40 Piece High Temp Silicone Rubber Protective End Cap Kit - 3/32" To 3/4" For This 40 Piece Silicone Cap Kit is a great fit for anyone who needs protective end caps for their project. While most commonly used for masking purposes during powder coating and painting, there are hundreds of other uses around the shop, home, lab, classroom, etc. You will receive 5 of every common size cap (40 total) to fit any size part up to 3/4" (19mm) in diameter. This superior grade of silicone is capable of withstanding temps up to 600 degrees Fahrenheit (315 Celsius) for at least 20 minutes and holds up to most chemicals. It is ultra tough yet flexible, reusable and will not crack, harden, shrink or break over time. Unlike the competitors, all of our premium silicone goods are color coded for ease of use and the color will never bleed or fade. 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.