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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 5331-00-291-3290 P/N J-3268396 PIECE 5 · AS3570-220 · AN123880 · 167A294-30 · +6 more
  2. O-RING NSN 5331-00-291-3281 P/N AS3570-011 · AN123861 · 91-52526-00 · AN123861 · +6 more
  3. O-RING NSN 5331-00-291-2375 P/N 8351854 · PRP909-25 · 6764780 · 172MDN1 · +6 more
  4. O-RING NSN 5331-00-290-9390 P/N 36010 · 36010 · 5430-41 · AS3570-263 · +6 more
  5. O-RING NSN 5331-00-290-8828 P/N PRP902-8 · 51C2045CHANGE3ITEM1 · AS568-110 · AMS3209 · +6 more
  6. O-RING NSN 5331-00-288-1953 P/N MA280025-44 · MILR25988 · M25988/1-239 · MIL-DTL-25988/1 · +6 more
  7. O-RING NSN 5331-00-285-9863 P/N H9152B · H9152F · NS2037PC266 · H9152A · +6 more
  8. O-RING NSN 5331-00-285-9785 P/N 82-342 · AN123997 · AS3569-237 · AN123997 · +6 more
  9. O-RING NSN 5331-00-274-7837 P/N AMS7267 · MS9386-228 · AS9386-228 · MS9386-228 · +6 more
  10. O-RING NSN 5331-00-263-8006 P/N MS29513-264 · MILP5315 · 5331PL1216050 · MS29513-264 · +6 more
  11. O-RING NSN 5331-00-263-7927 P/N 317S11 · 69890-11 · 317S11 · 69890-11 · +6 more
  12. O-RING NSN 5331-00-255-5318 P/N SAE AS568B-210 · ASTM M2AA810A13EA14F17 · 538111 · 2-210E540-8 · +6 more
  13. O-RING NSN 5331-00-251-9378 P/N 4567P11 · 346-2167 · AS29513-346 · MS29513-346 · +6 more
  14. O-RING NSN 5331-00-250-1219 P/N AS3570-223 · AN123883 · 956391 · 956391 · +6 more
  15. O-RING NSN 5331-00-242-6632 P/N 1820-27 · 82-334 · AN123982 · AS3569-222 · +6 more
  16. O-RING NSN 5331-00-241-1073 P/N 2-036S595-5 · PRP568-036-1235-50 · AS568-036 · AMS3302 · +6 more
  17. O-RING NSN 5331-00-240-4062 P/N S8990-598 · S8990-598 · S8990-598 · S8990-598 · +6 more
  18. O-RING NSN 5331-00-240-1955 P/N AP24548 · AS3570-230 · AN123890 · 2-230 N180-70 · +6 more
  19. O-RING NSN 5331-00-235-1675 P/N GS1946-1-1 · GS1946-1-1 · AN6230B37 · AN6230B37 · +6 more
  20. O-RING NSN 5331-00-231-7701 P/N M25988/2-904 · S9412-554 · MIL-R-25988/2 · M25988/2-904 · +6 more
  21. O-RING NSN 5331-00-223-2882 P/N 13168PC92 · 429559PC15 · 5331PL0787464 · PD5330-217-25 · +6 more
  22. O-RING NSN 5331-00-222-1869 P/N 026-11737 · PRP026-11737 · MS9386-026 · A-026TH1167 · +6 more
  23. O-RING NSN 5331-00-222-1685 P/N S8990-583 · MS9385-08 · 5331PL0654967 · MS9385-08 · +6 more
  24. O-RING NSN 5331-00-220-2519 P/N PRP020-11737 · 020-11737 · MS9386-020 · A-020TH1167 · +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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