The function and application of rubber product seals

Rubber product seals are a common sealing material that forms a seal between mechanical equipment or components to prevent the leakage or entry of liquids, gases, or solid particles. The main functions and applications of rubber product seals are as follows: 1. Sealing function: Rubber product seals can fill and level the gaps between equipment or components, forming a seal to prevent the leakage of liquids, gases, or solid particles. It can prevent the loss of media, external pollution, and entry, ensuring the normal operation of equipment and the safety of the working environment. 2. Dust prevention function: Rubber product seals can prevent dust, particles, etc. from entering the interior of the equipment, maintaining its cleanliness and normal operation. In some special environments, such as industrial production and laboratories, rubber seals can play a role in dust and pollution prevention, improving the reliability and service life of equipment. 3. Cushioning and shock-absorbing effect: Rubber product seals have good elasticity and flexibility, which can play a buffering and shock-absorbing role during equipment operation. It can absorb mechanical vibrations and impacts, reduce equipment noise and vibration, and improve equipment stability and safety. 4. Application areas: Rubber product seals are widely used in various fields, including automotive, mechanical, chemical, electronic, medical and other industries. Common applications include automotive engine seals, pipeline connection seals, valve seals, instrument seals, electronic product seals, etc. Rubber seals have characteristics such as high temperature resistance, corrosion resistance, and wear resistance, making them suitable for various environments and working conditions.

31 December-2023

What is the principle of size fit between the sealing ring and the sealing groove?

The size fit between the sealing ring and the sealing groove should follow the following principles: 1. Temperature and pressure: The size matching of the sealing ring and sealing groove should take into account the required temperature and pressure conditions. In high temperature and high pressure environments, the sealing ring and sealing groove should use a tight fit to ensure effective sealing performance. 2. Elasticity and deformation: Sealing rings are usually made of elastic materials, and their size matching should consider the elasticity and deformation characteristics of the material. The sealing ring should be able to adapt to changes in the shape of the sealing groove and produce appropriate deformation under pressure to achieve sealing. 3. Wear and wear compensation: The size matching of the sealing ring and sealing groove should consider wear and wear compensation. After long-term use, the sealing ring and sealing groove may experience wear, so a certain amount of wear compensation space should be reserved to ensure the durability of the sealing performance. 4. Installation and disassembly: The size matching of the sealing ring and sealing groove should consider the convenience of installation and disassembly. The sealing ring should be able to be easily installed into the sealing groove and easily disassembled when needed. 5. Material selection: The size matching of the sealing ring and sealing groove should consider the expansion and contraction coefficients of the material. The expansion and contraction coefficients of different materials are different, so the size matching of the sealing ring and sealing groove should be able to maintain appropriate sealing performance when the temperature changes. The size fit between the sealing ring and sealing groove should comprehensively consider factors such as temperature, pressure, elasticity, deformation, wear, installation, and disassembly to ensure effective sealing performance and reliable use. The specific size matching should be selected and designed according to the specific application requirements and material characteristics. Dongguan Zhongxing Shun Sealing Products Factory is located in Dongguan City, Guangdong Province. Founded in 1999, it is a comprehensive sealing enterprise specializing in the design, research and development, production, agency, warehousing, and sales of seals and sealing rings. It is the production location of the KVK sealing brand and has seven companies in three fields. Friends who want to learn about seals can come to the company to negotiate and contact us.

23 December-2023

How to choose the right seal?

The correct selection of seals requires consideration of the following aspects: 1. Work environment The working environment of seals includes factors such as temperature, pressure, and medium, and different working environments require different seal materials and structural designs. For example, working environments such as high temperature, high pressure, and corrosive media require the selection of sealing materials that are resistant to high temperature and corrosion, such as fluororubber, silicone rubber, PTFE, etc. 2. Sealing performance requirements The sealing performance of seals includes sealing effect, sealing pressure, sealing life, and other aspects. Different application scenarios require different sealing performance requirements, such as high pressure, high temperature, high speed, etc. It is necessary to choose sealing components with higher sealing performance. 3. Equipment structure and dimensions The selection of seals also needs to consider the structure and size of the equipment. Different device structures and sizes require different shapes and sizes of seals, such as circular, square, oval, and other seals of different shapes, as well as seals of different sizes. 4. Material quality and cost The material quality and cost of seals are also factors that need to be considered when selecting seals. Seals with good material quality usually have better sealing performance and longer service life, but also higher costs. Therefore, it is necessary to strike a balance between material quality and cost, and choose sealing components with higher cost-effectiveness. The selection of seals requires consideration of factors such as working environment, sealing performance requirements, equipment structure and size, material quality and cost, in order to select the most suitable seal. At the same time, attention should be paid to the installation and maintenance of seals to ensure their normal operation and extend their service life.

