The spring-energized seal, with its unique dynamic compensation ability and adaptability to extreme working conditions, has become the “sealing defense line” of high-end industrial equipment.
However, it keeps its best performance when you install it correctly. Improper installation may easily lead to seal failure and leakage and affect equipment performance.
When discussing the installation of the spring-energized seals, you first need to understand the different types of installation grooves. The groove designs not only affect the sealing effect but also affect the convenience of installation and long-term stability.
This article will introduce in detail the characteristics of various spring-energized seal grooves, how to install the spring-energized seals, and the precautions during the installation process so as to help you easily master the installation skills of the spring-energized seals.
Groove classification and characteristics
During the installation of the spring-energized seals, we will encounter many types of grooves, including split-type grooves, stopper-type grooves, integral-type grooves, etc. Different groove designs have their own characteristics. Choosing the right groove type affects the installation efficiency and sealing effect.
In addition to these common groove types, other types of grooves may also be encountered. The design and applicability of these groove types vary. The type to be selected will depend on the specific situation to ensure a smooth installation process and the sealing effect.
Preparation before installation
Before starting to install the spring-energized seals, there are several preparations that you need to complete in advance to ensure a smooth installation process:
Cleaning the groove and seal: Before installation, carefully clean the installation groove and seal to ensure that the installation surface and seal are clean and free of impurities and burrs to avoid any particles from damaging the sealing surface.
Lubrication: Then, carefully apply an appropriate amount of grease to the lip of the spring energised seals, which not only helps to reduce friction during installation but also provides additional lubrication and protection for the seal ring during initial use.
Check the condition of the seal: Check whether the spring-energised seal is aged or deformed, whether it is intact and meets the size requirements, use special tools to measure the installation hole diameter, and ensure that it matches the spring-energised seal’s size correctly. This is the first step to avoid installing too tightly or too loosely.
Installation steps and notes
Before installation, please pay attention to the direction of the sealing lip; do not install it opposite, and avoid excessive stretching or twisting of the spring seals in order to prevent a negative impact on the sealing effect.
During installation, you can use special tools to align the axis and push it in gently and steadily. Avoid tilting or forceful knocking to avoid damaging the sealing ring structure.
For seals with springs, ensure the spring faces the pressure source. It will take full advantage of the self-centering feature and improve sealing performance.
Chamfer Requirements
1. Piston seals installed into open or semi-open grooves with the lip facing forward:
All sharp edges should be rounded to R = 0.5 mm (chamfer as shown in the diagram)
2 . Piston seals installed with lip facing backward:
All sharp edges rounded to R = 1 mm (chamfer as shown)
3. Rod seals installed with lip facing forward:
All sharp edges rounded to R = 0.5 mm (chamfer as shown).
4. Rod seals installed with lip facing backward:
All sharp edges rounded to R = 1 mm (chamfer as shown).
Testing after installation
Confirm the seal is correctly and securely in place.
Perform a functionality test before full operation.
Keep working temperature and pressure within the seal’s rated limits.
Watch for any signs of leakage.
In short, although the installation of the spring-energized seals seems simple, every step needs to be meticulous.
The correct installation method is the premise to ensure that it can achieve the best sealing effect. In the kingdom of precision machinery, every detail may be the key to success or failure.
,
