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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 5331-00-440-4909 P/N GA 100113 · GA10D113 · GA100113 · GA100113 · +1 more
  2. O-RING NSN 5331-00-439-4867 P/N NAS1613 · NAS1611-043A · NAS1611-043 · 2-043E-540-80 · +1 more
  3. O-RING NSN 5331-00-437-5261 P/N AS3582-121 · MS9068-121 · 2-121 S604-70 · AS3582-121 · +1 more
  4. O-RING NSN 5331-00-435-9014 P/N 501-4321247PC2 · ARP568-453IDSA6 865-68 · SSN593-501-1863 224REVC · 00045300ML · +1 more
  5. O-RING NSN 5331-00-435-0446 P/N AS568B-914 · E20018J001-29 · 3-14E540-8 · 3-14E515-8 · +1 more
  6. O-RING NSN 5331-00-434-1413 P/N 3TM291 · 3TM291 · 10076093 · 2-357N951-75 · +1 more
  7. O-RING NSN 5331-00-433-9214 P/N MS9386-152 · MS9386-152 · MS9386-152ES · MS9386-152 · +1 more
  8. O-RING NSN 5331-00-433-3776 P/N 710668-1 · AS568-040 · 216-01348-1 · 2-040C147-7 · +1 more
  9. O-RING NSN 5331-00-431-8876 P/N AS3551-249 · 5331PL1733538 · MS9241-249 · AS3551-249 · +1 more
  10. O-RING NSN 5331-00-431-7276 P/N AS3582-158 · MS9068-158 · 2-158S604-70 · SAE-AS3582 · +1 more
  11. O-RING NSN 5331-00-429-3702 P/N 10-0602 · 10-0602 · 1JA3368J88 · 2-030 E540-80 · +1 more
  12. O-RING NSN 5331-00-425-9243 P/N ST1050-016 · AMS7276G · AS3209-016 · SAE-AMS7276 · +1 more
  13. O-RING NSN 5331-00-425-4713 P/N 2-121 · 52700-2 · 2-121 · 2-121S383-70 · +1 more
  14. O-RING NSN 5331-00-425-3247 P/N 25192 · 2-174 · 2-174N219-7 · 2-174N674-70 · +1 more
  15. O-RING NSN 5331-00-425-2784 P/N AS568-928MILP25732 · AS568-928MILP25732 · MS28775-928 · SAE-AS28775 · +1 more
  16. O-RING NSN 5331-00-425-2771 P/N AS568-110MILG21610TY1 · ARP568-110MILG2 1610TY1 · 613-8213 · 613-8213 · +1 more
  17. O-RING NSN 5331-00-425-0291 P/N AS568-244MILR6855CL2TYAGR80 · 233989PC67 · 4400181-2440 · ARP568-244MILR6 855 · +1 more
  18. O-RING NSN 5331-00-423-4243 P/N 639AS6696-1 · 2-009 B318-70 · B318 2-009 · 2-009B318-70 · +1 more
  19. O-RING NSN 5331-00-421-9431 P/N S9412-231 · S9412-231 · MIL-DTL-25988/2 · M25988/2-231 · +1 more
  20. O-RING NSN 5331-00-420-9660 P/N NAS1611-213 · NAS1613 · E20018J001-20 · 500000-0018-005 2 · +1 more
  21. O-RING NSN 5331-00-420-7591 P/N MS28775-152 · MS28775-152 · MS28775-152 · MS28775-152 · +1 more
  22. O-RING NSN 5331-00-420-1450 P/N MS9386-004 · MS9386-004 · 9513-004-4 · MS9386-004 · +1 more
  23. O-RING NSN 5331-00-419-0553 P/N S9412-115 · MIL-R-25988/2115 · 5331PL0963878 · S9412-115 · +1 more
  24. O-RING NSN 5331-00-419-0354 P/N AMS-P-5516 · MILP5516 · 2-015PS1-30-5 · 2-015PS1-30-5 · +1 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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