Pure Gum Rubber - Commerical Grade - 40A - Rubber Sheet - Tan Gum in Color - 1/2" Thick x 6" Width x 6" Length Pure gum rubber is a full floating natural rubber This flexible rubber has excellent pliability and compressibility Tan Gum rubber with minimum tensile strength of 2850PSI (19.5 MPA) Pre-cut widths and lengths available in 3 thicknesses (1/16, 1/8, 3/16, 1/4, 3/8, 1/2) Natural rubber is a soft rubber with a durometer of 35-45 and offers excellent elasticity