China Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch Company News

Pre - installation Checks Verify Components: Before installation, carefully check that all components of the mechanical seal are complete and in good condition. Refer to the assembly drawing to ensure that there are no missing or damaged parts. Examine the sealing surfaces of the friction pairs, sealing rings, etc. for any signs of damage, such as scratches or chips. Also, check the surfaces of the shaft or shaft sleeve, as well as the flanges that come into contact with packing and O - rings for any damage. Check Installation Dimensions: Ensure that the relevant dimensions of the equipment where the mechanical seal is installed meet the requirements. For example, the shaft run - out should be no greater than 0.06 mm at the location of the dynamic ring sealing ring, and the axial run - out of the shaft should not exceed ±0.5 mm. The concentricity tolerance of the gland (static ring seat) with respect to the shaft centerline is 0.05 mm, and the perpendicularity tolerance of the plane in contact with the gasket to the centerline is 0.03 - 0.05 mm.   Installation Process Avoid Installation Deviation: When tightening the gland, it should be done after the coupling is aligned. The bolts should be tightened evenly to prevent the gland end face from being skewed. Use a feeler gauge to check each point, and the error should not be greater than 0.05 mm. Check the fit clearance (i.e., concentricity) between the gland and the shaft or shaft sleeve outer diameter. It should be uniform all around, and the allowable error for each point checked with a feeler gauge is no greater than 0.01 mm. Proper Spring Compression: The spring compression should be carried out according to the specified value, and there should be no excessive or insufficient compression. The allowable error is 2.00 mm. Excessive compression will increase the face pressure and accelerate the wear of the sealing face, while insufficient compression will result in insufficient pressure to achieve a sealing effect. Ensure Free Movement of the Dynamic Ring: After installing the dynamic ring, when it is pressed against the spring, it should be able to rebound automatically. Installation of Sealing Rings: When installing the dynamic ring sealing ring on the shaft sleeve end and the static ring sealing ring on the gland (or housing) end, ensure that the ends are chamfered and smoothed. During the installation process, be careful not to damage the sealing rings and avoid contact with sharp objects.   Post - installation Checks Inspect Alignment and Clearance: After installation, re - check the alignment of the coupling and the clearance between the mechanical seal and the shaft or housing. Ensure that all values are within the specified range. Check for Leakage: Conduct a static pressure test on the mechanical seal before starting the equipment. Check if there is any leakage at the mechanical seal. If there is significant leakage, identify the cause and take measures to eliminate it. If the problem persists, disassemble and inspect the mechanical seal, and then reinstall it. Jiaxing Burgmann Mechanical Seal Co., Ltd Email: doris@mechanicalseal.com.cn Skype: kathysunlin Fax: 86-573-84072317 Mob: 86-15381220188 WhatsApp: 8615958372402 Website: www.industrial-mechanicalseals.com Add: A-5 Wanyangzhongchuangcheng, Ganyao Town, Jiashan county, Jiaxing, Zhejiang, China. 314107  

FFKM stands for perfluoroelastomer. Here is an introduction About it: Definition and Composition FFKM is a special kind of perfluorinated polymer rubber. It is an elastic synthetic material made up of perfluorinated polymers, in which all hydrogen atoms in the polymer chain are replaced by fluorine atoms. Its composition mainly includes perfluorinated monomers like trifluoroethylene and tetrafluoroethylene, cross-linking agents to improve mechanical and structural stability, and fillers and additives such as carbon black and silica to adjust physical properties. Properties - Outstanding Chemical Resistance: FFKM can resist concentrated sulfuric acid, nitric acid, hydrochloric acid and other strong acids, strong alkalis like potassium hydroxide and sodium hydroxide solutions, and organic solvents including ketones, ethers, esters and aromatic hydrocarbons. It also shows high resistance to oxidizing agents such as hydrogen peroxide and ozone. - High Temperature Stability: FFKM can maintain its chemical and physical properties in extremely high or low temperatures, tolerating temperatures up to over 327 °C. It has excellent heat aging resistance, low volatility at high temperatures and can maintain good sealing performance. Its coefficient of thermal expansion is similar to that of many metals and engineering plastics. - Excellent Compression Resilience: FFKM has high elasticity, low compression deformation, high resilience and low compression set, which means it can quickly recover its original shape after being compressed or deformed, and maintain its shape and dimensional stability even under high pressure. Applications FFKM is widely used in various fields. In the semiconductor industry, its high cleanliness and resistance to plasma make it an ideal material for sealing. In the petrochemical industry, it can withstand high temperatures and corrosive media in oil and gas extraction and refining. In the automotive industry, it is used in engine sealing and fuel systems. It is also used in the aerospace, military, pharmaceutical and nuclear industries.

