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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 5331-00-579-3165 P/N PRP568-344-4067-70 · MS28775-344 · 5331PL1740042 · MS28775-344 · +6 more
  2. O-RING NSN 5331-00-576-8565 P/N 69890-27 · 199785 · PRP568-222-4024-65 · AS3578-222 · +6 more
  3. O-RING NSN 5331-00-576-4974 P/N 182385 · PRP568-121-4024-65 · AS3578-121 · MS9021-121 · +6 more
  4. O-RING NSN 5331-00-576-3774 P/N 19714P11 · 3279934PC13 · 710055223 · 22550-123 · +6 more
  5. O-RING NSN 5331-00-571-9549 P/N MS25988/1-007 · MIL-R-25988/1 · M25988/1-007 · MS25988/1-007 · +6 more
  6. O-RING NSN 5331-00-571-6539 P/N 8347819 · N1239-70 · 8347819 · 8347819 · +6 more
  7. O-RING NSN 5331-00-559-7520 P/N 041-11647 · PRP041-11647 · M25988/1-041 · MIL-DTL-25988/1 · +6 more
  8. O-RING NSN 5331-00-558-1326 P/N 3-903 AMS3304 · A-A-59588 · A-A59588-2A70 · AS568B-903 · +6 more
  9. O-RING NSN 5331-00-558-1103 P/N 3-20 · S8316AB20 · S8316AB20 · NAS617-20 · +6 more
  10. O-RING NSN 5331-00-558-0364 P/N 916-1487 · 5140-534001-16 · S8316K16 · S8316K16 · +6 more
  11. O-RING NSN 5331-00-553-2172 P/N 182562 · MILR25988 · MIL-DTL-25988/4 · M25988/4-015 · +6 more
  12. O-RING NSN 5331-00-551-9116 P/N 155-685 · NE11820-30 · 171000-7 · 1820-7 · +6 more
  13. O-RING NSN 5331-00-542-1422 P/N 234-1467 · 5331PL0144160 · MS29561-234 · MS29561-234 · +6 more
  14. O-RING NSN 5331-00-536-8055 P/N 45Z91D140 · 1045Z426 · A010 · 11485300 · +6 more
  15. O-RING NSN 5331-00-534-5565 P/N 7D154005 · 129784 · 25K20010 · 17VPS9 · +6 more
  16. O-RING NSN 5331-00-531-2259 P/N 69890-31 · PRP568-226-4024-65 · 209765 · AS3578-226 · +6 more
  17. O-RING NSN 5331-00-519-7667 P/N S8990-257 · S8990-257 · S8990-257 · S8990-257 · +6 more
  18. O-RING NSN 5331-00-515-6331 P/N 318S8 · PRP568-230-4024-65 · AS3578-230 · MS9021-230 · +6 more
  19. O-RING NSN 5331-00-514-4471 P/N 12-112 · 001778T · ASTM D2000 M3CH910B34E016E03 · AS568B-112 · +6 more
  20. O-RING NSN 5331-00-486-7109 P/N 3-904E540-8 · 3-904 E540-80 · 170100-904 · 990404-904ES · +6 more
  21. O-RING NSN 5331-00-481-0052 P/N RE0267430 · 10105588 · W007025000 · 2-283 N674-70 · +6 more
  22. O-RING NSN 5331-00-480-9773 P/N 99136-6 · 99136-6 · 99136-6 · 2-6S604-7 · +6 more
  23. O-RING NSN 5331-00-480-3821 P/N 82005512-005 · 82005512-005 · 82005512-005 · 82005512-005 · +6 more
  24. O-RING NSN 5331-00-470-7961 P/N 16360-310 · SF10824 ITEM 17 · C004-10 · 3-910 N674-70 · +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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