How do seals and lubricants on Dampers Gas Springs prevent aging in high temperature environments?

In high temperature environments, the seals and lubricants of Dampers Gas Springs are susceptible to thermal degradation, aging and performance decline. In order to extend the service life of gas springs and ensure their reliability, a series of measures need to be taken to prevent seal aging and lubricant degradation. The following are some key technologies and design solutions:

1. High temperature performance design of seals

1.1 Material selection
Seals (such as O-rings, oil seals, etc.) need to have the ability to maintain good elasticity and sealing in high temperature environments. Commonly used high temperature resistant materials include:

Fluororubber (FKM): It has very good high temperature tolerance and can usually work in the temperature range of -20°C to +250°C, and is not easy to age at high temperatures.

Silicone rubber (VMQ): Silicone rubber can maintain good elasticity and aging resistance at high temperatures, and is suitable for environments with temperatures up to +250°C.

Chloroprene rubber (CR): It has excellent heat resistance, oxidation resistance and corrosion resistance, and is often used in medium and high temperature environments.

Polyurethane (PU): Polyurethane seals are wear-resistant and high-pressure resistant, suitable for higher temperature environments, and can usually be used in the range of -40°C to +120°C.

PTFE (polytetrafluoroethylene): Suitable for extremely high temperature working environments, it can effectively resist high temperature and chemical corrosion.

Selecting the right sealing material can significantly increase the life of the seal at high temperatures and prevent seal failure caused by material aging.

1.2 Coating technology
In order to improve the high temperature resistance of the seal, surface coating technology can be used. For example, using PTFE coating (polytetrafluoroethylene) to provide a protective layer for the seal can effectively prevent the direct impact of high temperature on the rubber material.

1.3 Structural design optimization
The design and installation method of the seal also affect its high temperature resistance. For example, the contact surface of the seal needs to avoid excessive friction and compression, reduce heat accumulation, and thus extend its service life. At the same time, choosing the right seal pressure and installation position can optimize the sealing effect of the gas spring and prevent seal failure caused by thermal expansion and contraction.

2. High temperature stability design of lubricating oil
2.1 Selection of high temperature lubricating oil
Under high temperature environment, the viscosity and performance of conventional lubricating oil may change significantly, so it is necessary to use lubricating oil designed for high temperature environment. The following lubricating oils are suitable for use in high temperature environment:

Fully synthetic lubricating oil: Fully synthetic oil has excellent high temperature stability, oxidation stability and low volatility. It is often used in environments with working temperature of 150°C and above.

Silicone oil: Silicone oil can still maintain its lubricating properties under extreme high temperature and can usually be used in the temperature range of -60°C to +300°C.

Polyalphaolefin oil (PAO): This synthetic oil has very good low temperature fluidity and high temperature stability and is widely used in high and low temperature environments.

Lithium-based grease: At higher operating temperatures, lithium-based grease can provide better heat resistance and oxidation resistance.

Selecting suitable high temperature lubricating oil can significantly improve the lubrication effect of gas springs in high temperature environment, avoid insufficient lubrication due to high temperature decomposition, evaporation or viscosity change of lubricating oil, thereby reducing component wear and performance degradation of gas springs.

2.2 Application of lubricant additives
Under high temperature environment, the anti-oxidation and anti-aging properties of lubricants are particularly important. Therefore, antioxidant additives, anti-high temperature stabilizers, etc. can be added to lubricants to delay the aging process of lubricants. These additives can help oil products maintain stable physical and chemical properties under high temperature conditions and avoid oil oxidation, deterioration and carbon deposition.

2.3 Oil seal and lubrication system design
In order to ensure the effectiveness of lubricants and prevent them from volatilizing under high temperature conditions, the oil seal design of gas springs should have good sealing properties and prevent lubricants from leaking. At the same time, the lubricant should maintain proper flow and pressure inside the gas spring to ensure that the piston and other moving parts are fully lubricated.

3. Thermal management design
3.1 Thermal isolation design
In the design of gas springs, thermal isolation technology can be considered to reduce the impact of external high temperature on the internal seals and lubricants of gas springs. For example, use thermal insulation materials (such as high-temperature thermal insulation coatings, thermal insulation gaskets, etc.) to reduce the temperature conduction of external heat sources to the inside of the gas spring.

3.2 Heat dissipation design
The shell design of the gas spring can help reduce the working temperature of the gas spring by increasing the heat dissipation surface area, such as using heat sinks or surface treatment technology (such as anodizing). In addition, the heat dissipation effect can be improved by optimizing the air flow path of the gas spring to reduce the impact of high temperature on seals and lubricants.

4. Maintenance and monitoring
Regular inspection and maintenance are the key to preventing the aging of gas spring seals and the failure of lubricants in high temperature environments. When using gas springs dedicated to high temperature environments, a monitoring system can be set up to monitor the working status of the gas spring in real time, including temperature, gas pressure, oil condition, etc. When problems occur, maintenance or replacement of seals and lubricants can be carried out in time.

Summary
In high temperature environments, the key measures to ensure that the seals and lubricants of gas springs do not age include:

Select sealing materials with strong high temperature tolerance (such as fluororubber, silicone rubber, etc.) and high temperature lubricants (such as fully synthetic oil, silicone oil, etc.).

Optimize the design of the sealing structure to reduce seal failure caused by high temperature.

Use high temperature resistant additives to improve the anti-oxidation and anti-aging capabilities of lubricants.

Effective thermal management design reduces the operating temperature of the gas spring through thermal isolation and heat dissipation design.

Regular maintenance and monitoring ensure that the performance of seals and lubricants is always in the best condition.

Through these measures, the service life of the gas spring in high temperature environment can be significantly extended to ensure its stability and reliability.