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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 5331-01-277-6591 P/N AS3085-140 · 2-140 V747-75 · 2-140 V747-75 · V0747 2-140 · +1 more
  2. O-RING NSN 5331-01-277-6589 P/N AS3085-154 · 2-154 V747-75 · 2-154 V747-75 · V0747 2-154 · +1 more
  3. O-RING NSN 5331-01-277-6588 P/N AS3085-121 · 2-121 V747-75 · V0747 2-121 · 2-121 V747-75 · +1 more
  4. O-RING NSN 5331-01-277-6586 P/N AS3085-133 · 2-133V747-75 · 2-133 V747-75 · 2-133 V747-75 · +1 more
  5. O-RING NSN 5331-01-277-6584 P/N ASE085-116 · 2-116 V747-75 · V0747 2-116 · 2-116 V747-75 · +1 more
  6. O-RING NSN 5331-01-277-6582 P/N AS3085-171 · 2-171 V747-75 · V0747 2-171 · 2-171 V747-75 · +1 more
  7. O-RING NSN 5331-01-277-6581 P/N AS3085-044 · 2-044 V747-75 · V0747 2-044 · 2-044 V747-75 · +1 more
  8. O-RING NSN 5331-01-276-6705 P/N MS9967-041 · MS9967-041 · SAE-AS9967 · MS9967-041 · +1 more
  9. O-RING NSN 5331-01-275-5947 P/N A50632-2 · A1-82200 ITEM 6 · W2T433606 · 50632-002 · +1 more
  10. O-RING NSN 5331-01-275-1861 P/N 20A11CM008 · 8940B · 8940B · 8940B · +1 more
  11. O-RING NSN 5331-01-275-1546 P/N AS568-006 · MIL-R-83248/2 · AS3581-006 · SAE-AS3581 · +1 more
  12. O-RING NSN 5331-01-274-7134 P/N 937 052 · 937 052 C1 · BM-042-C70 · AS568-BM-042 C70 · +1 more
  13. O-RING NSN 5331-01-274-5686 P/N MS28775-250 · MIL-P-25732 · MS28775-250 · SAE-AS28775 · +1 more
  14. O-RING NSN 5331-01-273-6275 P/N 5893841-944 · 5893841-944 · 5-944N674-70 · 5893841-944 · +1 more
  15. O-RING NSN 5331-01-273-4550 P/N MS9967-028 · MS9967-028 · AS9967-028 · SAE-AS9967 · +1 more
  16. O-RING NSN 5331-01-272-9880 P/N 941325C1 · 1105150C1 · 941 325 C1 · 1105150C1 · +1 more
  17. O-RING NSN 5331-01-272-8336 P/N 4648147 · 2-136 N256-85 · 2-136 N1090-85 · 2-136N1090-85 · +1 more
  18. O-RING NSN 5331-01-272-1125 P/N 5331PL0823069 · CBU1686 · 3523958 · 3523958 · +1 more
  19. O-RING NSN 5331-01-272-1121 P/N 3934575 · 3930993 · 393503200 · 3935032 · +1 more
  20. O-RING NSN 5331-01-272-1114 P/N 3180988-9 · 2-173C1124-90 · 2-173C1124-70 · 2-173C1124-70 · +1 more
  21. O-RING NSN 5331-01-272-0392 P/N S2L226 · 5331PL1684005 · S2L-226 · S2L226 · +1 more
  22. O-RING NSN 5331-01-271-9607 P/N M25988/2-123 · MIL-DTL-25988/2A · 20ES123-06 · C100-123060 · +1 more
  23. O-RING NSN 5331-01-271-8404 P/N 5008267 · MIL-DTL-25988/2 · M25988/2-225 · MIL-R-25988/2 · +1 more
  24. O-RING NSN 5331-01-271-8299 P/N 412-0030 · 27-894 · 27-894 · 412-0030 · +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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