Here are the key factors to consider when choosing a mechanical seal: Operating Conditions - Temperature: For temperatures below -20°C, select seals with low-temperature-resistant elastomers like polytetrafluoroethylene (PTFE). In the range of 200 - 300°C, metal bellows seals with high-temperature-resistant materials are preferable. - Pressure: In applications with pressures up to 10 bar, simple single mechanical seals are usually sufficient. For pressures above 50 bar, double mechanical seals or those with reinforced structures are more suitable. - Medium: For corrosive media like acids and alkalis, choose seals made of materials like Hastelloy or ceramic. For abrasive media such as slurries, tungsten carbide seal faces are more appropriate. Equipment Parameters - Shaft Diameter and Rotational Speed: If the shaft diameter is large, ensure the mechanical seal has a suitable size and structure. High rotational speeds, e.g., above 3000 rpm, require seals with good dynamic balance and low friction, such as those with hydrodynamic or gas-lubricated faces. - Type of Equipment: Pumps handling clean liquids can use single spring mechanical seals. Pumps handling toxic or flammable media should have double mechanical seals with a barrier fluid system. Seal Performance and Material - Leakage Rate: For applications requiring strict leakage control, such as in the pharmaceutical and food industries, choose mechanical seals with a low leakage rate, usually in the range of 10⁻⁵ to 10⁻⁶ m³/s. - Seal Face Materials: Carbon-graphite is suitable for general applications due to its good self-lubrication and low cost. Silicon nitride is preferred for high-speed and high-pressure applications because of its high strength and wear resistance. - Elastomer Materials: In an oil environment, NBR is commonly used. In chemical environments with a variety of chemicals, FKM is more suitable due to its excellent chemical resistance. Cost and Service Life - Initial Cost: Compare the prices of different brands and types of mechanical seals. Generally, high-performance seals are more expensive but offer better reliability and longer service life. - Service Life: Consider the expected service life of the mechanical seal. Some seals may need to be replaced every few months in harsh environments, while others can last for several years in mild conditions. Choose a seal that balances cost and service life according to your specific needs.   JIAXING BURGMANN MECHANICAL SEAL CO., LTD Contact person: Doris Sun Phone No: 8615381220188 Skype: kathysunlin  

Installing a single face cartridge seal typically involves the following steps: 1. **Preparation:** - Ensure the shaft and seal chamber are clean and free from any debris or contaminants. - Inspect the seal components, including the seal faces, O-rings, and springs, for any signs of damage or wear. Replace any damaged parts. 2. **Positioning:** - Slide the cartridge seal onto the shaft, ensuring that it aligns correctly with the seal chamber. 3. **Securing the Seal:** - Use any provided mounting hardware or clamps to secure the cartridge seal in place within the seal chamber. Follow the manufacturer's instructions for proper installation. 4. **Tightening Set Screws:** - If applicable, tighten any set screws or locking mechanisms to secure the seal in place. Be careful not to over-tighten, as this could damage the seal. 5. **Connection:** - If the seal has any fluid or electrical connections, such as flush ports or thermocouples, ensure they are properly connected according to the manufacturer's guidelines. 6. **Alignment:** - Double-check the alignment of the seal to ensure it is properly seated and aligned with the shaft and seal chamber. 7. **Testing:** - Conduct a leakage test to ensure the seal is functioning correctly and effectively preventing fluid leakage. Follow the manufacturer's recommendations for testing procedures. 8. **Final Checks:** - Verify that all connections are secure and that there are no leaks. Check for proper alignment and operation. 9. **Monitoring:** - Regularly monitor the performance of the cartridge seal during operation to detect any signs of leakage, wear, or other issues. Perform maintenance or replace the seal as needed to ensure optimal performance. It's crucial to follow the manufacturer's specific instructions and recommendations for installing the particular single face cartridge seal you're working with, as installation procedures can vary depending on the design and specifications of the seal. If unsure, consult the manufacturer's documentation or contact their technical support for guidance.  

