The rubber does not reach the normal sulfur point during vulcanization, the vulcanization speed is too long, and the vulcanization is insufficient, resulting in poor rubber elasticity. You can solve the problem of poor resilience and slow vulcanization by increasing the overall vinyl content in the rubber, and adding an appropriate amount of hydrogen-containing silicone oil to the formula, reducing the amount of filler and increasing the rubber content; also different models can be used. Raw rubber with vinyl content, used in combination with a small amount of high vinyl raw rubber to control the permanent deformation of the rubber. To find an optimal balance point in the formula, to avoid the brittleness of the rubber, to improve Purpose of rubber elasticity.