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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 5331-01-333-2692 P/N CM1-117-B46A · 01-435-0401-4 ITEM 0083 · 120-11000PC46 · 01-435-0401-4 ITEM 0083 · +1 more
  2. O-RING NSN 5331-01-332-7117 P/N 6227-75 · 103,520 ITEM 41 · E101286 PC NO 41 · 6227-75 · +1 more
  3. O-RING NSN 5331-01-331-5373 P/N MS9955-013 · MS9955-013 · MS9955-013 · MS9955-013 · +1 more
  4. O-RING NSN 5331-01-331-0494 P/N AS3582-452 · MS9068-452 · 2-452S604-70 · AS3582-452 · +1 more
  5. O-RING NSN 5331-01-330-9614 P/N JN13746 · 703370A · 703370A · 703370A · +1 more
  6. O-RING NSN 5331-01-330-7133 P/N 001740T · Q4336 · AIR-336 · 3601600 · +1 more
  7. O-RING NSN 5331-01-330-7132 P/N T77932 · 666016-C67 · T77932 · T77932 · +1 more
  8. O-RING NSN 5331-01-330-2367 P/N 0490042695 · T77857 · 666014-C67 · T77857 · +1 more
  9. O-RING NSN 5331-01-328-1994 P/N NAS1611-014 · NAS1611-014CP · NAS1613 · NAS1601-014 · +1 more
  10. O-RING NSN 5331-01-326-9512 P/N M25988/2-134 · MIL-R-25988/2 · MIL-DTL-25988/2 · S9412-134 · +1 more
  11. O-RING NSN 5331-01-326-9511 P/N MIL-DTL-25988/2 · M25988/2-133 · MIL-R-25988/2 · S9412-133 · +1 more
  12. O-RING NSN 5331-01-326-9509 P/N M25988/2-121 · MIL-DTL-25988/2 · MIL-R-25988/2 · S9412-121 · +1 more
  13. O-RING NSN 5331-01-326-9508 P/N MIL-DTL-25988/2 · MIL-R-25988/2 · M25988/2-025 · S9412-025 · +1 more
  14. O-RING NSN 5331-01-326-4945 P/N MS9967-258 · MS9967-258 · MS9967-258 · AS9967-258 · +1 more
  15. O-RING NSN 5331-01-326-4944 P/N 30-78101189 · 100-538-1590 · 30-781-1189 · 100-538-1590 · +1 more
  16. O-RING NSN 5331-01-325-5242 P/N AS29561-336 · MS29561-336 · AS29561-336 · SAE-AS29561 · +1 more
  17. O-RING NSN 5331-01-325-3459 P/N NAS1611-220 · 2-220E515-80 · NAS1611-220 · NAS1611-220 · +1 more
  18. O-RING NSN 5331-01-325-1347 P/N SV792310 FIND 6 · NAS1611-037 · NAS1611-037 · SV792310 FIND 6CP · +1 more
  19. O-RING NSN 5331-01-325-1346 P/N SV792310 FIND 5 · NAS1611-152 · NAS1611-152 · SV792310 FIND 5CP · +1 more
  20. O-RING NSN 5331-01-325-1345 P/N MS9967-273 · MS9967-273 · AS9967-273 · MS9967-273 · +1 more
  21. O-RING NSN 5331-01-324-8832 P/N 2500405 · 8673B · 8673B · 2500405 · +1 more
  22. O-RING NSN 5331-01-324-8281 P/N 15522434 · 15687225 · 88891734 · 15687225 · +1 more
  23. O-RING NSN 5331-01-324-8279 P/N 103338-32570 · 5331PL0807252 · DF01-302-4 · 103338-32570 · +1 more
  24. O-RING NSN 5331-01-324-8278 P/N AS43013-046 · AS43013-046 · AS43013-046 · AS43013-046 · +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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