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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 5331-00-166-1101 P/N M83248/2-123 · SAE AS3581-123CP · AS3581-123 · MILR83248 · +10 more
  2. O-RING NSN 5331-00-162-5805 P/N OR-1-1 · PL-21323 PC 16 · 770009 · 6230 · +10 more
  3. O-RING NSN 5331-00-138-4440 P/N 2100-18 · 341644ALT2PCALL · AS3582-115 · 2-115 · +10 more
  4. O-RING NSN 5331-00-119-1643 P/N 9686P09 · S8057BG4 · AMS-R-6855 CL 2 GR 40 · AMS-R-6855A · +10 more
  5. O-RING NSN 5331-00-111-0734 P/N 11111-0-002320 · 5331PL2174759 · N2320 · 11111-0-002320 · +10 more
  6. O-RING NSN 5331-00-055-4976 P/N 7377-444 · PH8026-444 · 4067-70-444 · PRP568-444-4067-70 · +10 more
  7. O-RING NSN 5331-00-054-6890 P/N 1866-32 · 814546-32 · 1866-32 · 82022 · +10 more
  8. O-RING NSN 5331-00-054-6881 P/N 8328970 · 546881 · 909-23 · 300S23 · +10 more
  9. O-RING NSN 5331-00-053-5465 P/N 928-2347 · PRP928-2347 · L356000557 · PRP568-924-3110-70 · +10 more
  10. O-RING NSN 5331-00-013-7785 P/N 52068HPC15 · 5559922-266 · 25K40800 · AS568-266 · +10 more
  11. O-RING NSN 5331-01-361-0235 P/N 10025263 · 9HE895 · 23019664 · 9HE895 · +9 more
  12. O-RING NSN 5331-01-360-1901 P/N M83485/1-115 · AMC-R-83485 · M83485/1-115 · MIL-R-83485 · +9 more
  13. O-RING NSN 5331-01-351-4199 P/N M83461/2-903 · AMS-P-83461 · MIL-P-83461 · M83461/2-903 · +9 more
  14. O-RING NSN 5331-01-335-8012 P/N AMS-P-83461 · M83461/1-021CP · AMS-P-83461/1A · M83461/1-021 · +9 more
  15. O-RING NSN 5331-01-320-9554 P/N B01-L REFERENCE 050 · B01-L/050 · 04811-00080 · B01-L REFERENCE 050 · +9 more
  16. O-RING NSN 5331-01-318-9115 P/N 514676 · M83485/1-117 · AMS-R-83485 · AMS-R-83485/1 · +9 more
  17. O-RING NSN 5331-01-297-7195 P/N ST1946-144 · ST1946-144 · ST1946-144 · ST1946-144 · +9 more
  18. O-RING NSN 5331-01-281-3848 P/N ST1946-012 · ST1946-012 · ST1946-012 · ST1946-012 · +9 more
  19. O-RING NSN 5331-01-258-6853 P/N 08450 ITEM 124 · 085784 · 111-19359 · AS568-111 · +9 more
  20. O-RING NSN 5331-01-211-0840 P/N 2-020L308-80 · AMS-25988 · M25988/4-020 · MIL-DTL-25988/4 · +9 more
  21. O-RING NSN 5331-01-208-2920 P/N AMS7259D · AS3581-124 · M83248/2-124 · MIL-R-83248/2 · +9 more
  22. O-RING NSN 5331-01-206-8069 P/N AMS-R-25988 · M25988/4-021 · MIL-R-25988/4 · MIL-DTL-25988/4 · +9 more
  23. O-RING NSN 5331-01-200-6289 P/N M25988/4-116 · 116-11648 · PRP116-11648 · M25988/4-116 · +9 more
  24. O-RING NSN 5331-01-200-6287 P/N 111-11648 · PRP111-11648 · 182567 · M25988/4-111 · +9 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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