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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 5331-01-431-3317 P/N A37-3250-006-9549325 · A37-3250-006-9549,1261 · A37-3250-006-9549 · A37-3250-006-9549 · +1 more
  2. O-RING NSN 5331-01-429-2398 P/N 21522115-877 · 4893789-801 ITEM 003 · 21522115-877 · 21522115-877 · +1 more
  3. O-RING NSN 5331-01-429-2397 P/N 4893789-801 ITEM 002 · 21522118-803 · 21522118-803 · 21522118-803 · +1 more
  4. O-RING NSN 5331-01-428-9233 P/N FG666011C67 · T77814 · T77814 · T77814 · +1 more
  5. O-RING NSN 5331-01-428-8776 P/N 133818 · 133818 · PL133800 ITEM 18 · PL133800 ITEM 18 · +1 more
  6. O-RING NSN 5331-01-428-1641 P/N S9412-024 · S9412-024 · MIL-DTL-25988/2 · M25988/2-024 · +1 more
  7. O-RING NSN 5331-01-426-7684 P/N FTC770595ABQ160-3LNW4MPC612 · ABQ160-3LNW4MPC612 · ABQ160-3LNW4MPC612 · ABQ160-3LNW4MPC612 · +1 more
  8. O-RING NSN 5331-01-425-1924 P/N 465244 · 21-10612 IT 14 · 21-10612 IT 14 · 465244 · +1 more
  9. O-RING NSN 5331-01-424-9583 P/N KK71EW223 · KK71EW223 · PL19XL5353458CR IT157 · PL19XL5353558CR IT157 · +1 more
  10. O-RING NSN 5331-01-424-9457 P/N KK71EW463 · PL19XL5353458CR IT8 · KK71EW463 · PL19XL5353558CR IT8 · +1 more
  11. O-RING NSN 5331-01-424-8839 P/N KK71EW015 · CAT19.019 IT12 · KK71EW015 · PL19XL5353458CR IT12 · +1 more
  12. O-RING NSN 5331-01-424-8831 P/N KK71EW263 · PL19XL5353558CR IT13 · CAT19.019 IT13 · PL19XL5353458CR IT13 · +1 more
  13. O-RING NSN 5331-01-424-8487 P/N MS28775-133CP · MS28775-133CP · V3D10254 ITEM 39CP · MS28775-133CP · +1 more
  14. O-RING NSN 5331-01-424-5740 P/N 211048897 · MIL-R-83248/2 · M83248/2-250 · SAE-AS83248/2 · +1 more
  15. O-RING NSN 5331-01-424-5727 P/N 1471 1.50IN ITEM 22 · 6592-M-993 · 1471 1.50IN ITEM 21 · 1471 1.50IN ITEM 22 · +1 more
  16. O-RING NSN 5331-01-424-2960 P/N 5331PL0140390 · 10117199 · 946.91.27.764 · AS3209-119 · +1 more
  17. O-RING NSN 5331-01-424-1243 P/N 467540 · 467540115/120 · 22-07168 IT 7 · 115/120467540 · +1 more
  18. O-RING NSN 5331-01-424-0069 P/N 46 4236 · 21-10611 ITEM 13 · 464236 · 46 4236 · +1 more
  19. O-RING NSN 5331-01-423-6717 P/N 9212-D110 ITEM 12 · MIL-R-83248/2 · M83248/2-371 · SAE-AS83248/2 · +1 more
  20. O-RING NSN 5331-01-423-6715 P/N AS3209-018 CP · M83248/1-018CP · V3D10370 ITEM 13CP · AS3209-018CP · +1 more
  21. O-RING NSN 5331-01-422-0028 P/N 50271000 ITEM 37 · 50271000 ITEM 37 · J51300-1001-B · 0.139 X 12.400I D BUNA 70 DURO · +1 more
  22. O-RING NSN 5331-01-421-9895 P/N 518958PC20 · 518958PC20 · 518958PC20 · 518958PC20 · +1 more
  23. O-RING NSN 5331-01-421-9888 P/N 518958PC11 · 518958PC11 · 518958PC11 · 518958PC11 · +1 more
  24. O-RING NSN 5331-01-421-9493 P/N 226125 · 13838 · 50307 · 82024 ITEM 92 · +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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