Commercial black rubber sheeting is an economical choice for creating waterproof seals and gaskets in marine applications offering the necessary balance of flexibility strength and elongation required for such purposes. The material has a hardness of 68 degrees Shore A indicating its flexibility and ability to conform to various shapes and surfaces. It has an elongation at break of 200% meaning it can stretch up to twice its original length before breaking indicating its flexibility and elasticity. Specifically suited for use in marine applications where it can serve multiple purposes due to its versatile properties. Versatile ‘general purpose’ grade rubber sheeting often used in marine applications Ideal as a low-cost solution for waterproof seals and gaskets 68 degrees shore A hardness Tensile strength at break: 3.0 Mpa Elongation at break: 200% Min temp-30°C max temp +80°C Resistant to dilute chemicals Test Temperature 25°C Relative Humidity 35% Test by GB5574-94 Correlation criterion GB/T528-1998 GB/T3512-1989 GB/T531-1992 SBR Material