What is an Expansion Plug?

An expansion plug is a type of pipe fitting used to seal the end of a pipe. It is also known as an end cup and helps to prevent backflow. It gets inserted into the end of a tube and then expanded with a wrench or other tool to create a seal. An Expansion plug fills the hole in a casting, manifolds, or other components to prevent the escape of fluids or gases. But how do they work? Read on to learn all about expansion plugs and how to choose the right one for your needs. How Do Expansion Plugs [...]