One of the major benefits of mechanical plugs over pneumatic plugs is mechanical plugs can be used in long - term applications. Unlike pneumatic plugs, which can lose air pressure over time, mechanical plugs do not use air pressure, resulting in a more secure seal.
· Made of heavy-duty aluminium
· Neoprene “O” ring (chemical resistant)
· Sizes 6" - 12" sized for concrete, clay, and SDR 26 & 35 pipe
· Sizes 15" & 18" sized for concrete & clay pipe sizes only