... economical product, low rate of water absorption, resilience, durability. With a melting point of 215C and heat distortion temperature of170C ... employed under the working condition of high speed and pressure to prolong its lifetime.Deburring, polishing or sanding. Machining, ... the extra mile, you will also find co-extruded abrasives with up to 5 ends , which considerably extends the lifetime of brushes ...