PU Flexible Rubbers
A range of flexible polyurethane rubbers. The higher the Shore number the harder the rubber. The softest A35 is slightly firmer than a pencil eraser. A65 is similar to natural rubber such as mats, door seals, bumb stops and bushes. A80 is commonly used for firmer/stiffer uprated versions widely known as sports or racing poly-bushes. A90 is very hard and is typically used for durable wheels on trollys and skate boards etc.
