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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 5331-01-273-4551 P/N MS28775-395 · MS28775-395 · MS28775-395 · 2-395N304-75 · +2 more
  2. O-RING NSN 5331-01-273-1002 P/N MS28778-8 · MS28778-8 · 5331PL0976966 · 722-2021-000PC65 · +2 more
  3. O-RING NSN 5331-01-273-1000 P/N MS28775-243 · MS28775-243 · SAE-AS28775 · MS28775-243 · +2 more
  4. O-RING NSN 5331-01-272-5269 P/N 44428 · 44428 · 710018-09 · 711033-038 · +2 more
  5. O-RING NSN 5331-01-272-1124 P/N 5330PL0825851 · CBU1332 · 3910260 · 02/910067 · +2 more
  6. O-RING NSN 5331-01-271-8670 P/N C-4613 PC14 · 4564115,FG · C-4613 PC14 · C-4613/004115 · +2 more
  7. O-RING NSN 5331-01-271-8403 P/N 5006652 · MIL-DTL-25988/1 · MIL-R-25988 · M25988/1-382 · +2 more
  8. O-RING NSN 5331-01-271-5785 P/N SK226 · 202-729 · 100347-9000-057 · 102-729-0059 · +2 more
  9. O-RING NSN 5331-01-271-5187 P/N 12.840ID0.139W COMP 3238 · 5893840-908 · 5893840 · 5893840-908 · +2 more
  10. O-RING NSN 5331-01-271-2294 P/N NMP-1128 PC27-0.25X0.5 · MS29513-013 · MS29513-013 · MS29513-013 · +2 more
  11. O-RING NSN 5331-01-270-1267 P/N MIL-P-87175/1 · M87175/1-022 · A-022SR253-70 · M87175/1-22 · +2 more
  12. O-RING NSN 5331-01-270-0754 P/N 501-6293893 IT.9 · M22050-2-236 · MIL-DTL-22050 · AS568-236 · +2 more
  13. O-RING NSN 5331-01-269-8580 P/N 2034370 · 4MB653 · 2034370 · FF9446-14 · +2 more
  14. O-RING NSN 5331-01-269-6149 P/N 28904-12 · 28904-12 · 28904-12 · 28904-12 · +2 more
  15. O-RING NSN 5331-01-268-0166 P/N M87175/1-024 · MIL-P-87175/1 · A-024SR253-70 · M87175/1-24 · +2 more
  16. O-RING NSN 5331-01-265-8990 P/N 215-4497905 PIECE 59 · AS568C-908 · AS568 · AS568 · +2 more
  17. O-RING NSN 5331-01-264-5926 P/N SS800-273 · SS800-271 · SS800-271 · SS800-271 · +2 more
  18. O-RING NSN 5331-01-264-3618 P/N 01-435-0078-5 PIECE 70 · 73156-225 · 2-225N525-60 · 2-225-N525-60BLK · +2 more
  19. O-RING NSN 5331-01-263-5991 P/N MS28775-252 · MS28775-252 · MS28775-252 · SAE-AS28775 · +2 more
  20. O-RING NSN 5331-01-263-4348 P/N 7255-243 PART 36 · 7255-243 PIECE 36 · AS568B-130 · 501 4458633 PART 36 · +2 more
  21. O-RING NSN 5331-01-262-2372 P/N 330031490 · 10339439 · 3042759 · 3042759 · +2 more
  22. O-RING NSN 5331-01-259-7012 P/N 0771C0027-2 · 0771C0027-2 · 0771C0027-2 · 0771C0027-2 · +2 more
  23. O-RING NSN 5331-01-259-6535 P/N 4074T92P01 · 4074T92P01 · 4074T92-01 · 4074T92P01 · +2 more
  24. O-RING NSN 5331-01-259-1243 P/N 117-3077 · 914-17-3077 · PRP117-3077 · H467C0001 ITEM 62 · +2 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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