What is the difference between a rectangular rubber ring and an O-shaped rubber ring?

What is the difference between a rectangular rubber ring and an O-shaped rubber ring?

In industrial production and daily life, rubber seals play a vital role. Among them, rectangular rubber rings and O-shaped rubber rings are the two most common, and they have a wide range of applications in many fields. So, what's the difference between these two rubber rings?

First, characteristics and performance

Rectangular rubber rings have a rectangular cross-section and are usually round or flat at both ends. It has certain vibration and sound absorption performance, and can absorb the vibration and sound generated by the medium in the pipeline. In addition, it also has certain corrosion resistance and can be used for a variety of chemicals. Due to its special shape, rectangular rubber rings require a large space for installation and disassembly. 

The O-shaped rubber ring is annular, and its cross-section is circular. It is mainly used for dynamic sealing, such as piston, cylinder and other parts of mechanical equipment, to effectively prevent vibration and shock. It has excellent high temperature and oil resistance, and can maintain a good sealing effect under high temperature and high pressure. Compared with rectangular rubber rings, O-shaped rubber rings can be rotated and compressed more easily. 

3. Scope of application 

Rectangular rubber ring is mainly used for static sealing, such as chemical, petroleum and other fields of pipeline joints, to prevent liquid or gas leakage. In addition, it can also be used for waterproof, sound insulation and other aspects of sealing.

O-shaped rubber ring is widely used in a variety of dynamic sealing occasions, such as the piston, cylinder and other parts of mechanical equipment, effectively prevent vibration and impact.

4. Advantages and Disadvantages 

The advantage of rectangular rubber ring is that it has good vibration absorption, sound absorption and corrosion resistance. However, its installation and disassembly require a large space, which may bring some inconvenience to the operation.

The advantage of O-shaped rubber ring is that its dynamic sealing performance is excellent, and high temperature and oil resistance is good. However, its service life is relatively short and it needs to be replaced regularly.

V. Substitutes

With the development of science and technology, in view of the shortage of rectangular rubber rings and O-shaped rubber rings, some new sealing products have appeared on the market.

For rectangular rubber rings, some new sealing materials have better vibration absorption, sound absorption and corrosion resistance, and are more convenient to install and disassemble. These materials include polymer materials, composite materials, etc. 

For O-shaped rubber rings, some new sealing materials have better high temperature resistance, oil resistance and longer service life. These materials include polymer materials, ceramic materials and so on.

Although rectangular rubber rings and O-shaped rubber rings are common rubber seals, there are obvious differences in characteristics, performance and application range. The rectangular rubber ring is mainly used for static sealing, with vibration absorption, sound absorption and corrosion resistance, while the O-shaped rubber ring is mainly used for dynamic sealing, with excellent high temperature resistance, oil resistance and long service life. In industrial production and daily life, understanding and correctly selecting these two rubber rings is crucial to improving the performance and stability of equipment.