Part 1: Functions of Sealing Rings
Sealing rings serve important purposes in industrial equipment, including:

1. Leakage prevention: Sealing rings effectively seal off liquids or gases, preventing them from leaking into the surrounding environment.

2. Contamination prevention: Sealing rings obstruct the entry of external impurities, ensuring the cleanliness and proper operation of equipment.

3. Friction reduction: Sealing rings minimize friction between moving parts, thereby enhancing equipment efficiency and longevity.

Part 2: Common Types of Sealing Rings

1. O-rings: O-rings are the most prevalent and widely used type of sealing rings. They possess a circular cross-section and are suitable for both static and dynamic sealing applications.

2. U-rings: U-rings feature a U-shaped cross-section and are commonly employed as piston seals in hydraulic and pneumatic equipment.

3. V-rings: V-rings have a V-shaped cross-section and are commonly used for sealing rotating shafts, offering excellent sealing performance and wear resistance.

Part 3: Significance of Sealing Rings in Industrial Applications

1. Enhanced equipment reliability: Proper selection and utilization of sealing rings improve equipment sealing performance, reducing the risk of leakage and malfunctions, thereby enhancing reliability and stability.

2. Increased operational efficiency: Well-functioning sealing rings minimize energy waste and loss, improving equipment efficiency and lowering production costs.

3. Environmental protection and safety: Effective sealing provided by sealing rings prevents hazardous substances from leaking into the environment, ensuring worker safety and equipment protection.

Conclusion: Sealing rings play a crucial role as key components in industrial applications, ensuring proper equipment operation and safety. Correct selection and utilization of sealing rings enhance equipment reliability, efficiency, and safeguard the environment and personnel. Therefore, the significance of sealing rings in industrial applications cannot be underestimated.