What are the important factors to consider when designing rubber seals and gaskets?

Number of hits：8742023-02-24 11:52:59　

　　Leakage of fluids such as liquids and gases is one of the main concerns across industries as they are used as a part of different industrial processes. To avoid this, manufacturers use different types of rubber seals and gaskets in equipment responsible for transporting these fluids. Thus, rubber seals have become an integral part of valves, pumps, fittings, and vacuum seals. Does this mean that all rubber seals are the same? No, they differ in the way they are made. They also differ in design, material, and other specifications. Therefore, several factors must be kept in mind when designing seals for your industrial application. This post outlines several important factors to consider during the construction of rubber seals and gaskets.

　　Important considerations when designing rubber seals and gaskets:

　　The failure of rubber seals or gaskets can affect the performance of the application. This means that you cannot make a wrong choice, can you? The following instructions will help you make the right decision about these seals:

　　Use environment: Perhaps, you may agree that frequent replacement of gaskets is time-consuming or frustrating. To avoid this, it is important to consider their installation environment. There are some limitations in materials across industries such as food and pharmaceuticals. Consider the following will help you choose seals and gaskets better:

　　Compatibility with the chemicals used.

　　The effect of pressure and temperature on the seal.

　　The effect of friction, as it can cause excessive pressure to build up and tear the sealing part.

　　The accumulation of tolerances for different parts of the seal.

　　Dimensional requirements: What is the correct seal? How does it happen? The seal occurs when the seal is compressed between two surfaces. Compression causes deformation, which helps prevent fluid leakage. To achieve this deformation or proper compression, the cross-section of the seal must be greater than its cover depth. If the cross-section is too small or too large, the seal may not compress properly or damage the connection between the two mating surfaces.

　　Consider adhesive attachment systems: Always ensure that the attachment surface is 1/8 "wide. The adhesive must be placed on the flat surfaces of the substrate and the seal. When designing rubber seals for your application, you must consider the thickness of the adhesive.

　　Total amount of load applied: What is the direction of the load applied? If the load applied is greater than or less than the specified value, the result may be disappointing. By managing the cross-sectional shape or adding a hollow section or hole in the cross-section, the total amount of load applied can be easily controlled.

　　Required closing force: How much closing force is required for the application? How much closing force can the application withstand? If the seal is designed to withstand a force of 20 pounds, it is not suitable for an application that may withstand 50 pounds. In addition, you also need to consider the force required on the seal, surface area, and cross-sectional size.

　　Types of friction to withstand: In dynamic moving applications, friction is mainly divided into two types - breakthrough friction and running friction. If the part movement is intermittent, breakthrough friction will cause high pressure to be generated. However, running friction will cause heat to accumulate, leading to swelling. In both of these scenarios, friction can cause seal failure.

　　Considering all of these factors will help you achieve better sealing performance. However, if you are unable to make a decision, you can contact experienced manufacturers like NQKSF who will help you make the right decision. The company has been providing rubber gaskets and seals of various specifications to meet complex application requirements.