Silicone rubber sheet is chemically bonded to an aluminum substrate using our proprietary process for durability. Our silicone rubber is heat tolerant to 500 degrees Farenheit and provides a non-marring surface. Schwerdtle silicone sheets are used extensively in assembly and decorating operations, such as heat transfers and sealing. Stock sheets can easily be fabricated into components such as push bars and grippers. This ITEM: Backing Thickness: 1/16″ (1.5875mm) -Soft; 60B Silicone Thickness: 1/16″ (1.58mm); Sheet size: ; 12″ x 12″ (304.8mm x 304.8mm).