RONDELLE SPÉCIALE

Special Washers Are Classified by Application Industry 

Automobile special washer: used in automobile engine, transmission, braking system and other parts. For example, the engine cylinder gasket is a special washer, which not only bears high temperature and high pressure, but also prevents the leakage of coolant, engine oil and other liquids. It is usually made of multi-layer metals or composite materials.

Electronic washer: used in electronic equipment, such as the heat-conducting washer under the radiator of CPU. Its main function is to fill the tiny gap between the radiator and CPU to ensure good heat conduction. It is generally made of materials such as silica gel with high thermal conductivity.

Special washer for aerospace: used in key parts such as aircraft engine, fuselage structure and landing gear. These gaskets should meet strict quality and performance standards, such as being able to withstand extreme temperature changes, high vibration and high vacuum environment. For example, the sealing washer used in aircraft hydraulic system needs to have excellent sealing performance and aviation fuel corrosion resistance.

Special Washers Are Classified According to Functional Characteristics

Special washer for sealing: mainly used to prevent liquid or gas leakage. For example, the rubber sealing washer used in pipeline connection has good elasticity and tightness, and rubber with different hardness and material can be selected according to the pressure and medium in the pipeline. In chemical pipelines, fluororubber sealing washer may be used because it can resist the corrosion of many chemicals.

Special washer for shock absorption: used to reduce vibration and impact. In the building isolation system, there is a kind of rubber-steel composite damping washer, which uses the elasticity of rubber and the rigidity of steel plate to effectively absorb and disperse energy and protect the structural safety of buildings when earthquakes and other vibrations occur.

Conductive gasket: used to ensure the conductivity of electrical connection. In the grounding connection or electromagnetic shielding connection of electronic equipment, conductive washers made of copper or copper alloy are used, which can provide low-resistance electrical paths and prevent electromagnetic interference.

Maintenance and Replacement Strategy of Special Washer 

Regular inspection: For the equipment using special washers, a regular inspection system shall be established. In automobile engine maintenance, the appearance of the engine cylinder washer should be checked every time the oil is changed to see if there are signs of coolant or oil leakage. If oil stains or water stains are found around the cylinder washer, it may indicate that there is a problem with the cylinder washer.

In electronic equipment, regularly check whether the thermal conductive washer is aging or deformed, because the aging of the thermal conductive washer may lead to poor heat dissipation of CPU and affect the performance of the equipment.

Fault judgment: when the equipment fails, it is necessary to accurately judge whether it is a problem with the special washer. For example, in case of liquid leakage in the pipeline system, besides checking whether the pipeline itself is damaged, it is also important to check whether the sealing washer is invalid. For equipment with damping function, if abnormal vibration occurs, it is necessary to consider whether the damping washer has lost its damping effect.

Replacement principle: Once it is determined that there is a problem with the special washer, it should be replaced in time. When replacing the automobile engine cylinder washer, the products with the same specifications and performance as the original cylinder gasket should be used and installed according to strict installation procedures.

For the heat conductive washer of electronic equipment, attention should be paid to cleaning the contact surface when replacing it to ensure that the new washer is in good contact with CPU and radiator. When replacing special washers for aerospace, strict operating procedures should be followed, because these washers are very important for the safety of equipment.