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Analysis of the causes of gear pump seal leakage

1、The outer diameter of the seal is too loose with the aperture of the seal seat. 2、The gland is installed incorrectly, blocking the drainage holes on the front and rear covers. 3、The direction of the pump body is reversed, so that the oil pressure port is connected to the unloading groove, f... Read More

Can an O-ring be repaired if it breaks?

The majority of O-ring fractures occur in overlapped seals. O-rings are a type of surface rubber seal with a round cross-section, the cross-section is O-shaped, so it is called an O-ring, a seal widely used in hydraulic and pneumatic sealing systems. When the material of the seal is brittle, howe... Read More

Research on stability control of position servo system based on multi-degree-of-freedom pneumatic manipulator

 Based on the shortcomings of the traditional position servo control system for fragile sheet metal manipulators, a pneumatic palletizing manipulator and position servo stability control system based on Cartesian coordinates is designed. Firstly, the basic structure of the Cartesian coordinate pa... Read More

Relationship between bypass leakage and the minimum steady angular velocity of oscillating vane motor

 The internal leakage of the oscillating vane motor directly affects its output angular velocity; the transfer function of the oscillating motor with bypass leakage channel is established. By analysing the influence of the parameters of the bypass leakage channel on the minimum steady motor speed... Read More

What is the knowledge of ultra-high pressure seal popular

What is the knowledge of ultra-high pressure seal popular Ultra-high pressure seal is also divided into static and dynamic seal, if the hydraulic system is divided into pipeline seal and hydraulic components seal. Hydraulic components in common hydraulic pumps, hydraulic valves, hydraulic cylinde... Read More

Application knowledge of reciprocating motion seals

Application knowledge of reciprocating motion seals Reciprocating motion seals are one of the most common sealing requirements in hydraulic rotation and pneumatic components and systems. Reciprocating motion seals are used on power cylinder pistons and cylinder bodies, piston intervention cylinde... Read More

Reasons affecting the use of Y-seals

Reasons affecting the use of Y-seals Y-type seal is also a classification of seal ring, because its cross-sectional shape is Y-shaped, so it is called Y-type seal. It is a typical lip-shaped seal, which is used in a large number of reciprocating devices and has a longer life than O-ring. Y-type s... Read More

A brief history of the development of sealing engineering technology in China（ II）

A brief history of the development of sealing engineering technology in China（ II） Third, the consolidation and development of sealing engineering technology stage The working pressure of the hydraulic system of the main products of domestic construction machinery has reached 16-40MPa, and the ... Read More

A brief history of the development of China’s sealing engineering technology (I)

A brief history of the development of China’s sealing engineering technology (I) The history of the development of rubber and plastic seals in China is very short, when the country was founded, the rubber and plastic sealing industry is simply a blank. The real golden age of China’s r... Read More

How to check and repair polyurethane seals with excellent properties?

How to check and repair polyurethane seals with excellent properties? Polyurethane seals are made from rubber with the following excellent properties: Polyurethane seals have excellent elasticity, wear resistance, oil resistance, cold resistance and high tensile strength, but water resistance, es... Read More

Installation of the hydraulic U-ring for shafts

Installation of the hydraulic U-ring for shafts The hydraulic U-ring seal for shafts is not a completely oil-sealed condition, as the reciprocating movement of the piston rod always brings out oil. However, this leakage must be as small as possible. On the contrary, if the piston rod reciprocatin... Read More

Cylinder structure of the friction ring and seal ring seal characteristics

Cylinder structure of the friction ring and seal ring seal characteristics Friction ring seal, it relies on the friction ring on the piston (nylon or other polymer materials made) in the O-ring elasticity under the role of the cylinder wall to prevent leakage. This material is more effective, fri... Read More
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