40 Piece High Temp Silicone Rubber Protective End Cap Kit - 3/32" to 3/4" for Powder Coating Custom Painting Anodizing Withstands heat up to 600 degrees Fahrenheit/315 Celsius. Flexible, durable and reusable. Use for powder coating, painting, plating, anodizing, media blasting, etc. Color coded - easily grab the right size. Premium quality silicone will not crack, shrink, harden or break.