Which Is Better Rubber Or Metal Oil Seal?

Number of hits：4372023-10-14 16:17:26　

　　Oil seals also known as shaft seals, are critical components used in various types of machinery. They are primarily used to prevent the leakage of oil or other fluids from a machine or device. The most commonly used oil seals in most applications are rubber cased or metal cased oil seals. But which one is better? Let’s delve into the advantages of each to find out.

　　Rubber Oil Seals

　　Rubber oil seals are widely used in applications where there is a risk of metal cased oil seals failing, such as due to thermal expansion. Rubber oil seals cannot rust, providing a stark contrast to metal cased oil seals. Furthermore, they can better seal slightly damaged housings because rubber can provide a more stable seal at high temperatures.

　　Rubber oil seals have several key benefits:

　　1. They can easily withstand high temperature and pressure.

　　2. They have superior ozone resistance.

　　3. They feature excellent mechanical strength.

　　4. They can be easily shaped into different contours and patterns.

　　Metal Oil Seals

　　Metal oil seals are designed to replace traditional elastomeric oil seals when the temperature, system pressure, or rotational speed exceeds the capabilities of rubber oil seals. Metal oil seals are designed to meet your specific rotary seal design requirements. Moreover, metal oil seals are used when installed into housing bores made from the same material. This allows for equal contraction and expansion of the material during operation, preventing leakage from occurring.

　　Metal oil seals offer several advantages:

　　1. They provide reliable, rugged performance.

　　2. They have a simple construction.

　　3. They offer versatility.

　　Rubber and metal oil seals have their own advantages and are suited for different applications. The choice between rubber and metal oil seals depends on the specific requirements of your application, including factors such as operating conditions, compatibility with fluids, and cost considerations. Therefore, it’s not about which one is better in general, but which one is better suited for your specific needs.