Can I use my Westcott eraser on high-temperature materials?

Pencil erasers should not be used on any surface above 100 degrees Fahrenheit. 

There are several different materials used to make pencil sharpers, such as synthetic rubber, soft plastic and many more. Using these materials on high-temperature surfaces will cause the physical condition of the eraser to change (become brittle, or hard,) or it will begin to melt.