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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 5331-00-882-8051 P/N AS3551-021 · 5331PL1866540 · MS9241-021 · 1557052-19 · +3 more
  2. O-RING NSN 5331-00-878-0507 P/N N90-84325 · AS568-220MILP25732 · AS568-220MILP5516CLA · MS28775-220 · +3 more
  3. O-RING NSN 5331-00-877-4972 P/N 10519 · 4048596-3 · 4048596 · 4048596 · +3 more
  4. O-RING NSN 5331-00-874-2910 P/N 5D3-03709-15 · 0.070 X 0.040 70BN · 5-051 N674-70 · 7686-10927-002 · +3 more
  5. O-RING NSN 5331-00-864-7185 P/N 385960 · MS9388-115 · MS9388-115 · MS9388-115ES · +3 more
  6. O-RING NSN 5331-00-857-7175 P/N AS3551-116 · AS3551-116 · MS9241-116 · 2-116-N116-7 · +3 more
  7. O-RING NSN 5331-00-851-8694 P/N PRP568-144-4024-25 · AS3578-144 · MS9021-144 · 2-144 N506-65 · +3 more
  8. O-RING NSN 5331-00-850-6869 P/N 4564015 · ARP 015 · ARP568A-015 · ARP568-015 · +3 more
  9. O-RING NSN 5331-00-850-0486 P/N 11-345 · BACP11L-345 · BACP11L345 · APR-568-345 · +3 more
  10. O-RING NSN 5331-00-847-7268 P/N 2-226N183-9 · 200110NPC197 · 200110NPC197 · 200110NPC197 · +3 more
  11. O-RING NSN 5331-00-847-1715 P/N PRP568-26-4024 · AS3578-004 · MS9021-004 · 2-004 N506-65 · +3 more
  12. O-RING NSN 5331-00-846-1589 P/N AS3551-252 · 5331PL1013220 · MS9241-252 · MS9241-252 · +3 more
  13. O-RING NSN 5331-00-846-0505 P/N AS3551-122 · 5331PL0805689 · MS9241-122 · MS9241-122 · +3 more
  14. O-RING NSN 5331-00-846-0501 P/N AS3551-118 · 5331PL0805662 · MS9241-118 · 789835 · +3 more
  15. O-RING NSN 5331-00-845-9565 P/N S8990-143 · S8990-143 · S8990-143 · S8990-143 · +3 more
  16. O-RING NSN 5331-00-845-9561 P/N 58990-563 · S8990-563 · 58990-563 · S8990-563 · +3 more
  17. O-RING NSN 5331-00-845-3612 P/N PRP568-150-4024-25 · AS3578-150 · MS9021-150 · 2-150 N506-65 · +3 more
  18. O-RING NSN 5331-00-840-6410 P/N 69490B133 · AS3582-133 · MS9068-133 · 2-133 S604-70 · +3 more
  19. O-RING NSN 5331-00-839-4940 P/N BACP11L264 · 2-264N756-75 · ARP568-264 · PRP2118-264 · +3 more
  20. O-RING NSN 5331-00-837-9477 P/N PRP568-045-4024-65 · AS3578-045 · MS9021-045 · 2-045 N506-65 · +3 more
  21. O-RING NSN 5331-00-832-8616 P/N 2434734 · 2434734 · 745-292438N · 745-292438 · +3 more
  22. O-RING NSN 5331-00-829-0528 P/N PRP568-161-4024-25 · AS3578-161 · MS9021-161 · 5330008290528 · +3 more
  23. O-RING NSN 5331-00-827-4961 P/N MS29561-118 · GRC513-118S1353 · MS29561-118 · MS29561-118 · +3 more
  24. O-RING NSN 5331-00-826-7751 P/N PRP568-268-4024-65 · AS3578-268 · MS9021-268 · 2-268 N506-65 · +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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