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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 5331-01-199-5374 P/N AMS-P-83461/1 · M83461/1-459 · MIL-P-83461/1 · M83461/1-459 · +3 more
  2. O-RING NSN 5331-01-198-5490 P/N 31440038 · AS568-910 · ASTM 2000 GR 2AA910A133EA14F17 · 3-910E652-90 · +3 more
  3. O-RING NSN 5331-01-194-6105 P/N 6J-2245 · 10076287 · 3N2293 · 6J-2245 · +3 more
  4. O-RING NSN 5331-01-192-8642 P/N 249-7377 · MS28775-249 · MIL-P-25732 · 2640-901X6 PIECE 23 · +3 more
  5. O-RING NSN 5331-01-192-8641 P/N MS28775-242 · MIL-P-25732 · 5331PL0977401 · 2640-901X6 PIECE 21 · +3 more
  6. O-RING NSN 5331-01-189-7515 P/N 1F-5889-S-19 · 1C-2631-S-19 · MS29513-228 · MS29513-228 · +3 more
  7. O-RING NSN 5331-01-189-7514 P/N 1F-4179,PC.S-71 · 1F-5889-S-71 · MS29513-041 · MS29513-041 · +3 more
  8. O-RING NSN 5331-01-189-6522 P/N AS28775-239 · AS28775 · MIL-P-25732 · MS28775-239 · +3 more
  9. O-RING NSN 5331-01-185-2592 P/N AMS-P-83461/1 · M83461/1-247 · M83461/1-247 · MIL-P-83461/1 · +3 more
  10. O-RING NSN 5331-01-185-2588 P/N M83461/1-240 · AMS-P-83461/1 · M83461/1-240 · MIL-P-83461/1 · +3 more
  11. O-RING NSN 5331-01-185-2577 P/N M83461/1-140 · AMS-P-83461/1 · MIL-P-83461/1 · M83461/1-140 · +3 more
  12. O-RING NSN 5331-01-183-4059 P/N MS28775-361 · 2A11-C-M361 · MS28775-361 · MS28775-361 · +3 more
  13. O-RING NSN 5331-01-183-1502 P/N MS28775-0011 · MS28775-0011 · MS28775-001CP · MS28775-0011CP · +3 more
  14. O-RING NSN 5331-01-183-0986 P/N AMS-P-83461/1 · M83461/1-448 · MIL-P-83461 · M83461/1-448 · +3 more
  15. O-RING NSN 5331-01-179-0599 P/N MS29513-390 · AS568-390 MIL-P-5315 · MS29513-390 · 2-390 N602-70 · +3 more
  16. O-RING NSN 5331-01-179-0253 P/N M83461/1-451 · AMS-P-83461/1 · M83461/1-451 · MIL-P-83461/1 · +3 more
  17. O-RING NSN 5331-01-177-9769 P/N AS3581-252 · M83248/2-252 · MIL-R-83248/2 · 5330PL1326295 · +3 more
  18. O-RING NSN 5331-01-176-5901 P/N NAS1601-246 · NAS1611-246 · NAS1601 · NAS1611-246 · +3 more
  19. O-RING NSN 5331-01-176-2014 P/N NAS1613 · NAS1611 · NAS1611-153 · AS568-153NAS1613 · +3 more
  20. O-RING NSN 5331-01-172-4648 P/N 0099970945 · 0099970945 · 0099970945 · 445-9568 · +3 more
  21. O-RING NSN 5331-01-171-4704 P/N 0089973545 · 0089973545 · 92503-991 · 92503-991 · +3 more
  22. O-RING NSN 5331-01-171-4700 P/N 0069979948 · 0069979948 · 472-9368 · 4536226-612 · +3 more
  23. O-RING NSN 5331-01-170-9111 P/N 12630-017 · AS568-017 · AS568-017ZZ-R-765CL2BGR80 · A-A-595882B80 · +3 more
  24. O-RING NSN 5331-01-170-7251 P/N NAP840 PC 16 · P248E · MS28775-113 · MS28775-113 · +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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