Mason jar lids (3-pack)

Unique aluminum lids for wide mouth Mason jars with MOAV (mother of all valves) to control oxygen level by vacuuming or nitrogen gas injection.


  • BPA-free and rust-free aluminum and silicone
  • silicone band for good grip & good look
  • keeping food fresh longer by vacuuming* or nitrogen gas injection
  • perfect for storing hops, coffee, cannabis, medicine...
  • built-in airlock for in-jar lacto-fermentation of veggies or sauerkraut

Comes in 3-pack

* compatible with our vacuum pump or most wine pumps when used with our patented "pump shoe" (available here). Not suitable for canning.

designed/patented in US & made in China