Rubber elastic cushion is characterized by both high elastic state and high viscosity state. The elasticity of rubber is produced by the change of its coiled molecular conformation. The interaction between rubber molecules will hinder the movement of molecular chains, and it shows viscosity characteristics, so that the stress and strain are often in an unbalanced state. The curly long chain molecular structure of rubber and the weak secondary force between molecules; The rubber material shows unique viscoelastic properties, so it has good shock absorption, sound insulation and buffering properties.

The rubber material for making rubber elastic cushion is generally divided into 5 kinds, namely NR, SBR, BR is ordinary rubber material; NBR is used for oil-resistant vulcanizates; CR is used for weather-resistant vulcanizates; IIR is used for high damping vulcanized rubber; EPR is used for heat resistant vulcanizates. Although the loss factor of NR is small, it has good comprehensive performance, excellent elasticity, good fatigue resistance, low heat generation, small creep, good adhesion with metal parts, cold resistance, electrical insulation and processing performance, so NR is widely used for shock absorption purposes, and when low temperature or weather resistance is required, it can be modified with BR or CR or blended. Nishiue et al. 's shock absorbers made of NR, BR and metal salts with carbon atomic number greater than 4 containing organic acids with -OH groups have good durability, and the compression deformation at 70℃×22h and 40℃×148h is 17.0% and 11.7%, respectively.

The rubber elastic pad produced by Shandong Landong Electromechanical Co., Ltd. is made of natural rubber, which is soft, elastic, viscous and has good anti-slip performance, abrasion resistance and noise reduction, and good sealing performance.