Q: What is a mechanical seal? A: An end-face mechanical seal is a device used on a rotating shaft to seal fluids. It consists of two flat faces that are installed perpendicular to the shaft. One of the faces is mounted stationary to the seal chamber or housing. The other face rotates with the shaft to provide the primary seal. Axial mechanical force and fluid pressure maintain the contact between the wearable seal face materials. Q: What is a cartridge seal? A: A cartridge-mounted, end-face mechanical seal (cartridge seal) is a completely self-contained unit that consists of the sealing components, a gland, sleeve, and hardware that allows the unit to be pre-assembled and preset. This feature eases installation and maintenance on rotating equipment on which axial adjustments are required. Q: What is a component seal? A: Component, end-face mechanical seals (a component seal) consist of a separate rotating member and stationary seat that mount in a gland or housing. Since they are not preset, installation and maintenance are generally more difficult requiring experienced technicians to properly install and adjust them Q: In what applications are each mechanical seal type best-suited? A: Rotating equipment used in processing gases, liquids, and slurries are the primary applications where end-face mechanical seals can be cost effectively considered and applied. Some types of rotating equipment that are not equipped with a seal chamber or stuffing box for installing a gland require that a component seal be used. Cartridge-mounted, end-face seals were primarily introduced for installation on American National Standards Institute centrifugal pumps on which axial shaft adjustments can be made. The simplicity and ease of installation and maintenance they offer makes cartridge-mounted single and dual units a primary consideration for all types of rotating equipment that are equipped with a stuffing box or seal chamber in which a gland can be installed. JIAXING BURGMANN MECHANICAL SEAL CO., LTD Contact email: doris@mechanicalseal.com.cn    

SSIC Silicon carbide mechanical seal is a kind of silicon carbide product produced with silicon carbide material. Silicon carbide mechanical seal has heat resistance, according to different process, the performance of heat resistance is not the same. The reaction-sintered silicon carbide seal ring can be used at 1300, while the pressure-free sintered silicon carbide seal ring can reach 1600. Silicon carbide mechanical seal manufacturing process is: raw material processing – molding – sintering – grinding – assembly. Ssic mechanical seal is the most versatile friction material in mechanical seals.It has strong chemical resistance performance, high mechanical strength, good wear resistance, high temperature resistance, good self-lubrication, light weight, low coefficient of thermal expansion, high hardness, good dimension at extremely high temperatures , strong corrosion resistance and high elastic modulus, long service life and other characteristics.Applicable to the production of various mechanical rings,bearings,bushings and other friction materials.Sic mechanical seal are widely used in petroleum,electric power,light industry,aerospace,automotive,paper and sewage treatment,chemical pump and its rotary machinery and other fields,and paired with carbon graphite,sic mechanical seal has the smallest friction coefficient. It can be used as a high-parameter mechanical seal. JIAXING BURGMANN MECHANICAL SEAL CO., LTD Contact email: doris@mechanicalseal.com.cn

