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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 5331-00-599-0523 P/N AS3570-238 · AN123898 · AMS7274-238ES · 2-238N180-70 · +5 more
  2. O-RING NSN 5331-00-593-8970 P/N 114-17107 · NAS1593-114 · 2-114 V747-75 · V0747 2-114 · +5 more
  3. O-RING NSN 5331-00-585-9473 P/N PRP568-276-4024-65 · AS3578-276 · 5331PL0811468 · MS9021-276 · +5 more
  4. O-RING NSN 5331-00-585-5958 P/N 711-70 · 133-711-70 · 914-33 · 5331PL1279506 · +5 more
  5. O-RING NSN 5331-00-585-3646 P/N 546835 · MS28775-438 · AN6227PC65 · AN6227B65 · +5 more
  6. O-RING NSN 5331-00-585-3217 P/N 69890-123 · PRP568-005-4024-65 · AS3578-005 · MS9021-005 · +5 more
  7. O-RING NSN 5331-00-585-3204 P/N 68-216 · 68-216 · 68-216 · 50-300010-51 · +5 more
  8. O-RING NSN 5331-00-585-1307 P/N 6803PC24 · P723-002 · BJ4554-21SA4PC36 · 204-1416793PC24 · +5 more
  9. O-RING NSN 5331-00-585-1067 P/N 90B82 · MS29561-325 · 5331PL1185379 · MS29561-325 · +5 more
  10. O-RING NSN 5331-00-585-0871 P/N AS3569-111 · AN123964 · 20309C · AN123964 · +5 more
  11. O-RING NSN 5331-00-585-0398 P/N 318S20 · PRP568-242-4024-65 · 218952 · AS3578-242 · +5 more
  12. O-RING NSN 5331-00-584-1979 P/N 2R450PC35 · 2R482REVALINE7 · 2R464REVALINE7 · 2R460PC35 · +5 more
  13. O-RING NSN 5331-00-584-1978 P/N 2R464REVALINE3 · 2R484PC21 · 0327-68 · 2R482REVALINE3 · +5 more
  14. O-RING NSN 5331-00-584-1583 P/N 182499 · PRP568-137-4024-65 · AS3578-137 · MS9021-137 · +5 more
  15. O-RING NSN 5331-00-584-1581 P/N 182391 · 69890-145 · PRP568-129-4024-65 · AS3578-129 · +5 more
  16. O-RING NSN 5331-00-584-1226 P/N 182390 · PRP568-128-4024-65 · AS3578-128 · MS9021-128 · +5 more
  17. O-RING NSN 5331-00-584-1044 P/N 182388 · PRP568-125-4024-65 · AS3578-125 · MS9021-125 · +5 more
  18. O-RING NSN 5331-00-582-7477 P/N H-5478753PC28 · PRP568-211-4024-65 · AS3578-211 · MS9021-211 · +5 more
  19. O-RING NSN 5331-00-580-9767 P/N 287-1166P153 · PRP568-266-4024-65 · AS3578-266 · MS9021-266 · +5 more
  20. O-RING NSN 5331-00-580-2479 P/N 1820-8439-70 · FS5701 · FS5701-1820-3 · FS5000-3 · +5 more
  21. O-RING NSN 5331-00-579-7191 P/N MS28775-339 · 13207E7124FN10 · MS28775-339 · 10053868 · +5 more
  22. O-RING NSN 5331-00-579-6349 P/N B1085 · 30 · 120RCLASS1SIZE0V21 · 5-37-6 · +5 more
  23. O-RING NSN 5331-00-561-0273 P/N D1037 · AS568-161 · MIL-G-21569 · 161-B46-70 · +5 more
  24. O-RING NSN 5331-00-556-7877 P/N AS568-143/D2000-05 · 2-143N674-70 · 0561C0031-29 · 2-143 N674-70 · +5 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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