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What is a dust seal? Its function?

Update:2018-12-29

The role of the dust ring is to prevent dust and particles from invading. 

DSH seals share with you that dust seals can be used in vehicles (motorcycles, automobiles, etc.), mechanical equipment (large, medium and small hydraulic machinery), construction machinery (large, medium and small construction machinery, etc.) A sealing ring made of rubber seal material designed to prevent ingress of dust and dirt.

The dust ring is generally used with a circular rubber ring of rubber texture. It is used in some mechanical equipment and hydraulic piston systems, and is installed at the mechanical connection part to prevent external dust and dirt from entering the equipment, especially in a harsh environment. 

Large excavator bulldozers require a large number of dust rings to be installed on four wheels and hydraulic systems to prevent intrusion of sand and protect machinery.