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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 5331-01-058-7105 P/N BACP11J120 · BACP11J120 · S7E183-120 · S383-70-120 · +3 more
  2. O-RING NSN 5331-01-057-3127 P/N 405411 · AS568-912 · MIL-R-3533 · 3-912N602-70 · +3 more
  3. O-RING NSN 5331-01-057-0419 P/N NAS1613 · NAS1611-025 · 820-5295960PC54F70 · 2-025E515-80 · +3 more
  4. O-RING NSN 5331-01-055-3871 P/N M25988/1-211 · MIL-DTL-25988/1 · 5331PL0658322 · A211TH1057-70 · +3 more
  5. O-RING NSN 5331-01-053-9822 P/N 568-130-E17018 · PRP568-130-5611-80 · SM-C-773504-5 · 2-130-E515-80 · +3 more
  6. O-RING NSN 5331-01-053-7650 P/N 00031695N · AS3582-046 · MS9068-046 · 00031695N · +3 more
  7. O-RING NSN 5331-01-053-7021 P/N 1894642 · 71-1504 · 1894642 · 1894643 · +3 more
  8. O-RING NSN 5331-01-053-2907 P/N 1894643 · 41SX399 · 41SX399 · 5330010532907 · +3 more
  9. O-RING NSN 5331-01-046-5403 P/N MS9967-040 · AMS7273 · MS9967-040 · MS9967-040 · +3 more
  10. O-RING NSN 5331-01-046-0623 P/N AS568B-014 · 639AS1458-014 · AS568C-014 · AS568B-014 · +3 more
  11. O-RING NSN 5331-01-043-1899 P/N F852190000A · 24263N PIECE 23 · F85219A · FENC-60A · +3 more
  12. O-RING NSN 5331-01-043-1417 P/N AS3581-389 · AMS 7259 · M83248/2-389 · M83248-2-389 · +3 more
  13. O-RING NSN 5331-01-040-3911 P/N PRP568-258-4067- · PRP568-258-4067- · PRP568-258-4067-70 · PRP568-258-4067-70 · +3 more
  14. O-RING NSN 5331-01-039-9758 P/N AS568-133 · D2000 GR 2AA815A13F17EA14 · 29656DA · 29656YA · +3 more
  15. O-RING NSN 5331-01-037-2399 P/N S8990-261 · S8990-261 · MS9386-261 · MS9386-261 · +3 more
  16. O-RING NSN 5331-01-035-0989 P/N 020-7399 · AS568-020MIL-P-5510 · MS28778-020 · 2-020 N507-90 · +3 more
  17. O-RING NSN 5331-01-031-8265 P/N 2509084 · 2-010-E0540-80 1W2B · 2-010 E515-80 · 2-010/E515-80 · +3 more
  18. O-RING NSN 5331-01-031-8263 P/N 2507294-38 · 2507294-38 · 2-233N674-70 · 2507294-38 · +3 more
  19. O-RING NSN 5331-01-031-8252 P/N 2507294-78 · 2507294-78 · 2507294-78 · 2507294-78 · +3 more
  20. O-RING NSN 5331-01-031-8233 P/N 2507294-16 · 2507294-16 · B1232-503 · 2507294-16 · +3 more
  21. O-RING NSN 5331-01-031-8227 P/N 0706340062 · 2507294-47 · 2507294-47 · 2507294-47 · +3 more
  22. O-RING NSN 5331-01-031-8216 P/N 2507294-30 · 2507294-30 · 2507294-30 · 2-048 N674-7 · +3 more
  23. O-RING NSN 5331-01-031-8215 P/N 2507294-41 · 2507294-41 · 2-275N674-70 · 2-275 N674-7 · +3 more
  24. O-RING NSN 5331-01-031-8213 P/N 2507294-57 · 2507294-57 · 2507294-57 · 2-11 N674-7 · +3 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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