How to choose the base material of the mechanical seal

Seals are mainly divided into three types: mechanical seals, rubber and plastic seals and flexible graphite seals, and their base materials are mechanical skeleton, rubber, plastic and graphite.

Polyurethane can be used. Nitrile rubber or ternary propylene material are all soft, and the hardness can be made according to what you need.

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See what model your mechanical seal is.

Mechanical seals refer to a way of using mechanical devices to achieve seals, and are commonly used in various industrial fields. The material of the mechanical seal is one of the important factors affecting the performance of the mechanical seal. So, what are the hail grips made of mechanical seal materials? Let's take a look at it.

1.Metal mechanical seal material.

Metal is a material commonly used in mechanical seals. Commonly used metal materials are stainless steel, copper, aluminum, tungsten, etc. This material is resistant to high temperatures, abrasion and at the same time.

Different metal materials also have different characteristics. For example, stainless steel is one of the most widely used materials for mechanical seals. It has good corrosion resistance and plasticity, and has high hardness and good dimensional stability, so it is widely used in various mechanical seals.

However, there are also some disadvantages of metal mechanical seal materials. For example, metal materials are prone to cause friction, wear and tear, and are also prone to jamming. Therefore, it is necessary to carefully select the material of the mechanical seal when using mechanical seals.

2.Ceramic mechanical seal material.

Ceramic is one of the most widely used mechanical seal materials. Ceramic mechanical seal material has many advantages, such as high hardness, good corrosion resistance, high temperature resistance, not easy to wear and tear, and so on. The use effect of this material in harsh environments such as low temperature, high temperature and high pressure is particularly obvious.

The ceramic materials on the market include zirconia ceramics, graphite ceramics, silicon carbide and so on. Among them, the use of zirconia ceramics is the most prominent, and it has become a leader in the field of mechanical seal materials.

3.Sealing packing mechanical seal material.

Sealing packing is an important part of mechanical seals, which can play the role of filling and sealing. There are many types of sealing packings on the market, such as carbon fiber, graphite, PTFE, and so on. Each of these materials has its advantages and disadvantages.

For example, carbon fiber has good wear resistance, corrosion resistance, thermal conductivity, etc. after special treatment. It can be used in harsh environments such as high temperature, low temperature, acid and alkali, and the cost is relatively low, so it has become a commonly used sealing packing.

However, as the environment changes, seal packing has some limitations. For example, in acidic environments, graphite fillers are susceptible to corrosion, while in alkaline environments, PTFE can become soft or even corrupt. Therefore, when selecting a seal packing, it needs to be combined with the requirements of the specific environment and the material of the mechanical seal.

Conclusion: The above is the relevant introduction of mechanical seal materials. Due to the wide variety of mechanical seal materials, each mechanical seal material has its advantages and disadvantages, and the selection needs to be selected according to the specific situation.

At the same time, the operating environment of the mechanical seal also directly affects the use of the mechanical seal. Therefore, when using mechanical seal materials, the working environment of mechanical seals should be fully considered, so as to select the most suitable mechanical seal materials.