The grey PVC tube plug 22 mm is a sacrificial plug designed for sealing openings in formwork panels and protection tubes for form ties. Its compatibility with MidiBox and PionBox formwork panels enables quick filling of mounting holes without additional accessories. The plug effectively prevents concrete from leaking through the openings during pouring, protecting the edges of the holes from erosion and keeping the panels cleaner. After stripping, it can be easily removed by knocking it out with a hammer or using a special puller, and then disposed of as a single-use component. Once concreted, the plug also acts as a permanent cap in the wall opening, protecting it from dirt and improving the appearance of the concrete surface.