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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 5331-01-353-1877 P/N M83461/1-365 · AMS-P-83461/1 · M83461/1-365 · MIL-P-83461/1-365 · +3 more
  2. O-RING NSN 5331-01-353-0356 P/N MS29561-035 · MS29561-035 · MS29561-035 · 58901A008035 · +3 more
  3. O-RING NSN 5331-01-352-8154 P/N AS29513-472 · MS29513-472 · MS29513-472 · 000991047-017 · +3 more
  4. O-RING NSN 5331-01-352-4426 P/N M83461/1-357 · AMS-P-83461/1 · M83461/1-357 · MIL-P-83461/1 · +3 more
  5. O-RING NSN 5331-01-352-4425 P/N AMS-P-83461/1 · M83461/1-363 · MIL-P-83461/1 · M83461/1-363 · +3 more
  6. O-RING NSN 5331-01-352-1088 P/N 5P-7814 · 4KK310 · 4KK310 · 10084243 · +3 more
  7. O-RING NSN 5331-01-351-2739 P/N 8C-5230 · 7HB473 · 7HB473 · 10076639 · +3 more
  8. O-RING NSN 5331-01-350-4580 P/N AMS-R-83285GR80/AS568-904 · MIL-R-83285GR80/AS568-904 · MIL-R-83285 · MIL-R-83285/AS568-904 · +3 more
  9. O-RING NSN 5331-01-350-4373 P/N H71686-8-1 · US71686 ITEM 8-1 · H47958 · US71686 ITEM 8-1 · +3 more
  10. O-RING NSN 5331-01-350-3176 P/N 21303 FIND 49 · AS3209-114CP · MIL-R-83248/1 · M83248/1-114CP · +3 more
  11. O-RING NSN 5331-01-350-3175 P/N AS3209-028CP · MIL-R-83248/1-028 · M83248/1-028CP · M83248/2-028CP · +3 more
  12. O-RING NSN 5331-01-349-8918 P/N M83485/1-208 · AMC-R-83485 · M83485/1-208 · MIL-R-83485 · +3 more
  13. O-RING NSN 5331-01-347-3720 P/N 2152 2115-803 · 21522115-803 · 2152 2115-803 · 2152 2115-803 · +3 more
  14. O-RING NSN 5331-01-346-6178 P/N MS9967-009 · AS9967 · MS9967-009 · MS9967-009 · +3 more
  15. O-RING NSN 5331-01-344-4226 P/N 5331PL0826351 · 3037537 · 330031985 · 10363812 · +3 more
  16. O-RING NSN 5331-01-343-2651 P/N 90-1600-00400 ITEM 4 · 9680598 · 9680598 · M406003 · +3 more
  17. O-RING NSN 5331-01-341-6766 P/N AMS-P-83461/1 · M83461/1-388 · M83461/1-388 · MIL-P-83461/1 · +3 more
  18. O-RING NSN 5331-01-340-8219 P/N 4.47 X 1.78/-0 8 · B 2575.107.005 · 938900542U01 · 2-008V909-90 · +3 more
  19. O-RING NSN 5331-01-340-5561 P/N 2000 97 089/5 · 1-2006-002 FIND 5 · PDFR80-4GR22B5/5 · 2000 97 089/5 · +3 more
  20. O-RING NSN 5331-01-338-6853 P/N 211031621 · 801-6404589 FIND 11 · MIL-R-83248/2 · M83248/2-431 · +3 more
  21. O-RING NSN 5331-01-334-5606 P/N MIL-R-83248/1 · M83248/1-270 · MS9388-270 · M83248/1-270 · +3 more
  22. O-RING NSN 5331-01-326-9506 P/N S9412-019 · M25988/2-019 · MIL-DTL-25988/2 · MIL-R-25988/2 · +3 more
  23. O-RING NSN 5331-01-326-9282 P/N 2-449E515-8 · NAS1611-449A · NAS1613 · NAS1611-449 · +3 more
  24. O-RING NSN 5331-01-326-9279 P/N M83461/1-456 · AMS-P-83461/1 · MIL-P-83461/1 · M83461/1-456 · +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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