Oil Seals

1. Shaft seals: Shaft seals are the most common type of oil seal and are used to provide a seal between a rotating shaft and a stationary casing. It typically consists of an outer ring, an inner ring, and a sealing lip that is in contact with the shaft surface, forming a sealing barrier.

2. Piston seal: Piston seal is used to seal the gap between the piston and the cylinder wall to prevent liquid or gas leakage. It usually consists of a sealing ring and a sealing strip to ensure the sealing performance of the piston during movement.

3. Static sealing: Static sealing is used to seal the gap between two stationary parts. It usually consists of packing, gaskets, or O-rings, etc., to prevent liquid or gas leakage.

4. Rotary seal: Rotary seal is used to provide a seal between the rotating shaft and the stationary part. It usually consists of a rotating sealing ring and a fixed sealing ring to prevent liquid or gas leakage.

1. Sealing lip contact: The sealing lip of the oil seal is in contact with the shaft surface or housing, and through a certain pressure and friction, a sealing barrier is formed. Sealing lips are typically made of an elastomeric material that accommodates shaft surface irregularities and ensures sealing performance.

2. Lubricants: Oil seals often need to be used with lubricants to reduce friction and wear, and to provide an additional seal. The lubricant can be grease or oil and can be filled between the sealing lip and the sealing face to form a lubricating film and reduce friction.

3. Elastic restoring force: Since the sealing lip of the oil seal is made of elastic material, it has a certain restoring force. When subjected to pressure or deformation, the sealing lip is able to return to its original shape, maintaining the sealing effect.

1. Prevent leakage: Oil seals can effectively prevent the leakage of liquids, gases and solid particles. In various construction machinery, automobiles and ships and other equipment, the normal operation of hydraulic systems, lubrication systems and airtight systems depends on the sealing performance of oil seals. Good oil seals can prevent leakage and improve the efficiency and reliability of the equipment.

2. Extend the life of the equipment: The presence of oil seals can reduce the friction and wear of the equipment. By providing an effective seal, oil seals reduce wear and corrosion of equipment components by preventing dust, moisture, and other harmful substances from entering the equipment. This helps to extend the life of the equipment and reduce repair and replacement costs.