Personal experiences with the name Kiel: | Edit. My boyfriends name is Kiel pronounced Kyle because it is the name and spelling of a town in Germany that is a twin town to the one we live in Coventry.
A flapper is a rubber mechanism in your toilet tank that is the moving part of the flush valve, sealing water into the tank and allowing water to exit the tank when you flush. Flappers deteriorate over time as a result of in-tank cleaning products and chemicals used by utilities.
The solution is to drain the tank and bowl, check and clean the flapper seat, and replace the flapper if it's worn or damaged. If you hear a sustained hissing sound coming from your toilet, it's probably a result of water trickling into the tank via the supply line. In this case the parts to check are the float, the refill tube and the ballcock or inlet-valve assembly.