becomes very hot & internal mechanism bends

Just compressed the circular part to insert it in place. Already melted & will not function again with use of the oven; cannot turn off the oven with this knob. Need to find a safer substitute for this knob. I took it out again and am using the eraser end of a pencil to turn off my oven. At least it is easy to take out; it could be melted to the control panel. It is all in how you look at the situation...might as well laugh since I can eventually turn off the oven.