Short test pipe sealing cushion with bypass for shutting off and testing pipes during leak tests in accordance with EN 1610 with air/water or DWA-A 139 as well as oil and petrol separator tests in accordance with DIN 1999. The test sealing cushion has a bypass (open passage) into the shut-off area for connecting leak testing equipment. A pipe sealing cushion (type U/type UK) is also required to shut off the pipe on the other side. - Short and lightweight, with bypass for connecting leak testing equipment - Compressed air quick-release coupling for filling - Suitable for pipe inner diameters 150 - 200 mm - Operating pressure 2.5 bar - Made of natural rubber with fabric insert - Diameter 140 mm - Cylinder length 220 mm - Total length 270 mm - Weight 2 kg - Connection bypass 1" ET