Advantages of various materials of rubber sealing ring in low temperature environment

The performance of rubber sealing ring in low temperature environment is directly related to the stability and safety of the equipment. Different types of rubber materials have different advantages at low temperatures. This article will explore the advantages of several common rubber materials at low temperatures to help select suitable sealing materials to cope with harsh operating conditions.

First, fluorine rubber (FKM)

Fluororubber, often referred to as fluororubber (FKM), is a material with excellent chemical and heat resistance. In the low temperature environment, the advantages of fluorine rubber are mainly reflected in the following aspects:

Excellent low temperature flexibility: fluorine rubber can maintain good flexibility in low temperature environment, suitable for -20°C to -30°C working environment.

Stable physical properties: At low temperatures, fluorine rubber can maintain its excellent sealing performance and is not prone to embrittlement or cracking.

Aging resistance: fluorine rubber has strong aging resistance and can maintain long-term stability under low temperature conditions.

Two, fluorine silicone rubber (FMVQ)

Fluorosilicone rubber (FMVQ) is a material that combines the properties of silicone rubber and fluororubber and is suitable for extreme low temperature environments. Its advantages include:

Excellent low temperature adaptability: Fluorosilicone rubber can maintain flexibility and elasticity in low temperature environments below -50°C, suitable for applications in extremely cold conditions.

Excellent chemical resistance: fluorine silicone rubber can resist the erosion of a variety of chemical substances in low temperature environments, suitable for a variety of harsh environments.

Superior heat resistance: Although the main concern is low temperature performance, the heat resistance of fluorosilicone rubber is also very good, and can handle high and low temperature alternating environments.

Nitrile butadiene rubber (NBR)

Nitrile butadiene rubber (NBR) is a commonly used rubber material that also performs very well at low temperatures. Key benefits include:

Good low temperature flexibility: NBR is able to maintain good flexibility at temperatures as low as -40°C, making it suitable for most low temperature applications.

Excellent wear resistance: at low temperatures, the wear resistance of nitrile rubber does not decrease significantly, which helps to extend the service life of the seal ring.

Economy: Compared with fluorine rubber and fluorine silicone rubber, nitrile rubber has low cost and high cost performance, and it is the optimal low temperature sealing material for cost performance.

4. Silicone Rubber (VMQ)

Silicone rubber (VMQ) is a material with good low temperature properties, especially suitable for some specific low temperature applications. Its advantages include:

Excellent low temperature flexibility: The flexibility and elasticity of silicone rubber at low temperatures are excellent and can be used in environments below -60°C.

Good antioxidant properties: silicone rubber can maintain stable physical properties in a low temperature environment, strong antioxidant properties, suitable for long-term use.

Excellent chemical stability: silicone rubber has good resistance to many chemical substances and is suitable for chemical corrosion environment.

conclusion

It is very important to choose the suitable rubber sealing material in the low temperature environment. Different materials such as fluorine rubber, fluorine silicone rubber, nitrile rubber and silicone rubber have different advantages and can meet the needs of different low temperature applications. Understanding the properties of these materials can help make more reasonable choices in the design and maintenance phase to ensure stable operation and efficient sealing of equipment at low temperatures.