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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 5331-00-928-9740 P/N AS568-211/AMS3656E · AS568-211AMS3651 · 2-211N674-70 · AS568-211 · +2 more
  2. O-RING NSN 5331-00-928-9480 P/N 4M424A10PC9 · 4M424A10PC9 · 5331PL1279970 · ARP566-910 MIL-G-21610 · +2 more
  3. O-RING NSN 5331-00-926-0056 P/N AS3209-029 · 5331PL0140368 · AS3209-029 · ST3001-029 · +2 more
  4. O-RING NSN 5331-00-925-7836 P/N S8057AK164 · S8057AK164 · S8057AK164 · S8057AK164 · +2 more
  5. O-RING NSN 5331-00-925-7828 P/N S8057AK120 · S8057AK120 · S8057AK120 · S8057AK120 · +2 more
  6. O-RING NSN 5331-00-924-7760 P/N AS3551-020 · 5331PL1279959 · MS9241-020 · AS3551 · +2 more
  7. O-RING NSN 5331-00-924-7757 P/N AS3551-024 · MS9241-024 · 101754 · 5330009247757 · +2 more
  8. O-RING NSN 5331-00-923-4220 P/N AS3582-042 · MS9068-042 · 2-042 S604-70 · 2-042 S604-70 · +2 more
  9. O-RING NSN 5331-00-922-5189 P/N AS3209-009 · 5331PL0845023 · AS3209-009 · Z00.N7423510029 · +2 more
  10. O-RING NSN 5331-00-922-4960 P/N AS568-275 · AMS-P-5516 · 2-275N602-70 · AMS-P-5516 · +2 more
  11. O-RING NSN 5331-00-915-6397 P/N ARP568-246 · LFT-359 · ARP568-246 · 5594PC12-31N · +2 more
  12. O-RING NSN 5331-00-914-3320 P/N 8M4990 · 8M4990 · 8M4990 · 2-312 S1224-70 · +2 more
  13. O-RING NSN 5331-00-913-1172 P/N AS568-0066865-68 · P2004-3PC68 · ARP568-006IDSA6865 · 006-283 · +2 more
  14. O-RING NSN 5331-00-912-8880 P/N 287-6008P132 · 287-6008P132 · 287-6008P132 · 3-4L449-6 · +2 more
  15. O-RING NSN 5331-00-912-5066 P/N PRP568-168-4024-25 · AS3578-168 · MS9021-168 · 2-168 N506-65 · +2 more
  16. O-RING NSN 5331-00-911-8235 P/N NAS1613 · NAS1611-224 · AS568-224 2AA815A13F17EA14 · 2-224E515-80 · +2 more
  17. O-RING NSN 5331-00-905-2261 P/N 69494R126 · 69494R126 · 69494R126 · 5331PL0975216 · +2 more
  18. O-RING NSN 5331-00-903-3946 P/N AS568-017 · ASTM-D2000-05-03A · 2-017N163-70 · 2-017N163-7 · +2 more
  19. O-RING NSN 5331-00-903-1504 P/N PRP568-239-4024-65 · AS3578-239 · MS9021-239 · 2-239-N506-65 · +2 more
  20. O-RING NSN 5331-00-902-8340 P/N AS3582-159 · MS9068-159 · 1PS16 · 2-159 S604-70 · +2 more
  21. O-RING NSN 5331-00-897-6342 P/N D25656N4 PIECE 11 · A26223 · E26141N-2 PIECE 11 · MILP25732 20.970IDX0.275 IN. · +2 more
  22. O-RING NSN 5331-00-895-0405 P/N 19-35P225 · 35P225 · 218S313 · 2707 · +2 more
  23. O-RING NSN 5331-00-892-4220 P/N AS568B-450 · 32-8053 · 701-D-7783 PC-9 · 108342-36 · +2 more
  24. O-RING NSN 5331-00-892-1655 P/N 11-265-7806-70 · MILG22050 · MIL-DTL-22050 · 2-265 B612-7 · +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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