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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 5331-00-892-1651 P/N 11-258-7806-70 · 2-258B1167-70 · B1167 2-258 · 2-258 B612-7 · +2 more
  2. O-RING NSN 5331-00-890-3738 P/N 97255-236PC27 · AS568-158MIL-G-22050 GR1 · AS568 · M22050-1-158 · +2 more
  3. O-RING NSN 5331-00-890-3411 P/N NAS1611-212 · NAS1613 · 2-212 E515-80 · 00296 · +2 more
  4. O-RING NSN 5331-00-884-0940 P/N AS29561 · MS29561-347 · MS29561-347 · MS29561-347 · +2 more
  5. O-RING NSN 5331-00-884-0079 P/N 379644 · MS9388-112 · MS9388-112 · MS9388-112 · +2 more
  6. O-RING NSN 5331-00-882-9172 P/N 367444 · MS9388-012 · MS9388-012 · 5331008829172 · +2 more
  7. O-RING NSN 5331-00-882-9118 P/N 6843333-019 · 385951 · MS9388-019 · N7425068019 · +2 more
  8. O-RING NSN 5331-00-882-9102 P/N 388064 · MS9388-011 · M83248/1-011 · M83248-1-011 · +2 more
  9. O-RING NSN 5331-00-882-8050 P/N 6735231-117 · AS3551-117 · MS9241-117 · MS29561-117 · +2 more
  10. O-RING NSN 5331-00-882-1681 P/N 371339 · 371339 · MS9388-010 · MS9388-010ES · +2 more
  11. O-RING NSN 5331-00-882-1679 P/N 363217 · 363217 · MS9387-08 · MS9387-08 · +2 more
  12. O-RING NSN 5331-00-878-9111 P/N 2-24-77-545 · NAS1593-024 · MILR25897 · F330-10-01-03 · +2 more
  13. O-RING NSN 5331-00-874-7863 P/N 2-217E515-8 · SP151-22 · 54-66-7217 · PRP568-217 · +2 more
  14. O-RING NSN 5331-00-874-3755 P/N 20008 ITEM 21 · 68-671 · 5-321N674-70 · 5-321N304-7 · +2 more
  15. O-RING NSN 5331-00-869-3918 P/N PRP568-222-1902-60 · PRP568-222-1133-60 · AS568-222 · MIL-P-25988 TY1CL1GR60 · +2 more
  16. O-RING NSN 5331-00-865-4442 P/N 385970 · MS9388-211 · MS17413-211 · 8552-956 · +2 more
  17. O-RING NSN 5331-00-864-7206 P/N 143-16207 · 400922 · MS9388-143 · MS9388-143ES · +2 more
  18. O-RING NSN 5331-00-863-5549 P/N 5F149 · 5F149 · 5F149 · 8T7196 · +2 more
  19. O-RING NSN 5331-00-855-8059 P/N 10076195 · 8C3085 · 19-004-1753 · 4J-5477 · +2 more
  20. O-RING NSN 5331-00-855-2017 P/N 6864647 · AS568-109 · KB16206 · AS568-109 · +2 more
  21. O-RING NSN 5331-00-855-1228 P/N A-010TH1217 · ARP568-010ZZR765CLASS2AGRADE70 · AS113-23-010 · 22-525-5SI · +2 more
  22. O-RING NSN 5331-00-855-0531 P/N S8990-113 · S8990-113 · S8990-113 · S8990-113 · +2 more
  23. O-RING NSN 5331-00-853-2376 P/N 26965 · 11329 · 4050417 · 4050417 · +2 more
  24. O-RING NSN 5331-00-852-4230 P/N AS3551-015 · 5331PL0143896 · MS9241-015 · MS29561-015 · +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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