PVC Sealing Inflatable Test Air Bag 4" (100mm) or 6" (150mm) Drain Pipe Bung
PVC Inflatable Drain Pipe Bung. Available Sizes: 4" (100mm) or 6"(150mm). (Both sizes available with hand pump). To create an air tight seal in pipes for a back pressure of 4"/100mm U Gauge, as requested by British Standards.