The fermentation airlock is made of high quality BPA-free polypropylene and the stopper is made of food grade rubber, which is a good and helper for the fermentation food.
Brewing airlock can be used for preserving, wine making, beer brewing, fermenting sauerkraut, kimchi that can satisfy your daily fermentation need.
Simple to press the stopper onto the carboy, insert the beer airlock to the stopper, pour some water into airlock and cover the lid to complete all operations.
Brewing airlock makes easier for the fermentation caused it could effectively isolate the air to prevent oxidation and allow the whole fermentation process to be automatic fermentation and exhaust at normal temperature without manual control.
size: Stopper:17 x 23 x 26mm, Check valve:17 x 1cm
colour:clear
Material:plastic
Package Contents:
8 x Check valve
8 x stopper
