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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 5331-00-127-7444 P/N AMS7267 · MS9386-042 · MS9386-042 · SAE-AS9386 · +2 more
  2. O-RING NSN 5331-00-127-2522 P/N NAS1613 · NAS1611-210A · NAS1611-210 · E20018J001-9 · +2 more
  3. O-RING NSN 5331-00-126-9374 P/N BS.236 · 0D24748 · 0D24748 · 5-026MP901 · +2 more
  4. O-RING NSN 5331-00-124-9789 P/N 3-04N168-8 · LS4634-4 · STSPK300-04 · 3-04N168-8 · +2 more
  5. O-RING NSN 5331-00-124-9218 P/N MC10179 · 2-015 L308-80 · L0308 2-015 · 2-015L308-8 · +2 more
  6. O-RING NSN 5331-00-122-7220 P/N AS568-370 · 2-370N674-70 · 2-370-N674-70 · 2-370N674-70 · +2 more
  7. O-RING NSN 5331-00-119-6418 P/N J228P126 · J228P126 · 10159849 · J228P126 · +2 more
  8. O-RING NSN 5331-00-118-6559 P/N 23KP320 · 5331001186559 · 4F9029 · 4F9029 · +2 more
  9. O-RING NSN 5331-00-118-6494 P/N 907638 · MS29513-041 · 2661058B041 · MS29513-041 · +2 more
  10. O-RING NSN 5331-00-115-6571 P/N J221P022 · J221P022 · J221P022 · R149P22J · +2 more
  11. O-RING NSN 5331-00-112-1371 P/N MS29561-140 · AS29561-140 · MS29561-140 · 2-140 47-071 · +2 more
  12. O-RING NSN 5331-00-111-3755 P/N AS568B-235 · ARP568-235N398-7 · N0398 2-235 · 2-235N398-7 · +2 more
  13. O-RING NSN 5331-00-105-8653 P/N R56815 · AS3582-142 · MS9068-142 · 2-142 S604-70 · +2 more
  14. O-RING NSN 5331-00-104-7959 P/N KB16209 · 6864665 · AMS7271 · KB16209 · +2 more
  15. O-RING NSN 5331-00-104-7628 P/N 2-022L308-8 · 2-022 L1007-80 · 2-022 L308-80 · 2-022L308-8 · +2 more
  16. O-RING NSN 5331-00-103-9789 P/N AS568-131 IDSA9250 · ARP568-131IDSA9250 · J200AW131 · 4400891-1310 · +2 more
  17. O-RING NSN 5331-00-103-9786 P/N 912-12-7188 · ARP568-912MILS6855CL2GR80 · J201AC12 · 4410181-9120 · +2 more
  18. O-RING NSN 5331-00-103-2934 P/N 458-3128 · NAS1611-450 · 2-450 E515-80 · 2-450E515-8 · +2 more
  19. O-RING NSN 5331-00-103-1842 P/N AS3209-281 · ST3001-281 · A72126 · AS3209-281 · +2 more
  20. O-RING NSN 5331-00-102-4596 P/N AMS-P-5513 · AS568-144 · ARP568-144MILP5516CLA · AMS-P-5513 · +2 more
  21. O-RING NSN 5331-00-102-3107 P/N AS568-016 · ASTM D2000 · AS568B · 4189T73P01 · +2 more
  22. O-RING NSN 5331-00-101-9873 P/N 590862 · 590862 · 590862 · 590862 · +2 more
  23. O-RING NSN 5331-00-099-8502 P/N 32-11297 · 232-1355 · 114820 · 32-120-52 · +2 more
  24. O-RING NSN 5331-00-099-7890 P/N 568-028-823-70 · 932124-028 · 654371-28 · 2-028B612-70 · +2 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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