Gray SBR Sheet is composed of both SBR rubber (Styrene Butadiene Rubber) and natural rubber. This blended natural and SBR sheet rubber comes in a gray color, which provides for an alternative option to the standard black. This sheet rubber is popular for use in applications that need a non-marking material. Unlike black rubber, this Gray Sheet does not leave behind any unsightly marks or stains. The SBR rubber found in the Gray Sheet possesses good oil, ozone, and chemical resistance properties for your chosen projects. In addition, the physical characteristics of Gray Sheet allow it to be used in various ways.