This thin-walled sleeve 0,25 mm 0.01 in., is simply pushed in position over the worn area, providing a counter face surface that is optimized for radial shaft seals. There is no shaft disassembly or machining involved and costly downtime is minimized. Since the same sized seal as the original can be used, there is no need to search for other seals, or keep a stock of different sizes. No special equipment is required since the installation tool is supplied with the sleeve. A mallet and a pair of pliers are all that is needed for the installation.