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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 5331-00-677-1177 P/N MS29561-028 · AS3551-028 · MS29561-028 · MS9241-028 · +3 more
  2. O-RING NSN 5331-00-663-7373 P/N 571-4801-1302170PC13 · 576-4801-1505468REVAPC13 · 571-0103-1302000REVAPC63 · 4265-235REVAPC13 · +3 more
  3. O-RING NSN 5331-00-647-0899 P/N 8351031 · HR166-282 · 2930-70 · A1716-258 · +3 more
  4. O-RING NSN 5331-00-646-7457 P/N Y671014 PC 13 · 22094 · 809585 · 22094 · +3 more
  5. O-RING NSN 5331-00-641-8283 P/N 11507 · 405 · 4369595 · 4369595 · +3 more
  6. O-RING NSN 5331-00-641-8282 P/N 12040 · 3025194 · 3025194-6 · 627 · +3 more
  7. O-RING NSN 5331-00-641-5774 P/N SP3513 · B6414-2PC49 · PRP914-13711-70 · 571-2200-1301217REVAPC6 · +3 more
  8. O-RING NSN 5331-00-625-9580 P/N 310959R1 · 310959R1 · 100051R1 · 100051R1 · +3 more
  9. O-RING NSN 5331-00-623-1120 P/N 5331PL1281979 · 2-124P648-90 · P0642 · 2-124P648-9 · +3 more
  10. O-RING NSN 5331-00-618-6020 P/N 014-11306 · 11-014 · 410003-1 · 10163316 · +3 more
  11. O-RING NSN 5331-00-618-4527 P/N SP100-137 · AS568-149 · MIL-PRF-1149 · SP100-137 · +3 more
  12. O-RING NSN 5331-00-618-3755 P/N PRP568-139-4024-65 · AS3578-139 · MS9021-139 · 2-139 N506-65 · +3 more
  13. O-RING NSN 5331-00-618-3386 P/N 4YZ913-70PC18 · VBB822B · 5ZS72-18 · 11-008 · +3 more
  14. O-RING NSN 5331-00-613-8268 P/N 910605 · PLD300950PC16 · NAS1611-237 · NAS1613 · +3 more
  15. O-RING NSN 5331-00-612-5171 P/N PRP218-8307 · 23750-29 · 5331PL0866313 · PRP218-8307 · +3 more
  16. O-RING NSN 5331-00-610-5230 P/N 5331PL0795208 · 2-32C147-7 · 739-7538PC45 · 853-7555 · +3 more
  17. O-RING NSN 5331-00-606-9839 P/N 5331PL0795202 · 2-33C147-7 · 739-7538PC44 · 853-07554-000 · +3 more
  18. O-RING NSN 5331-00-604-3368 P/N 6B214749 · 12046P11 · 624VLK00523 · 650VX5 · +3 more
  19. O-RING NSN 5331-00-601-8156 P/N W248966PC456D · 20A11XMS1024 · 20A11CMS1024 · 20A11-X-MS1024 · +3 more
  20. O-RING NSN 5331-00-599-6575 P/N 1H624 · 287-1088P21 · 5427-21 · 154020 · +3 more
  21. O-RING NSN 5331-00-599-2427 P/N 21310 · S2609-8T · ARP568-908 · A6689-908-142 · +3 more
  22. O-RING NSN 5331-00-599-2355 P/N W3712-4D · W3712-4 · HS227A15 · HS232-17-210 · +3 more
  23. O-RING NSN 5331-00-599-2027 P/N 5247821 · 5150191 · 5150191 · 5150191 · +3 more
  24. O-RING NSN 5331-00-599-0982 P/N 210300 · AMS7270-044 · AMS7270 · 2-213 · +3 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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