How to Install
Step 1: Unscrew the bolt.
Step 2: Face the concave side of the gasket upwards.
Note: The gasket has been installed properly in advance. When using the foam gun, if there is leakage from the connection, please unscrew the bolt to check if the gasket is installed correctly. If not, take out the gasket and install again with its concave side facing up; then screw the bolt. If the gasket is correctly installed, the bottle wont move when shaken. Otherwise, it will be unstable and shaky.