The differences between silicone sealing rings and other sealing rings: 1. Excellent weather resistance. Weather resistance refers to a series of aging phenomena such as fading, discoloration, cracking, powdering, and strength reduction caused by external conditions such as direct sunlight and temperature changes. Ultraviolet irradiation is the main factor that promotes product aging. The Si-O-Si bond of silicone rubber is very stable to oxygen, ozone and ultraviolet rays, and has excellent resistance to the attack of ozone and oxides. Without adding any additives, it has good weather resistance and will not crack even if it is used outdoors for a long time. 2. The materials are safe and environmentally friendly. Silicone rubber has its unique physiological inertness, odorless, does not turn yellow or fade after long-term use, is less disturbed by the external environment, complies with national food and medical and health standards, and is mostly used to filter and remove impurities in food, aluminum, silver paste and various greases. . 3. Good electrical insulation performance. Organic silica gel has excellent electrical insulation properties, and its corona resistance and arc resistance are also very good. 4. High air permeability and selectivity for gas permeation. Due to the molecular structure of silicone, silicone sealing rings have good air permeability and selectivity. At normal temperature, silica gel is 30-50 times more permeable to air, nitrogen, oxygen, carbon dioxide and other gases than natural rubber. 5. It has hygroscopic properties. The silicone ring has a low surface energy and can absorb moisture in the environment and play an isolation role. 6. Wide range of high and low temperature resistance: 1. High temperature resistance: Compared with ordinary rubber, sealing rings made of silicone have better heat resistance, can be heated at high strength and high temperature without deformation, do not contain harmful substances, and are widely used in Where heat resistance is required, such as thermos bottle seals. 2. Low temperature resistance: Ordinary rubber will become hard and brittle at -20 ~ -30 degrees, while silicone rubber still has good elasticity at -60 ~ -70 degrees. Some specially formulated silicone rubber can withstand higher temperatures. Severe and extremely low temperatures.

Disadvantages of silicone sealing rings: 1. Poor mechanical properties such as tensile strength and tear strength. In the case of tension, tearing and strong wear in the working environment, the use of silicone rubber sealing rings is not recommended and is usually only used for static sealing. 2. Although silicone rubber is compatible with most oils, compounds, and solvents and has good acid and alkali resistance, it is not resistant to alkanes and aromatic oils. Therefore, it should not be used at operating pressures above 50 pounds. Additionally, silicone seals are not recommended for use with most concentrated solvents, petroleum products, concentrated acids, and dilute caustic soda solutions. 3. In terms of price, compared with other materials, the manufacturing cost of silicone rubber sealing rings is relatively high.