Boss Pickler© Silicone Valve
Platinum Silicone one way check valve for lacto-fermenting jars. Fits 5/8" hole in Primal Pickler and Boss Pickler jars. Durable and easy to use. This valves allows oxygen to escape by expanding the silicone dome enough to open the slit in the top. Any pressure outside the jar will simply seal the slit tighter and prevent any oxygen outside the jar from entering. Works the same as a water filled air-lock with much less hassle. Can be moved directly to cold storage with no extra steps.