The end of a PPR pipe is sealed off using a PPR end plug, a type of plastic fitting. Its purpose is to establish a reliable seal that will not allow any liquids to seep out of the pipe's end, such as water.
PPR end plugs are normally created using the same thermoplastic known as polypropylene random copolymer that is used to create PPR pipes. This material is perfect for use in plumbing systems since it is strong, long-lasting, and resistant to corrosion and chemicals.
PPR end plugs are available in a range of sizes to accommodate various PPR pipe diameters. Typically, they are installed by simply putting the plug into the PPR pipe's end and tightening it with a tool until is secure