Spring energized seals can be produced for applications where traditional seal design is not adequate. No matter what the media a seal can be designed to fit the application. Common seal applications that call for spring loaded seals range from explosive decompression resistant seals, extreme temperature applications, high surface speeds, non-lubricated systems, Extreme pressure, Vacuum applications and more.

The spring energized seals consist of a jacket made of the rmoplastic like PTFE(or other polymer materials) and an embedded spring made of different materials. At certain pressures, the system pressure will energize the seal and prevent leakage. But at low pressures, additional energy is required to force the jacket material to mate with the hardware. The solution to this is to add a spring to the seal. The spring provides the needed sealing-energy to prevent leakage at low media pressures. It is widely used in dynamic and static application.

Figure 1 : Below ≈ 0.69Mpa the spring provides the sealing force

Represents a low-pressure sealing situation where the system pressure alone does not provide enough force to seal. The spring in this situation provides the necessary sealing force. Below approximately 0.69 Mpa the spring energizer supplies the internal force to create a positive seal.

Figure 2 : Above ≈ 0.69Mpa the system

Represents a higher pressure application where system pressure is sufficient to create a positive seal. This threshold occurs at approximately 0.69Mpa allowing system pressure to take over and provide the sealing force.