O - RING SEALS INDUSTRIES

At DMB Seal, we understand that your project is facing various pressure demands. With 30 years of professional experience, we are not just suppliers; We are your partner on the journey to find the perfect seal for any pressure situation.
We created this guide to make your selection process as smooth as possible. Our focus is on performance, reliability, and compatibility, giving you confidence that your seal selection can withstand the pressure required for the project.

Understand the pressure environment of seals

It is helpful to consider the pressure environment of the application when starting to search for industrial seals. Applications exposed to harsh conditions, such as oil and gas, heavy equipment, and hydraulic and pneumatic systems, may require a high-performance seal in high-pressure or low-pressure environments.  

High pressure environment
Under high pressure, you need a seal that will not deform or lose strength. The focus should be on selecting seals that can withstand ruthless forces and maintain their integrity. Choosing a seal that will not shake under extreme pressure is crucial to ensure safety and reliability under the most demanding conditions.

Low pressure environment
In low-pressure environments, the challenges are different. Although high-pressure environments are often considered more complex, low-pressure environments also have their unique challenges. For example, at colder temperatures, seals designed for low pressure may not have enough energy to work effectively.
Under these conditions, even with minimal force applied, the seal must remain effective. This is not just a matter of bearing pressure; Seals must be able to adapt to small changes and maintain consistent sealing under various conditions.
To choose the appropriate seal for your application, match the characteristics of the seal with the specific pressure requirements of the application.

Select seal material

After understanding the pressure environment of your application, you can choose suitable materials with hardness levels that meet specific requirements.

Generally, softer materials such as silicone resin or universal nitrile with lower Shore A hardness are more suitable for low-pressure environments. These materials provide flexibility and reliable sealing with minimal force.  

Materials such as polyurethane or high hardness nitrile have a higher Shore A rating and are highly suitable for high-pressure applications due to their strength and resistance to deformation under high pressure.

Material properties such as hardness and compression set can help you determine the pressure resistance of the seal. Hardness is measured at Shore A level, indicating the material's ability to withstand physical stress without deformation. In other words, harder materials can maintain their shape and seal in high-pressure environments.  

The degree to which a compressed permanent deformation measurement material returns to its original thickness after compression. Low compression permanent deformation is very suitable for dynamic applications where seals are repeatedly compressed and released. This helps to maintain the effectiveness of the seal over time.

It is also important to consider the effects of temperature and chemical exposure on the selected materials. When subjected to high temperature and pressure, the material will soften and become more susceptible to compression. Similarly, exposure to certain chemicals can lead to material degradation, thereby altering its physical properties and performance.

By understanding the material properties and environmental conditions, you can make wiser decisions and choose effective materials that can maximize performance and durability.

Test the performance of your seal

Once you have selected the seal based on pressure, materials, and environmental factors, the next key step is testing. At DMB Seal, we recognize that the true measure of seal performance lies in its ability to function under real-world conditions.

We suggest testing various factors such as pressure, temperature, and chemical exposure. These tests will help you identify any potential weaknesses in the seals and ensure that your sealing solution is appropriate and reliable.  

One of the benefits of collaborating with DMB Seal to find suitable sealing solutions is that you have access to top global suppliers. Through these partnerships, we can provide additional support and services, such as finite element analysis (FEA), to give you peace of mind when choosing.

Conclusion

We are committed to guiding you in selecting the appropriate seal according to your needs. We understand what failure means for your operations, and the success of your project depends on the reliability and performance of the seals you choose.

If you need help navigating this process to find the seal that suits your project, please consult DMB seal team. We have over 15 years building relationships with global seal manufacturers, providing you with thousands of types of seals, gaskets, O-rings, and other special products suitable for any application.