A tube of silicone is around $3, I purchased gaskets last week for my dc2, $70 for the pair. Silicone will not leave any permanent damage/markings or anything. It will peel off leaving nothing behind at all. Its designed to keep water out between plastic and metal, I use it all the time at work, most of your houses will be covered with it and im pretty sure they arent full of water. If you are on a budget and enjoy diy, this is a great solution. Everybody bagging the op has probably never held a tool in their life