DUROMETER

An instrument for measuring the hardness of rubber or other viscoelastic materials. Often the term “durometer” refers not to the instrument, but to the reading produced by the instrument. The durometer hardness for press rollers is typically between 45 and 60 on durometer scale (A) which goes from 0 to 100. Roller hardness is a crucial consideration in offset printing as it has a significant effect on print quality and press performance.