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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 5331-01-492-8750 P/N 21522115-801 · 2152 2115-801 T AKR · 21522115-801 · 2152 2115-801 · +1 more
  2. O-RING NSN 5331-01-492-8006 P/N 2152 2118-957 · 21522118-957 · 21522118-957 · 2152 2118-957 TAKR 287 · +1 more
  3. O-RING NSN 5331-01-492-8005 P/N 21522118-844 · 2152 2118-844 · 21522118-844 · 2152 2118-844 TAKR 287 · +1 more
  4. O-RING NSN 5331-01-492-5678 P/N J515CH183X0089H · SAE J515CH183X0089H · J515CH183X0089H · SAE J515CH183X0089H · +1 more
  5. O-RING NSN 5331-01-491-1435 P/N 085252 · 3-908-V0894-90 · 3-908-V0894 · V0894-90 · +1 more
  6. O-RING NSN 5331-01-490-4307 P/N 77724-28/REF2-013 · 410OR0012 · 2-013 · 92163436 · +1 more
  7. O-RING NSN 5331-01-490-0804 P/N MS9386-225 · MS9386-225 · S355-70 2-225 · 2-225 S355-70 · +1 more
  8. O-RING NSN 5331-01-490-0795 P/N MS9386-229 · MS9386-229 · S355-70 2-229 · 2-229 S355-70 · +1 more
  9. O-RING NSN 5331-01-486-6485 P/N A-2728-1 REV 17 IT 24 · 203048-000 · PRP203048-000 · A-5628-0F IT 24 · +1 more
  10. O-RING NSN 5331-01-486-1736 P/N AS568-224 · MS33666-224 · 4-2604-40A · 4-2604-40A · +1 more
  11. O-RING NSN 5331-01-486-1734 P/N AS568-213 · MS33666-213 · 4-2604-20A · 4-2604-20A · +1 more
  12. O-RING NSN 5331-01-486-1733 P/N AS568-237 · MS33666-237 · 4-2604-80A · 4-2406-80A · +1 more
  13. O-RING NSN 5331-01-486-1732 P/N AS568-245 · MS33666-245 · 4-2604-100A · 4-2604-100A · +1 more
  14. O-RING NSN 5331-01-486-1731 P/N AS568-234 · MS33666-234 · 4-2406-70A · 4-2406-70A · +1 more
  15. O-RING NSN 5331-01-486-1730 P/N AS568-231 · MS33666-231 · 4-2604-63A · 4-2605-63A · +1 more
  16. O-RING NSN 5331-01-486-1727 P/N AS568-225 · MS33666-225 · 4-2604-45A · 4-2604-45A · +1 more
  17. O-RING NSN 5331-01-485-9750 P/N CV147495 · 2863702 · 3883042 · 2863702 · +1 more
  18. O-RING NSN 5331-01-485-6442 P/N ST1946-238 · M83485/1-238 · ST1946-238 · ST1946-238 · +1 more
  19. O-RING NSN 5331-01-485-6400 P/N ST1946-161 · ST1946-161 · ST1946-161 · ST1946-161 · +1 more
  20. O-RING NSN 5331-01-485-3300 P/N 7052637-14 · N141005810 · 7052637-14 · 7052637-14 · +1 more
  21. O-RING NSN 5331-01-484-2630 P/N 028-12928-000 · 364-48946-000 ITEM 68 · AS568-283 · AS568-283 NEOPR ENE-1 · +1 more
  22. O-RING NSN 5331-01-484-1871 P/N 5D410084 REV C ITEM 4 · A628003 · 5D410084 · A628003 · +1 more
  23. O-RING NSN 5331-01-484-0138 P/N 74294N1 · 75294N1 · 74525 ITEM 14 · 75294N1 · +1 more
  24. O-RING NSN 5331-01-483-5079 P/N 673268 · 10017042 · BCP8008 · BCP8008 · +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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