16 December-2023

Which material is better for oil seals?

Most of the oil seals on the market now are nitrile rubber and fluororubber, so what is the difference between the two different materials of oil seals? Fluorine rubber has excellent high-temperature resistance, oxidation resistance, oil resistance, corrosion resistance, and atmospheric aging resistance, as well as high chemical stability. It is currently one of the best media resistant elastomers among all elastomers. Due to its characteristics of high temperature resistance, oil resistance, high vacuum resistance, acid and alkali resistance, and resistance to various chemicals, fluororubber has been applied in modern aviation (missiles, rockets, space navigation, ships, atomic energy, and other cutting-edge technologies) and is an irreplaceable key material in the national defense industry, as well as in the fields of automobiles, shipbuilding, chemistry, petroleum, telecommunications, instruments, machinery, and other civil industries. Fluorine rubber oil seal, when used for engine sealing, can work for a long time at 200 ℃ -250 ℃; When used in the chemical industry, it can seal inorganic acids and organic solvents; When used in deep well oil production equipment, it can withstand harsh working conditions of 149 ℃ and 420 atmospheres; When used for sealing superheated steam, it can work for a long time in a steam medium of 160-170 ℃. Nitrile rubber (NBR) has excellent oil resistance, high wear resistance, good heat resistance, strong adhesion, good water resistance, air tightness, and excellent bonding performance. Its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity. So the manufactured oil seal can be used in air at 120 ℃ or oil at 150 ℃ for a long time, but it cannot achieve the expected sealing effect at high temperatures. Nitrile rubber has become the standard elastomer for oil resistant rubber products due to its excellent oil resistance, heat resistance, and physical and mechanical properties. The main purpose of Z is to produce oil resistant rubber hoses and flame retardant conveyor belts, which account for about 50% of the total consumption, followed by sealing products. For example, O-rings, oil seals, cups, diaphragms, valves, corrugated pipes, rubber hoses, seals, foam, etc., are also used for making rubber plates and wear-resistant parts. Although nitrile rubber has excellent physical and mechanical properties and processing properties, its performance is inferior to that of fluororubber when used in acidic gasoline and high-temperature (150 ℃) environments for a long time. Oil seal is a common term for general seals, which simply refers to the sealing of lubricating oil. It is a mechanical component used to seal oil (oil is a common liquid substance in the transmission system), which isolates the components that need lubrication in the transmission components from the output components, so as not to let the lubricating oil leak. As a component of mechanical seals, oil seals can be divided into various types based on their sealing function, characteristics, structural type, working state, and sealing mechanism. The material performance of oil seals made of acrylic rubber and fluororubber is different.

18 November-2023

What is a car oil seal

Vehicle oil seals may be affected by wear and aging during use, leading to a decrease in sealing performance. Therefore, regular inspection and replacement of vehicle oil seals is an important measure to maintain normal vehicle operation and extend the lifespan of components. If there are signs of liquid leakage in the vehicle, especially lubricating oil leakage, the relevant oil seals should be checked and replaced in a timely manner. Vehicle oil seal is a sealing device used in automobiles and other motor vehicles to prevent the leakage of lubricating oil or other liquids from the moving parts of the vehicle. It is usually installed in parts such as the engine, transmission, wheel hub, transmission shaft, etc., playing a sealing and leak proof role. Vehicle oil seals are usually made of elastic materials, such as rubber or polyurethane. It has a soft characteristic that can adapt to the rotation or oscillation of moving parts and maintain close contact with them. Vehicle oil seals typically consist of an inner ring, an outer ring, and a sealing lip. The inner ring is the part that comes into direct contact with the moving parts, usually made of metal and has a certain fit gap with the moving parts. The outer ring is fixed to the vehicle's components, such as the engine housing or transmission shaft housing. The sealing lip is the rubber or polyurethane part that connects the inner and outer rings, which is in close contact with the moving parts and prevents liquid leakage. The main function of vehicle oil seals is to prevent the leakage of lubricating oil or other liquids from the moving parts of the vehicle. It can maintain normal circulation of lubricating oil, ensuring lubrication and cooling of moving parts. At the same time, it can also prevent dust, moisture, and other impurities from entering the moving parts, protecting the normal operation of the parts.

14 October-2023