What are your Berkey Sight Glass™ Spigots made out of?
The stopper, shell, nut, and washer for our Standard Spigots and Sight Glass Spigots are made of the following materials:
The stopper inside is “FDA grade silicone”
The shell/nut is FDA grade polypropylene.
The washers are FDA grade rubber.
The Sight Glass Spigot tubes are a buffed aluminum gauge shield with a glass insert tube. The small washers in the top and bottom of the tube to the Sight Glass Spigot are FDA grade Rubber.