Cherne larger-sized I-Series line of test plugsCherne Industries added larger test plug sizes within its I-Series line of Test-Ball, Muni-Ball and Air-Loc pipe plugs. The new plugs are available as large as 24 to 48 inches. Manufactured robotically, each plug’s natural rubber core is mechanically bonded to its aluminum end plate, ensuring precision and consistency while eliminating failures that can result from chemical-bonding processes. In addition, I-Series plugs feature corrosion-resistant aluminum base plates with laser-etched identifiers, replacing the use of raised rubber markings that eventually wear away with usage. The plugs are lightweight, short and flexible, while offering back pressure
