Cellular bumpers / buffers are characterized by high energy absorption with long compression lengths. This results in low final pressures and favorable retardation values. Cellular buffers are made from a cellular Polyurethane Elastomer with high structural resistance. Their principal quality is the volume compressibility, which is responsible for their relatively low transverse expansion during load application. Cellular buffers are resistant to aliphatic hydrocarbons, such as oil and grease, and against ageing. A general resistance can therefore be assumedfor technical applications.The cellular buffers are not resistant to strong acids and leaches. The operating temperature is between –20°C and +80°C.Generally special types are only offered and supplied on request. If cellular buffers are mounted over 3 m high they have to be secured by installation of safety ropes.Material of the cellular bodyStandard qualityCellular Polyurethane Elastomer with volumetric weight 0.53 g/cm³Special qualityFor dynamic load and high elasticitySpecial volumetric weight 0.35 g/cm³ (soft) to 0.65 g/cm³ (hard)Due to their excellent properties of energy absorption the cellular buffer Programme is a suitable complement to the rubber buffer Programme. Their volume compressibility allows long compression lengths, which allows very good retardation values.