1. O-ring: O-ring is a rubber ring with a circular cross-section, widely used in various sealing applications, such as hydraulic cylinders, air cylinders, pressure vessels, etc. Its advantages are low cost, high temperature resistance, high pressure resistance, corrosion resistance, etc.

2. Lip seal ring: Lip seals are mainly used for axial sealing applications such as piston rods and valve stems, and are divided into front and rear lips. The front lip contacts low pressure, while the rear lip contacts high pressure, thus forming an effective seal.

3. V-shaped sealing ring: A V-shaped ring is a rubber ring with a rectangular cross-section, composed of multiple small sections, which can form a multi-stage sealing effect. Its advantages include good wear resistance, high temperature resistance, high pressure resistance, etc.

4. Glay Ring: Glay Ring is a composite seal composed of an O-ring and a set of elastic materials, which has two functions: static sealing and dynamic sealing. Its advantages include good wear resistance, high temperature resistance, high pressure resistance, etc.

5. U-shaped sealing ring: A U-shaped rubber ring is mainly used for sealing flange connections, valves, and other occasions. Its advantages are low cost, high temperature resistance, high pressure resistance, etc.

6. Y-shaped sealing ring: Y-shaped ring is a composite seal made of polytetrafluoroethylene, which has the advantages of high temperature resistance, corrosion resistance, and low friction coefficient. It is widely used in various sealing occasions, such as chemical and pharmaceutical industries

7. Sealing: Sealing is a composite seal made of polytetrafluoroethylene, which has two functions: static sealing and dynamic sealing. It is widely used in various sealing occasions, such as hydraulic cylinders, air cylinders, etc.

8. Piston ring: A piston ring is a composite seal made of metal, which has the advantages of good wear resistance, high temperature resistance, high pressure resistance, etc. It is widely used for sealing between pistons and cylinders in various internal combustion engines, compressors, and other occasions.