In many silicone products, deformation often occurs in the process of use, such as the common silicone sealing ring, for example, some sealing products are long-term adhesive and metal pressing and extrusion, after frequent stress resulting in silicone sealing ring does not rebound, no stress phenomenon, some sealing rings are used in harsh environments for a long time, such as oxygen, heat, light under the action of aging phenomenon resulting in phase distortion. Therefore, in the initial stage, the use environment and time of silicone seals need to consider whether the material and the product can maintain a long-term life, and the elasticity is not affected.
In the process of use, a variety of high and low temperature is a major factor affecting the product, although the silicone material can accept more than 200 degrees to -40 degrees of high temperature, but long-term suitable for harsh heat conditions will accelerate the aging of the silicone seal ring, the higher the temperature, the greater the deformation of the product will be, and the largest force deformation of the silicone material is generally more than 40% will completely lose working performance. Causes the seal to leak and so on. When used at low temperatures, it is recommended to appropriately increase the compression and tensile degree. When used at low temperatures, attention should be paid to the phenomenon of product necrosis and deformation and rupture.
Tensile degree is one of the main operating capabilities of silicone sealing ring, so in the production of silicone products manufacturers will choose the corresponding pull strength material and various hardness of the use of conditions, so for long-term repeated use of the demand can choose high tensile silicone material processing production, in order to prevent the growth of products over time and affect the performance of the product, Due to the long-term operation of silicone rubber beyond the tensile range of the use of the case will often make the product become relaxed, lose tension, so in sufficient conditions to reduce the work of the tensile degree, long-term use of the biggest factor affecting the deformation of silicone material, so reduce the working pressure is the best way to maintain the seal ring, in addition to the performance of the product using high-quality materials, The higher the high tensile force and the higher the hardness of the product, the better the product quality.
