400 · 199780 · AS3578-009 · +11 more
  11. O-RING NSN 5331-00-593-3465 P/N N03731 · 11111-0-003731 · ASTM-D2000-01 M3CH714A25B34E · AS568-039 · +11 more
  12. O-RING NSN 5331-00-585-9771 P/N 101-20800 · MS28775-004 · 5331PL1491928 · 080-04273-043 · +11 more
  13. O-RING NSN 5331-00-585-3645 P/N MS28775-337 · CVC4212-40 · 5331PL0810147 · MS28775-337 · +11 more
  14. O-RING NSN 5331-00-585-0851 P/N 9121208 · 9121208 · AS3569-213 · AN123973 · +11 more
  15. O-RING NSN 5331-00-582-7478 P/N 318S1 · 69890-28 · PRP568-223-4024-65 · 199786 · +11 more
  16. O-RING NSN 5331-00-580-5939 P/N PRP902-4-142-70 · 5140-534051-4 · S8057K4 · S8057K4 · +11 more
  17. O-RING NSN 5331-00-580-2275 P/N 182486 · 69890-12 · PRP568-114-4024-65 · 199057 · +11 more
  18. O-RING NSN 5331-00-579-7926 P/N 2CT352 · 801-6640811 PC 221-5 · 2CT352 · PRP568-435-4067-70 · +11 more
  19. O-RING NSN 5331-00-579-3161 P/N PRP346-7377 · 346-7377 · MS28775-346 · 5331PL0657034 · +11 more
  20. O-RING NSN 5331-00-579-3160 P/N 7377-427 · P48026-427 · PRP568-427-4067-70 · 4067-70-427 · +11 more
  21. O-RING NSN 5331-00-550-6753 P/N 182485 · PRP568-113-4024-65 · 199056 · AS3578-113 · +11 more
  22. O-RING NSN 5331-00-542-1729 P/N ARP568-218E515-8 · ARP568-218E518-8-218 · 2-218E515-8 · 693B1LINE11SH1 · +11 more
  23. O-RING NSN 5331-00-530-2003 P/N W246627PC456B · 20A11CM446 · AN6227B73 · AN6227B73 · +11 more
  24. O-RING NSN 5331-00-489-1012 P/N 1222180322-44 · 25K20026 · 29650WB · 29650-HA · +11 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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