High Temperature Phenolic Wheels are best suited for dry heat applications such as powder coating, dry heat autoclaves and bakery ovens. Temperature Rating: Up to 475° F for 30 minutes MAXIMUM continuous operation. Then allow to cool to room temperature. If used above 475° F for more than 30 minutes continuous operation it will reduce the life of the wheel. Not recommended for wet or wash-down environments. Hard durometer wheel rolls easy, provides great concrete floor protection and is much quieter than steel wheels. Highly resistant to oil, grease, acids and solvents, non-sparking and non-metallic Features High-Temperature Applications Resistant to oil, grease, solvents. Easy Rolling Great on Concrete Quieter than steel wheels Non Marking Non Sparking Impact Resistant