Is the sealing ring silicone or rubber?

Silicone waterproof sealing ring is famous for its good waterproof performance, but its resistance to water vapor is not good, and it is not recommended to use it when the pressure exceeds 50 Pa. Compatible with most oils, chemicals and solvents. Generally, silicone rubber has good acid and alkali resistance, acceptable resistance to polar solvents, but not alkane hydrogen and aromatic oils. It is not recommended to be used in most concentrated solvents, concentrated acids, oils, and diluted caustic soda solutions. Special silicone rubber also has radiation resistance, flame resistance, oil resistance and other properties. It has low tensile strength and weak wear resistance, and is generally not used for dynamic seals.


Waterproof sealing ring is the most commonly used seal in hydraulic cylinders. It is a typical lip seal. It can achieve good sealing effect whether it is used for piston or piston rod. , Only rely on the interference deformation of the lip to generate the seal. Because of the small contact area, the friction force is relatively low. As the pressure increases, the elastic deformation of the lip increases, and the tensile, compressive and bending stresses increase. The pressing force automatically increases, and the length of contact with the sealing surface continues to increase until the entire axial length of the U-shaped ring is in contact with the sealing surface, thereby ensuring good sealing performance under high pressure.


Silicone waterproof sealing ring is a new type of sealing and environmental protection product. It introduces advanced technology from the same industry in developed countries and silica gel as raw material. The silicone waterproof sealing ring manufactured by advanced vulcanization process has high quality and stable performance, and is well received by domestic users in the industry. favorite