In the industrial sector, transmission hydraulic seals are a key component to ensure the efficient and stable operation of mechanical systems. The material selection of these seals directly affects the performance, life and maintenance costs of the equipment. Therefore, its materials must meet a series of special requirements to meet the various challenges in the industrial environment.
1. Wear resistance and corrosion resistance
Transmission hydraulic seals need to withstand frequent friction and pressure in the work, so the material must have extremely high wear resistance. The wear-resistant material can reduce the wear of the seal and extend its service life. In addition, chemicals and liquids in the industrial environment may cause corrosion to the seals, so the material also needs to have good corrosion resistance to resist the erosion of acid, alkali, oil and other corrosive media.
2. Stability at high and low temperatures
In industrial applications, hydraulic systems may operate at extreme temperatures, ranging from high to low temperatures. Therefore, the material of the seal must be able to maintain its physical and chemical stability over a wide temperature range. For example, at high temperatures, the material should not be softened or deformed; At low temperatures, the material does not become brittle or lose elasticity, ensuring that the seal can work effectively in a variety of temperature conditions.
3. Good elasticity and resilience
The main function of the seal is to prevent liquid or gas leakage, which requires the material to have good elasticity and resilience. When the pressure changes or mechanical movement, the material can be quickly restored to its original state to ensure the sealing effect. Poor elasticity of the material can lead to seal failure, which can lead to equipment failure or production disruption.
4. Chemical compatibility
Seals come into contact with a variety of hydraulic oils, lubricants and other chemicals during use, so the material must have good chemical compatibility with these media. Poor chemical compatibility can lead to material expansion, contraction or deterioration, thus destroying the sealing effect.
5. Resistance to compression and permanent deformation
In high pressure environments, seals may withstand compression forces for a long time. The material must have the ability to resist compression permanent deformation, that is, to maintain its shape and performance after a long period of compression, without permanent deformation. This is directly related to the long-term reliability and performance stability of the seal.
6. Low friction coefficient
In order to reduce energy loss and friction heat, the material of the seal should have a low coefficient of friction. The low friction coefficient helps to improve the efficiency of the system, reduce equipment wear, and extend the service life of the equipment.
7. Processability and economy
Although the performance of the seal is crucial, the selection of its material must also take into account the ease of processing and economy. Easy to process materials can reduce production costs and shorten production cycles, while ensuring the consistency and quality of seals.
Common industrial materials
In industrial applications, common transmission hydraulic seal materials include:
Fluororubber (FKM) : has excellent resistance to high temperature, oil and chemical corrosion, widely used in a variety of harsh industrial environments.
Nitrile butadiene rubber (NBR) : has good oil resistance and wear resistance, suitable for petroleum and mineral oil media.
Polytetrafluoroethylene (PTFE) : has a very low coefficient of friction and excellent chemical stability, widely used in high-precision seals.
Hydrogenated nitrile butadiene rubber (HNBR) : A combination of the advantages of nitrile butadiene rubber and fluorine rubber, with better heat and chemical resistance.
Silicone rubber (VMQ) : has excellent low temperature resistance and good elasticity, suitable for low temperatures or extreme temperature changes in the environment.
conclusion
The industrial material requirements of transmission hydraulic seals are extremely strict, covering wear resistance, corrosion resistance, temperature stability, elasticity, chemical compatibility, compression resistance to permanent deformation, low friction coefficient and many other aspects. Choosing the right material can not only improve the performance and reliability of the equipment, but also reduce maintenance costs and extend the service life of the equipment. Therefore, when designing and selecting seals, these special requirements must be fully considered to ensure their best performance in various industrial environments.
FOREVER SEALS! Seals manufacturer, accept custom seals, from design to research and development, from production to testing, a full range of services. For more information, please contact FOREVER SEALS directly. FOREVER SEALS product experts are here to help you! Whatsapp: +86-18098184099；WeChat: +86-13049188460； E-mail: sales@foreverseals.com.