Advantage and disadvantage of mechanical seals(compare with soft packing seal ) Advantage : 1. Reliable seal ,over a long period of use ,it will not leakage or few leakage. 2. Have a long time useful life, if choose the right material and pressure of seal face can use 2-5years ,the longest is 9years. 3. Minimum maintenance ,it doesn't need to maintain in normal working conditions. 4. Less consumption friction power 5. Shaft or sleeve is not affected by wear . 6. Wide range of application ,can use in low temperature high temperaturehigh vacuum ,high pressure, various speeds and various corrosion ,flammable, explosive ,toxic media seal. Disadvantage : 1. One –time investment is higher. 2. Structure is more complex, high requirement for manufactory produce. 3. Installing and replacing are much trouble, require the works have a certain level for install. 4. When a fortuitous event occurs ,it's difficult handle with .   JIAXING BURGMANN MECHANICAL SEAL CO., LTD Contact email: doris@mechanicalseal.com.cn

Direct injection of liquid into the high pressure side of the double or single seal is called "flushing". General pumps should be flushed, especially light hydrocarbon pumps. 1. Rinse to dissipate heat. The heat generated by the liquid seal must be controlled. This can be achieved by flushing the sealed chamber with liquid to remove heat and control temperature rise. 2. Lower liquid temperature. In some cases, the liquid temperature is so high that the sealing performance is affected. In such cases the temperature must be lowered to improve the properties of the liquid. 3. Change the pressure of the sealing chamber. In some cases, the sealing chamber pressure may need to be increased or decreased to improve performance. This can be achieved by suppressing evaporation or reducing the thermal load on the seal. 4. Cleaning process liquid. If the process fluid contains inappropriate solid particles or contaminants, the fluid in the sealed chamber needs to be cleaned. In extreme cases, it may also be necessary to provide a clean fluid from outside the sealing system. 5. Control the air side of the seal. Because process liquids are in contact with the atmosphere, they may dry out, crystallize, or coke. It is important to prevent interactions with the atmosphere that may adversely affect the sealing performance.                                                                                                                                  Company name: Jiaxing Burgmann Mechanical Seal Co., Ltd                                                                                                                              Contact person: Doris Sun                                                                                                                              Email Address: doris@mechanicalseal.com.cn                                                                                                                              Skype: kathysunlin

For a very long time, packing materials are often used to contain leaks. They are made using soft, flexible materials that are versatile enough to be used in any application. Traditionally, gland packing is the most popular method of packing used in sealing. It has been proven to be effective, cost efficient and is quite versatile making it the reliable choice for many industrial applications. These thick synthetic materials are physically stuffed to fill the gap between the mechanism to avoid leaks but because of their design, they are not ideal in areas where contaminated gas or other vapor substances are supposed to be contained.                                                                                                                                                            Jiaxing Burgmann Mechanical Seal Co., Ltd                                                                                                                                                            Email: doris@mechanicalseal.com.cn

