- RSS3 rubber sheets are used in the production of Tyres (tires) & Tubes, Tread Carcass, Off road tyres & ADV tyres, Extruded hoses, Footwear etc. Tyre industry is the biggest consumer of RSS3 rubber sheets. - Dry mould no more than 10%, clean , dry, strong, small-scattered bubbles, specks of bark, free from blemishes, sand, foreign matter, under-cured. Dirt (Max % Wt) 0.008 Ash (Max % Wt) 0.304 Volatile matter (Max % Wt) 0.34 Nitrogen content (Max % Wt) 0.43 PRI (Min) 83.1 Innitial Wallace plasticity 41