Pressure-Relief Airlocks


Vent carbon dioxide and other gases out of your container without letting dust, oxygen, and other contaminants in. Fill these airlocks with water or a sanitizing solution and they form a liquid seal. They’re often used in fermentation, such as beer and wine making, as well as other jobs where chemical reactions or temperature changes produce gas inside your container. A cap blocks out dust even as it vents the gas.
Push these airlocks into flasks, carboys, and other containers that have a rubber stopper with a hole. The airlocks come apart in three pieces for easy and thorough cleaning—no need for specially shaped brushes to reach every crevice.
Overall | Stem | Body | |||||||||||
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Connection Style | Diameter | Height | Diameter | Height | Maximum Pressure | Maximum Temperature, °F | Shape | Cap Material | Material | Clarity | For Use With | Each | |
Push On | 1 1/8" | 4 5/8" | 1/2" | 1 9/16" | Not Rated | 140° | Straight | Polyethylene Plastic | Polystyrene Plastic | Clear | Air, Beverage, Drinking Water, Hydrogen, Oxygen, Steam, Water | 0000000 | 00000 |