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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 5331-01-204-0726 P/N M83461/1-002 · AMS-P-83461/1 · M83461/1-002 · MIL-P-83461/1 · +4 more
  2. O-RING NSN 5331-01-202-4984 P/N MS29561-034 · MS29561-034 · 2-034 N4771-70 · 58901A008034 · +4 more
  3. O-RING NSN 5331-01-201-3629 P/N 10383974 · 3175545 · 317554500 · 406611200 · +4 more
  4. O-RING NSN 5331-01-200-6297 P/N 220-11648 · PRP220-11648 · MIL-R-25988/4 · M25988/4-220 · +4 more
  5. O-RING NSN 5331-01-200-6296 P/N PRP218-11648 · 218-11648 · MIL-DTL-25988/4 · MIL-R-25988/4 · +4 more
  6. O-RING NSN 5331-01-200-6295 P/N PRP121-11648 · 121-11648 · MIL-DTL-25988/4 · MIL-R-25988/4 · +4 more
  7. O-RING NSN 5331-01-200-6294 P/N PRP217-11648 · 217-11648 · MIL-DTL-25988/4 · MIL-R-25988/4 · +4 more
  8. O-RING NSN 5331-01-200-6293 P/N PRP138-11648 · 138-11648 · M25988/4-138 · MIL-R-25988/4 · +4 more
  9. O-RING NSN 5331-01-200-3966 P/N 11625-21 · S-1774 · AS568-905 · AS568-905MILP5510 · +4 more
  10. O-RING NSN 5331-01-199-5370 P/N M83461/1-457 · AMS-P-83461/1 · M83461/1-457 · MIL-P-83461/1 · +4 more
  11. O-RING NSN 5331-01-198-8439 P/N 2HL542 · 2HL542 · 5331PL2216869 · 22617 · +4 more
  12. O-RING NSN 5331-01-194-8665 P/N PRP137-11648 · 137-11648 · M25988/4-137 · MIL-R-25988/4 · +4 more
  13. O-RING NSN 5331-01-194-8662 P/N 119-11648 · PRP119-11648 · MIL-DTL-25988/4 · MIL-R-25988/4 · +4 more
  14. O-RING NSN 5331-01-193-2175 P/N ES9625-12 · M25988/3-213 · MIL-R-25988/3 · MIL-DTL-25988/3 · +4 more
  15. O-RING NSN 5331-01-192-6623 P/N PRP166-3238 · 5607-80-166 · NAS1611-166 · NAS1611 · +4 more
  16. O-RING NSN 5331-01-192-4020 P/N AS3209-222 CP · 2640-674X1PC19 · M83248/2-222 · 2640-74X1PC19CP · +4 more
  17. O-RING NSN 5331-01-191-8814 P/N 12312058 · F-9188-733 · 12312058 · F-9188-733 · +4 more
  18. O-RING NSN 5331-01-191-6065 P/N 205282 · CBU1271 · J706704 · J706704 · +4 more
  19. O-RING NSN 5331-01-190-2221 P/N W-302B-A30 ITEM 64 · AS568-203 MIL-R-83248/2 · AS3581-203 · M83248/2-203 · +4 more
  20. O-RING NSN 5331-01-190-0297 P/N 019-7399 · PRP019-7799 · 019-7799 · AS568-019MIL-P-5510 · +4 more
  21. O-RING NSN 5331-01-187-9078 P/N 143-19357 · PRP143-19357 · AS3209-143 · Z00.N7423510009TBM · +4 more
  22. O-RING NSN 5331-01-186-6873 P/N M83461/1-229 · AMS-P-83461/1 · M83461/1-229 · MIL-P-83461/1 · +4 more
  23. O-RING NSN 5331-01-185-2590 P/N M83461/1-233 · AMS-P-83461/1 · M83461/1-233 · MIL-P-83461/1 · +4 more
  24. O-RING NSN 5331-01-185-2580 P/N M83461/1-145 · AMS-P-83461/1 · M83461/1-145 · MIL-P-83461/1 · +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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