About NBR Piston Seals For Cylinder
NBR Piston Seals For Cylinder are generally designed as bi-directional seals, capable of withstanding both pressure and suction during piston movement, maintaining dynamic sealing contact between the piston and cylinder bore of a hydraulic or pneumatic system, sealing pressurized air and ensuring the normal operation of the system .
Functions
The main function of NBR Piston Seals for Cylinder is to provide sealing function for piston in hydraulic or pneumatic cylinder. The following are its main functions:
■ Sealing performance: The primary function of NBR Piston Seal for Cylinder is to ensure the sealing performance of the cylinder. They are located between the piston and cylinder barrel and prevent liquid or gas from leaking from the high-pressure side to the low-pressure side. Through effective sealing, they ensure the normal operation and efficiency of the cylinder.
■ Leakage control: Piston seals prevent liquid or gas leakage. In hydraulic systems, the quality and performance of seals directly affect the leakage rate of the system. Piston Seals for Cylinder can reduce or stop leaks, ensure proper system operation, and improve system efficiency and performance.
■ Friction Reduction: NBR Piston Seals also reduce friction between the piston and cylinder barrel. They provide lubrication and cushioning as the piston moves inside the cylinder, reducing friction losses, reducing energy losses, and extending seal and cylinder life.
■ Prevent contamination: Seals also serve to prevent outside impurities and contaminants from entering the interior of the cylinder. They effectively isolate the environment inside and outside the cylinder, prevent dust, moisture and other pollutants from affecting the system, and maintain the cleanliness and reliability of the system.
Sealing Principle
1、Static sealing: NBR Piston Seals achieve static sealing through their elastic shape and material properties when the piston is stopped or no pressure is applied. When the piston is stationary, the seal forms tight contact with the cylinder barrel wall, preventing liquid or gas from leaking from both sides of the piston.
2、Dynamic sealing: During the piston movement, the dynamic sealing principle of NBR Piston Seals for Cylinder mainly involves two key aspects:
a. Compression seal: When the piston advances into the cylinder, the NBR seal is compressed and filled into the seal cavity, forming close contact with the cylinder wall. Through this compression, the seal effectively prevents liquid or gas from leaking from the high-pressure side to the low-pressure side.
b. Sliding seal: When the piston is withdrawn from the inside of the cylinder, the NBR seal slides on the piston surface. Through the lubricating properties of its material and surface design, the seal forms a thin lubricating film and maintains close contact with the cylinder wall. This sliding seal reduces friction and risk of leakage.
3、Back Pressure Effect: NBR Piston Seal for Cylinder also utilizes the back pressure effect to enhance sealing performance. When the pressure in a hydraulic or pneumatic cylinder increases, the pressure acts on the seal, causing it to fit more closely against the piston and cylinder wall, increasing the sealing effect.
Application Scenarios
NBR (nitrile butadiene rubber) piston seals are used in a wide range of cylinder applications. NBR piston seals have excellent oil, wear and heat resistance and are suitable for many industrial and mechanical applications. The following are some common NBR piston seal application scenarios:
1、Hydraulic system: NBR piston seals are widely used in hydraulic cylinders and hydraulic systems to seal the space between the piston and the cylinder wall to prevent leakage in the hydraulic system. Hydraulic systems are commonly found in areas such as factory equipment, machine tools, and heavy machinery.
2、Automobile industry: Piston seals play an important sealing role in the cylinders of automobile engines. They are able to withstand high temperatures and pressures and ensure proper movement of the piston within the cylinder. In addition, piston seals are used in other applications such as automotive braking systems and suspension systems.
3、Pneumatic equipment: NBR piston seals are also suitable for pneumatic equipment, such as cylinders, pneumatic motors and pneumatic valves. They can provide good sealing performance and ensure the normal operation of pneumatic systems.
4、Industrial equipment: NBR piston seals are widely used in various industrial equipment, such as compressors, pumps and hydraulic presses. They can withstand high pressures and harsh operating conditions and maintain system reliability and efficiency.
FAQ
Q: What material are NBR piston seals made of?
A: The piston seal is made of Nitrile Butadiene Rubber. Nitrile rubber is a synthetic rubber that has good oil, abrasion and heat resistance and is suitable for a variety of industrial applications.
Q: Which cylinders are NBR piston seals suitable for?
A: NBR piston seals are suitable for various cylinders, including hydraulic cylinders in hydraulic systems, hydraulic machinery, hydraulic motors, etc. They can be used in various industrial fields such as automobile manufacturing, machine manufacturing, aerospace, construction, etc.
Q: What are the main features of NBR piston seals?
A: NBR piston sealing ring has the following main features:
- Good oil resistance: able to withstand a variety of hydraulic oils and liquid media to prevent leakage.
- Good wear resistance: able to be used under high pressure and high friction conditions for a long time without damage.
- Good heat resistance: able to work within a certain temperature range and adapt to different working environments.
- Simple installation and replacement: Easy to install and replace, improving maintenance efficiency.
Q: What is the lifespan of piston seals?
A: The life of NBR piston seals depends on many factors, including working conditions, temperature, pressure, lubrication conditions, etc. Generally speaking, under normal use and maintenance conditions, the service life of NBR piston seals can reach thousands to tens of thousands of working hours.
Q: How to maintain and maintain NBR piston seals?
A: The key to maintaining and maintaining NBR piston seals is to keep them clean and lubricated. Dirt and impurities around the seals should be removed regularly and appropriate lubricants should be used to reduce friction and wear. Additionally, avoid using incompatible liquid media and chemicals to prevent seal damage.
