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Precautions for seal installation

Some problems are often encountered during the installation of seals. Let's introduce three points that should be paid special attention to when installing hydraulic seals. 1. Do not damage the sealing surface or sealing line on the surface of the hydraulic seal The sealing performance of hydraulic seals depends on the upper and lower end faces. The sealing performance of hydraulic seals depends on the lip line associated with the hole or shaft. These parts are made of soft, high temperature resistant, corrosion resistant and aging resistant materials. Graphite, rubber, plastics and fibers are made of special materials that are easily damaged. Therefore, special protection and maintenance are required during handling, installation and storage. Once damaged, it usually leaves a great hidden danger to the sealing part. 2. Do not forcibly install the seal Some seals are placed in the grooved stuffing box. At this time, they need to be installed tightly. During installation, it shall not be rough or rough. Forced installation will destroy the original precast structure of the seal, just as it will destroy the precast concrete. Filling in the required parts will inevitably lead to disaster. The installation of this seal must be very careful and the insertion must be carried out step by step. 3. Pay attention to the balance and symmetry of seals during installation Place the seal next to the effective sealing surface (or lip line). After opening and using the system, further observation and later maintenance of tightening seals are required to prevent system damage due to micro leakage caused by working condition change (such as pressurization) during system operation. The above are three precautions for seal installation, which we must pay attention to during installation.

05-25 

Application scope and advantages of mining sealing materials

Application scope and advantages of mining sealing materials mining sealing materials are mainly used in underground coal mines. Its application scope is: 1. Control ventilation direction or strong temporary tightness; 2. Goaf and harmful gas are closed in coal cracks; 3. Fast sealing of fire zone firewall with flame retardant materials; 4. Other leakage, leakage crack, another closed upper and lower corner. 2、 Working principle of fast sealing material Fast sealing, flame retarding and antistatic, the main principle of operation is to put liquid synthetic materials in two containers. When used, they are automatically proportionally mixed under pressure and catalyst, spray out with a spray gun, penetrate into the fissures at appropriate temperature, expand and expand in fissures, and form rigid foam compounds attached to the surface of the object, thereby playing a sealing role. 3、 Main advantages of mining sealing materials: 1. Light weight, easy to carry and transport, rapid closure of materials, small volume, packaging 11kg, packaging weight 18-20kg. 2. Easy to operate, without any power source or other technical auxiliary teaching facilities, one person can operate, open and use anytime, anywhere. Low labor relationship intensity and high efficiency. 3. Short time, fast closing speed and skilled operation can solve the problem of airtight closed wall in five minutes. The air leakage rate of airtight wall is very important to solve, especially in disaster relief, which can present the advantages of fast, short time and fast speed of airtight materials. Good sealing performance, spray at the target time is liquid state, can well penetrate into the target object, rising foam gap. The sprayer quickly closes over traditional sealing materials.

05-25 

Introduction of dust ring

1、 What is a dust ring? The reciprocating seal installed on the piston rod to prevent external dust from mixing into the hydraulic cylinder is the dust ring. 2、 What are the precautions for using the dust ring? 1. No matter what kind of dust ring it is, it can not bear pressure. In addition, the dust ring does not have sealing function. Its attention is to prevent dust (and it also needs to be used together with other seals). 2. Avoid cutting caused by the contact between the lip of the dust ring and the opposite edge of the wrench or the piston rod hole. 3、 What is the main function of the dust ring? The dust ring is mainly used on the hydraulic and pneumatic piston rod, so its main function is to remove the dust attached to the external surface of the piston cylinder block and prevent sand, water and pollutants from entering the sealed cylinder block. In fact, most of the dust rings we use are made of rubber materials. Therefore, the dust ring is characterized by dry friction (which requires rubber materials to have particularly good wear resistance and relatively low compression set performance). 4、 What are the product types of dust rings? With the change and development of science and technology, the product types of dust rings have begun to be enriched. According to the function, sealing mechanism, characteristics and structural type, the dust ring can be divided into many types. 1. According to the structural form, the dust ring can be divided into rectangular dust seal ring, J-shaped dust seal ring, chamfered dust seal ring, foot shaped dust seal ring and triangular dust seal ring. 2. According to the function, the dust ring can be divided into single acting dust seal ring and double acting dust seal ring. 3. According to whether there is a skeleton or not, the dust ring can be divided into non skeleton dust seal ring and skeleton dust seal ring. 4. According to whether it is combined or not, the dust ring can be divided into single dust seal ring and combined dust seal ring.

05-25 

Applicable environment of dust ring

In the selection of material, dust ring structure, important characteristics of external working medium, dirt composition, group number, particle size, particle strength, wear resistance, etc., the selection of working medium inside the dust seal is also affected. Because the corrosive material is kicked by the working medium permeable membrane, the main seal may damage the dust seal. According to the characteristics of media in the external management work environment of the enterprise. The dust ring can be divided into three categories: light pollution, medium pollution and serious impact pollution. The economic conditions for the use of dust rings in domestic machinery, machining and forming workshops and marine machinery are mild pollution. This kind of pollution is equivalent to the general pollution of production plants and workshops. Under these historical conditions, group I and II dust rings are mainly used for development. For example, the service conditions of dust rings in construction machinery, automobile, excavator, casting and forging workshops are class II pollution, which is caused by building derived pollutants, sand, cement, coagulation, various soils, peat, abrasive slurry, dirt, etc. Pollutants from roads, sand containing fine stones, etc. Dirt in the foundry, such as iron filings, etc. Group II and III dust rings are used for these occasions. For example, the working conditions of dust rings used in open-pit mines, mines, mines, smelting workshops, chemical production of corrosive media and corrosive gases are seriously polluted. This type of pollution refers to dirt particles with different particle size, hardness and chemical corrosivity, including stone particles and other mineral particles, coal dust, slag, chemical products and waste. It is usually used in the third group, so it is sometimes used in the second group of dust rings.

05-25 

Top Ten Factors for Rubber O-Ring Leakage

1. The quality of the rubber o-ring is unqualified. 2. The rubber o-ring is seriously aging. 3. The installation of the rubber o-ring is unqualified. 4. The formula of the rubber o-ring is unqualified.

05-25 

103, 1st floor, building 7, Ailian Industrial Zone, Wulian Xieping, Longcheng street, Longgang District, Shenzhen

contact information:
0755-28962355 / fengbo@delongsz.cn

Link: Shenzhen Delong Xingye seal ring manufacturer - high temperature seal ring - O-ring - Delong Xingye rubber seal ring

phone 13902942483
after-sale
telephone 0755-28962355
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