Hydraulic hose connectors are key components that connect hoses and equipment in hydraulic systems, and their sealing performance directly affects the safety and reliability of the system. According to the different sealing forms, hydraulic hose connectors are mainly divided into the following types: O-ring seal, cone seal, plane seal and ferrule seal. Each sealing form has its own unique process characteristics and is suitable for different hydraulic working conditions.

 

 1. O-ring seal

O-ring seal is the most common sealing form in hydraulic hose connectors, and the seal is achieved through the elastic deformation of the O-ring. The connector usually consists of a connector body, a nut and an O-ring. When the nut is tightened, the O-ring is compressed to fill the gap between the connector and the hose to form a seal.

Process characteristics:

• Excellent sealing performance: The O-ring has good elasticity and can effectively prevent the leakage of high-pressure oil.
• Easy installation: Only the nut needs to be tightened to complete the installation, which is suitable for occasions where frequent disassembly is required.
• Vibration resistance: The O-ring can absorb vibration and is suitable for high-vibration environments.
• Wide application range: It can be used for a variety of hydraulic media and temperature ranges.

 

 2. Conical seal

The conical seal achieves sealing through the conical contact between the connector and the hose. The connector usually adopts a 24° conical design or a 74° conical design, and the close fit between the conical surfaces prevents leakage.

Process characteristics:

• Good high-pressure sealing performance: The conical design can withstand high system pressure and the sealing effect is stable.
• Compact structure: The conical seal connector is small in size and suitable for occasions with limited space.
• High temperature resistance: Conical seals are usually made of metal materials and can withstand high temperature environments.
• High installation accuracy requirements**: Conical seals require high processing accuracy and installation alignment.

 

 3. Planar seals

The plane seal achieves sealing through the plane contact between the connector end face and the hose or equipment end face, and is usually used with a gasket or a sealing ring.

Process characteristics:

• Reliable sealing: The plane seal can effectively prevent leakage through the high pressure applied by the bolts.
• Strong bearing capacity: Suitable for hydraulic systems with large flow and high pressure.
• Complex installation: Requires multiple bolts to tighten, suitable for fixed installation occasions.
• Corrosion resistance: Flat sealing joints are usually made of corrosion-resistant materials such as stainless steel.

 

 4. Ferrule seal

Flange seals fasten the hose and the joint together through a ferrule. The ferrule deforms when tightened to form a tight connection with the hose and the joint.

Process characteristics:

• Quick installation: Ferrule seals are easy to install and suitable for quick installation occasions.
• Strong adaptability: Suitable for hoses of different diameters.
• Vibration resistance: Ferrules are fastened by mechanical force and can resist vibration and impact.
• Low cost: Simple structure, low manufacturing cost, suitable for large-scale use.

 

In summary, hydraulic hose joints have various sealing forms. O-ring seals are suitable for medium and high pressure systems, conical seals are suitable for high pressure and high temperature environments, flat seals are suitable for large flow and high pressure occasions, and ferrule seals are suitable for low pressure and quick installation. Selecting the appropriate sealing form according to specific working conditions can effectively improve the sealing performance and service life of the hydraulic system.