Valve seal tool for 6mm diameter valve guide. (355/360/430 & others with 6mm diameter stem)

This tool was designed to overcome the problem of correctly installing valve stem seals. The seal is simple inserted onto the tool (see reference picture below) and the tool is then inserted into the valve guide. The seal is now perfectly square to the location diameter and with a small amount of pressure on the end of the tool, the seal is installed effortlessly, without damage and right first time.