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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 5331-01-231-5206 P/N PRP-568-033-4200-70 · 568033-2 · PL-52601 PIECE 43 · PO0026NRP · +1 more
  2. O-RING NSN 5331-01-231-0692 P/N 375B009QTA · 375B009QTA · G-375-B-009 · K-1350-340 ITEM 7A · +1 more
  3. O-RING NSN 5331-01-230-7851 P/N AS29513-8 · MS29513-8 · 2-008 N602-70 · MS29513-8CP · +1 more
  4. O-RING NSN 5331-01-230-4602 P/N M22050-1-294 · MIL-DTL-22050 · 3-924E688-70 · 3-924E688-70 · +1 more
  5. O-RING NSN 5331-01-230-2450 P/N G-375-B-111-QTA · K-1350-340 ITEM 7B · G-375-B-111-QTA · K-1350-340 ITEM 7B · +1 more
  6. O-RING NSN 5331-01-230-1767 P/N MS28775-010 · MS28775-010 · SAE-AS28775 · MS28775-010 · +1 more
  7. O-RING NSN 5331-01-229-4114 P/N MS28775-326 · MS28775-326 · MS28775-326 · SAE-AS28775 · +1 more
  8. O-RING NSN 5331-01-229-2237 P/N MS28778-5 · MS28778-5 · 5330PL0828408 · MS28778-5 · +1 more
  9. O-RING NSN 5331-01-229-2236 P/N MS28775-121 · MS28775-121 · 280090-12 ITEM 66 · MS28775-121 · +1 more
  10. O-RING NSN 5331-01-228-7155 P/N 216-4384970 PC 61 · AS568-230/AMS-R-83285 GR 80 · MS33666-230 · MS33666-230 · +1 more
  11. O-RING NSN 5331-01-226-6683 P/N 324328 · 9132190570 · 9132190570 · 324328 · +1 more
  12. O-RING NSN 5331-01-225-6344 P/N 2-320 BUNA-N · 2-320N674-70 · AS568A-320 · 2-320-N674-70 · +1 more
  13. O-RING NSN 5331-01-225-5240 P/N ARP568-904 · 4564904FG · ARP 904 · 4564904EB · +1 more
  14. O-RING NSN 5331-01-225-4803 P/N 10003696 · 2CT509 · 2CT509 · BCP8004 · +1 more
  15. O-RING NSN 5331-01-225-1323 P/N 80X12 · 72572 PIECE 12 · 3266916 · 72572 PIECE 12 · +1 more
  16. O-RING NSN 5331-01-223-6769 P/N 58K-225 · 58K-225 · 58K225 · 58K000225 · +1 more
  17. O-RING NSN 5331-01-223-5509 P/N 807041-96 · DX-118087 PIECE 54A · DR124305 PIECE 54A · 807041-96 · +1 more
  18. O-RING NSN 5331-01-222-5581 P/N 82401200 · 82401200 · 82401200 · 82401200 · +1 more
  19. O-RING NSN 5331-01-222-3508 P/N M83248/1-212 · 4872093 · 283486-0001 PIECE 60 · SAE-AS83248/1 · +1 more
  20. O-RING NSN 5331-01-222-3503 P/N M83248/1-015 · 5331PL0854701 · 283486-0001 PIECE 63 · 4872093 · +1 more
  21. O-RING NSN 5331-01-222-3221 P/N 302020AP8 · 302020AP8 · 302020AJ5 · 302020AP8 · +1 more
  22. O-RING NSN 5331-01-222-3152 P/N M25988/3-035 · MIL-R-25988/3 · MIL-DTL-25988/3 · 538395-35 · +1 more
  23. O-RING NSN 5331-01-222-1638 P/N 5331PL0658505 · 2666850-11 · 2666850-11 · SOCN2666850-11 · +1 more
  24. O-RING NSN 5331-01-221-0557 P/N 12293888-3 · 12293888-3 · 12293888-3 · 2-011-5469-40 · +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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