4 ms·

btw, they seal the vacuum in those things with lead. If shoddy workmanship is in evidence, you may want to discontinue using it.

• HeatrayEnjoyer 2y ago
  Why lead?
  • martin8412 2y ago
    They use lead pipes in the UK. Why I don't know, but I guess it's got some properties that make it ideal for keeping water where it's supposed to be.
    • throwaway22032 2y ago
      FWIW it has been illegal to use lead piping in the UK for at least 50 years now. Of course it's still in older properties.
  • x0x0 2y ago
    It's an easily workable metal, and apparently the easiest way to seal the hole made when they empty the vacuum chamber and / or produce certain welds. https://www.wired.com/story/stanley-cup-lead-soldering/ https://www.wired.com/story/stanley-cup-lead-soldering/
• onewheeltom 2y ago
  The lead plug is on the outside of the vacuum vessel and never comes in contact with the inside of the mug. Old, invalid complaint
  • x0x0 2y ago
    In real ones, maybe. In the cheapest chinese knockoffs... I wouldn't bet my health on that, and anyone who does is foolish.