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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 5331-00-419-3333 P/N 111-8307 · 10502112 · GENGP2 · 21598 · +4 more
  2. O-RING NSN 5331-00-419-0828 P/N NAS1611-023 · NAS1613 · 73326-11J · 537531-23 · +4 more
  3. O-RING NSN 5331-00-419-0784 P/N 2-019E515-80 · 73326-10A · 5331PL1257533 · 2-019-E515-80 · +4 more
  4. O-RING NSN 5331-00-418-2149 P/N N219-1-051-070-70DUR · N219-1-051-070-70DUR · N219-1-051-070-70DUR · N219-1-051-070-70DUR · +4 more
  5. O-RING NSN 5331-00-414-2811 P/N MS9967-235 · 5331PL1739411 · 5331PL0844979 · MS9967-235 · +4 more
  6. O-RING NSN 5331-00-410-4887 P/N MS29513-033 · MS29513-033 · 2661058B033 · MS29513-033 · +4 more
  7. O-RING NSN 5331-00-409-3237 P/N 030-11646 · B63115-30 · AS568-030 · C007-30 · +4 more
  8. O-RING NSN 5331-00-406-0842 P/N AS9386-121 · MS9386-121 · 5331PL1774213 · 5331PL0844940 · +4 more
  9. O-RING NSN 5331-00-405-2517 P/N 877943-00 · 5-052 · 5-052N219-70 · 052N219-7 · +4 more
  10. O-RING NSN 5331-00-405-2514 P/N MBEU140626 · 5-142 · 5-142N219-70 · N0674 5-142 · +4 more
  11. O-RING NSN 5331-00-403-6418 P/N 95002-242 · ASTM D2000 · AS568-242 · 95002-242 · +4 more
  12. O-RING NSN 5331-00-400-3366 P/N J228P014 · J228P014 · 5331PL2178614 · J228P014 · +4 more
  13. O-RING NSN 5331-00-395-1673 P/N BACP11L329 · BACP11L329 · 2118-329 · BACP11L329 · +4 more
  14. O-RING NSN 5331-00-364-9882 P/N 4384539 PIECE 5 · 810-4384539-51 · 637-203-2144041 PIECE 22 · 810-4384539PC51 · +4 more
  15. O-RING NSN 5331-00-343-1737 P/N S9413-572 · S9413-572 · S9413-572 · AS3209-572 · +4 more
  16. O-RING NSN 5331-00-341-9379 P/N AS568-157 · ASTM D2000 · 505-0008-2157 · D0573351 · +4 more
  17. O-RING NSN 5331-00-338-1327 P/N AMS7259D · AS3581-331 · MILR83248 · M83248/2-331 · +4 more
  18. O-RING NSN 5331-00-326-4718 P/N MIL-DTL-25988/1 · M25988/1-217 · MILR25988 · 328539-217 · +4 more
  19. O-RING NSN 5331-00-321-9962 P/N AS3582-340 · 10683-3 · MS9068-340 · MIL · +4 more
  20. O-RING NSN 5331-00-316-6505 P/N 579316 · 579316 · MIL-R-2598813 · M25988/3-004 · +4 more
  21. O-RING NSN 5331-00-298-9956 P/N 203424 · 203424 · 203424 · AMS-P-5315 · +4 more
  22. O-RING NSN 5331-00-297-9981 P/N AS3570-231 · AN123891 · 105891 · 105891 · +4 more
  23. O-RING NSN 5331-00-297-6532 P/N 575-4805-1442913REVAPC20 · 598-2091892005REVAPC23 · 575-0103-1443626REVBPC56 · 571-4805-1303258REVAPC2 · +4 more
  24. O-RING NSN 5331-00-297-4951 P/N 5X563 · 2015774 · 45-68787 · 5X563 · +4 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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