Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of engine cylinder head seals in China, also supports customized service. Please feel free to buy high quality engine cylinder head seals for sale here from our factory.
Engine cylinder head seals Description
Definition and Role
The engine cylinder head seals are sealing elements between the engine cylinder head and the cylinder block. Its main function is to prevent the leakage of engine oil and coolant and ensure the normal operation of the engine in a high-temperature and high-pressure environment. Through its good elasticity and sealing properties, rubber seals can effectively fill the gaps between components and prevent the leakage of liquids or gases.
| Material | HNBR | FKM | EPDM | SI |
| Temperature | -40℃~150℃ | -40℃~240℃ | -40℃~150℃ | -60℃~250℃ |
| hardness | 70 Shore A | 70 Shore A | 70 Shore A | 60 Shore A |
Material properties
Nitrile rubber (NBR): suitable for petroleum hydraulic oil, ethylene glycol hydraulic oil, dimethyl lubricating oil, gasoline, water, and other media, with good oil resistance and wear resistance, the use temperature range is -40 °C to 120 °C.
Fluoroelastomer (FKM): It has excellent high temperature and chemical resistance, and is suitable for diesel engines, fuel systems, etc., with a service temperature range of -20°C to 250°C.
Hydrogenated nitrile butadiene rubber (HNBR): It has strong corrosion resistance, tear resistance and compression set resistance, ozone resistance, sunlight resistance, and weather resistance.
Fields of application
Engine system: It is used to seal the cylinder head, valve, and other parts to ensure the tightness and stability of the high-pressure working environment inside the engine.
Other automotive systems: such as transmission systems, braking systems, etc., rubber seals also play an important role in these systems to prevent the leakage of lubricating oil and other fluids.
Advantage
Good sealing performance: It can effectively prevent the leakage of liquid or gas and maintain the working stability of the system.
High temperature and corrosion resistance: Rubber seals maintain stable physical and chemical properties in the environment of high engine temperatures and chemical attacks.
Good elasticity and wear resistance: It can maintain good elasticity and wear resistance under high frequency, high pressure, and high-speed friction.
Cost-effective: Rubber seals are less expensive than metal seals or other materials.
Selection and maintenance considerations
Material selection: Select the appropriate rubber material according to the specific use environment and medium to ensure the performance and service life of the sealing ring.
Installation & Maintenance: Proper installation methods and regular maintenance checks can prolong the seal's service life and avoid engine failure caused by seal failure.
Rubber seals are widely and important in automotive engines, and their superior sealing performance and durability provide automotive manufacturers with a reliable solution to ensure the safety and reliability of vehicles in a variety of operating environments.
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