There are different types of seal rings, each with its own characteristics and applications. One type is the single seal. A single seal ring provides a basic level of sealing and is often used in less demanding applications where the pressure and temperature conditions are relatively moderate. It consists of a single ring that forms a seal between the rotating and stationary parts of a system.

Component seals are another type. These are seals that are made up of multiple individual components. Each component plays a specific role in the sealing process. Component seals can offer more flexibility in design and can be customized to fit specific requirements. They are often used in applications where a combination of different sealing functions is needed.

The double seal is another option. As the name suggests, it consists of two seal rings arranged in series. The double seal provides enhanced sealing performance compared to a single seal. It can handle higher pressures and is more reliable in preventing leakage. It is commonly used in applications where a higher level of safety and sealing integrity is required.

Double Mechanical Seal is a specific type of double seal that uses mechanical means to maintain the seal. It typically consists of two sets of stationary and rotating seal faces. The double mechanical seal offers excellent sealing performance even under harsh operating conditions. It is often used in critical applications such as in pumps handling corrosive or hazardous fluids.

In conclusion, seal rings are essential for maintaining the integrity of mechanical systems by preventing leakage. The choice of seal ring type, whether it is a single seal, component seals, double seal, or double mechanical seal, depends on the specific requirements of the application, including factors such as pressure, temperature, fluid type, and the level of sealing reliability needed.