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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 5331-01-006-2123 P/N AS3209-375 · MIL-R-83248/1 · M83248/1-375 · 2-375-V747 · +6 more
  2. O-RING NSN 5331-01-006-2111 P/N AS3209-468 · AMS 7276 · M83248/1-468 · MIL-R-83248/1 · +6 more
  3. O-RING NSN 5331-01-006-2106 P/N AMS 7276 · AS3209-463 · M83248/1-463 · MIL-R-83248/1 · +6 more
  4. O-RING NSN 5331-01-006-0309 P/N AS3209-361 · MIL-R-83248/1 · M83248/1-361 · MS-28775-361 · +6 more
  5. O-RING NSN 5331-01-006-0308 P/N AS3209-320 · M83248/1-320 · MIL-R-83248/1 · M83248/5-320 · +6 more
  6. O-RING NSN 5331-01-006-0302 P/N AS3209-309 · M83248/1-309 · MIL-R-83248/1 · MIL-R-83248C TYPE 1 CLASS 1 · +6 more
  7. O-RING NSN 5331-01-005-4053 P/N 19357 · A1005796 · AS3209-449 · MILR25897TYPE1CLASS1 · +6 more
  8. O-RING NSN 5331-01-005-4051 P/N 845-7286708 ITEM 20 · AS3209-437 · MIL-R-83248/1 · M83248/1-437 · +6 more
  9. O-RING NSN 5331-01-005-4049 P/N 845-4687577 · AS568-435MIL-R83248CLASS1TYPE2 · AS3209-435 · MIL-R-83248/1 · +6 more
  10. O-RING NSN 5331-01-005-3705 P/N AS3209-311 · M83248/1-311 · MIL-R-83248/1 · 2-311 · +6 more
  11. O-RING NSN 5331-01-005-3207 P/N D4000FF ITEM 1 · D4000FF ITEM 1 · AS3209-350 · MIL-R-83248/1 · +6 more
  12. O-RING NSN 5331-01-005-2313 P/N AS3209-456 · AMS 7276 · MIL-R-83248/1 · M83248/1-456 · +6 more
  13. O-RING NSN 5331-01-005-2308 P/N 845-4687581 ITEM 36 · AS3209-445 · MIL-R-83248/1 · M83248/1-445 · +6 more
  14. O-RING NSN 5331-01-005-0527 P/N AS3209-380 · MIL-R-83248/1 · M83248/1-380 · 2-380-V884-75 · +6 more
  15. O-RING NSN 5331-01-005-0519 P/N 3798790 FIND 33 · AS3209-208 · M83248/1-208 · MIL-R-83248/1 · +6 more
  16. O-RING NSN 5331-01-004-9551 P/N AS3209-378 · AMS7276 · M83248/1-378 · MIL-R-83248/1 · +6 more
  17. O-RING NSN 5331-01-004-7982 P/N 5-194N304-75 · 5-194N756-75 · 927C529P2 · HS4878-1 · +6 more
  18. O-RING NSN 5331-01-004-7233 P/N AS568-016MILP5516-70DURM · MIL-R-83248 · V3D10076 ITEM 15 · V3D10076PC14X15 · +6 more
  19. O-RING NSN 5331-00-990-4149 P/N AS3582-232 · MS9068-232 · MS9068-232 · AS3582-232 · +6 more
  20. O-RING NSN 5331-00-989-5369 P/N MS29561-437 · AMS-R-7362 · 5331PL2340153 · MS29561-437 · +6 more
  21. O-RING NSN 5331-00-989-3001 P/N D95000-021 · 2-021N219-7 · G140-1-78X23-52 · G140-1-78X23-52 · +6 more
  22. O-RING NSN 5331-00-984-6618 P/N AMS3304G · AS3582-033 · 418048-33 · MS9068-033 · +6 more
  23. O-RING NSN 5331-00-984-3793 P/N 0905-0095 · D95000-214 · AS568-214 · 2-214N219-7 · +6 more
  24. O-RING NSN 5331-00-983-9881 P/N 2-22N219-7 · G140-1-78X25-12 · G140-1-78X25-12 · 2-022 N674-70 · +6 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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