... conductivity, chock absorption and sound-absorption. This material contains a lot of fire-blocking and smoking-reducing raw materials. ... , therefore, it is a new generation high quality heat-insulating, and heat-preservation material.Foam rubber technical properties. ITEMUNITSPECIFICATIONSTANDARDDensitykg/m340 ... cracksGB/T16259150hno pin holes, not deformingTemperature -40-110GB/T17794 Rubber sheet