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A small part used between a connector and a nut. Generally, the flat metal ring is mainly used, regardless of its small size, to protect the surface of the connector from scratch by the nut, and to disperse the pressure of the nut on the connector.

Copper asbestos pad

Copper asbestos pad has the characteristics of high pressure resistance and high temperature resistance. It is used for engine cylinder gasket. Before using the copper asbestos pad, first remove the dirt or sand dust on the joint surface. Note that the side of its copper flange should face the side of the cylinder head to prevent air leakage. Do not fold it hard during installation, and keep it intact and elastic enough.

Paper pad

It has two uses. First, increase the sealing performance to prevent oil leakage; Second, adjust the clearance between components. The axial clearance between the crankshaft bush and the crankshaft is also achieved by adjusting the paper pad between the side cover at the flywheel end and the engine body. If the paper pad is damaged, it shall be replaced in time to prevent oil leakage.

Flat pad

Its function is to evenly distribute the pressure of the nut on the pressure parts through the flat pad, and protect the bolt thread and the surface of the connector at the same time. Generally, thin metal shells are fixed with metal flat pads.

Aluminum flat pad

The aluminum flat gasket has certain toughness, which can be used at the connection of general diesel and engine oil pipelines. Before installation, check whether there are dents or cracks on the plane, otherwise air will be sucked into the oil leakage pipe, which will not only waste the oil, but also burn the bearing and hold the shaft due to insufficient oil supply.

Copper flat pad

The copper flat gasket is generally made of red copper, which is mostly used in places with high pressure, such as the gasket of fuel injection nozzle.

Spring washer

The spring washer is used for the connection of bolts to prevent the bolts and nuts from loosening due to vibration. In particular, spring washer shall be used for bolts that are not easy to see and operate.

Asbestos pad

The asbestos pad has the characteristics of high temperature resistance, so the components using it are high-temperature parts, such as between the exhaust pipe and the cylinder head. The role of the asbestos pad is irreplaceable.

Rubber pad

It should be noted that the oil resistant rubber pad can replace the non oil resistant rubber pad, while the non oil resistant rubber pad cannot replace the oil resistant rubber pad. If it is found that it hardens and loses elasticity, it should be replaced in time to avoid the wear of components.

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