Mechanical seal developed rapidly in recent years, according to different situation of the various structures, but no matter what kind of structure by the following four components: The first part is a ring composed of Ha Tinh ring sealing face, sometimes called Friction. The second part is a flexible component parts for the major component of the buffer compensation, the role is to tightly seal faces. The third part is a supporting ring, which ring and static ring seals. The fourth part is to ring with the axis of the transmission mechanism. Mechanical seal is a rotary Pump Seal device. Such as pumps, centrifuges, reactors and compressors and other equipment. As the shaft through the inside and outside the device, so that axis and a circular space between equipment, equipment in the medium leaking out through the gap, the pressure lower than atmospheric pressure if the device, then the air leak within the device, so there must be a device to prevent leakage of the seal. Many different types of seals, Pump Seals have leakage due less to drink and long lifetime, so today's world, mechanical seal is the most important axis in the sealing device. Also known as seal mechanical seal, the national definition of the standards is that: the "by at least one pair of Chuizhi on a rotating axis of the end of fluid pressure and the compensation mechanism in the role of elastic auxiliary sealing the tie affixed He Bing Xia Bao Chi Hua Dong Er Gou Cheng relative device to prevent fluid leakage. " Sealing fluid leaks in the seal faces and the area between the centrifugal force in the opposite direction and the Pump Seall mechanical seal is called flow; seal fluid leakage between the seal faces with the centrifugal force in the same direction as the outflow mechanical seal. In general, multi-flow type Pump Seal in contents in more than suits the mechanical seal mechanical seal is the outflow. As the outflow direction and the centrifugal force in the same direction leak, so the outflow of a large amount of Split Seal leakage. Therefore, most used petrochemical process pump mechanical seal within the flow, pressure and temperature not only in the corrosive medium high until the outflow of mechanical seals used. Installation position by static ring can be divided into interior and exterior-type mechanical seal. Static seal ring mounted on the inside of the mechanical seal gland called the built-in Pump Seals. On the contrary, in the installation of static sealing gland's outer ring called the externally mounted machine mechanical seal. Built-in mechanical seal for high temperature and pressure, and the medium on the ring and elastic components of the corrosion conditions are not high. Externally mounted mechanical seal for low and medium corrosive conditions. According to the number of spring compensation mechanism can be divided into multiple springs and single-spring mechanical seal. Multiple spring compensation mechanism is called multi-spring mechanical seal seal; compensation agencies, only a spring known as the single spring mechanical seal mechanical seal. Multiple Spring Mechanical Seals, also known as a small spring mechanical seals, axial small size of this structure, the method can be used to change the quantity of springs to change the elastic force, axial force is uniform, for high-speed mechanical seal, should not be used in corrosive media. Single spring mechanical seal, also known as Big Spring mechanical seal, seal structure is relatively simple. Some also use the spring type seal transfer torque. Big spring seal application made more, but not for high-speed. More than two groups and two groups with the layout of the composition of a single mechanical seal mechanical seal series. This seal means to progressively reduce the pressure of the sealed chamber, the medium is not to leak. Tandem seal generally rarely used, only used in very high pressure. Compensation mechanism for the bellows, sealing ring and ripple control as a whole, the middle ring without assistance, thereby reducing a leak; while reducing friction compensation mechanism, improving the follow nature; for welded metal bellows seal temperature restrictions are not supporting ring; for PTFE bellows seal can be used in corrosive media. The drawback is that some smaller elastic bellows, just add auxiliary spring. According to the number and arrangement of seal faces can be divided into single-end, double end and multi-Mechanical Seal. Two seal faces "back to back" or "face to face" arrangement of the seal is called double mechanical seal. For the working media of toxic, explosive, volatile, crystalline, high temperature, low temperature and working medium is a gas, or for high-vacuum sealing, can be double seal. Under normal circumstances sealing liquid using clean and good lubrication medium.   Jiaxing Burgmann Mechanical Seal Co., Ltd contact email: doris@mechanicalseal.com.cn Skype: kathysunlin Phone No: 8615381220188

(1) Secret cover open When repairing mechanical seals, 85% of the seal failure is caused not by wear, but by leakage before wear. When the sealing surface is opened, the solid particles in the medium enter the sealing surface under the action of liquid pressure, and when the sealing surface is closed, these solid particles are embedded on the surface of the soft ring (usually the right ink ring), which actually becomes a "grinding wheel" that will damage the hard ring surface. Because the dynamic ring or rubber ring is fastened to the shaft (bushing), when the shaft is strung, the moving ring can not be fitted in time, and the dense cover is opened, and the hysteresis of the sealing surface closes, so that the solid particles into the sealing surface. At the same time, there are solid particles between the shaft (bushing) and sliding parts, which affect the sliding of rubber rings or moving rings (relative dynamic sealing points, common faults). In addition, the medium will also be in the rubber ring and shaft (bushing) friction area to produce crystallization, in the spring will also have solid substances, will make the dense cover open. Mechanical Seals (2) Overheating Because heat will be generated on the sealing surface, the use temperature of the rubber ring should be lower than the design specification. Fluorine rubber and PTFE use temperature of 216 ℃, butyl rubber use temperature of 162 ℃, although they can withstand higher temperatures, but because the sealing surface produces higher heat, so the rubber ring has the risk of continued vulcanization, and eventually loss of elasticity and leakage.(Cold zone considering cold and brittle) The crystallization of the medium is also caused by heat in the sealing surface, such as carbon, causing the sliding parts to be glued and the sealing surface to be condensed. And some polymers are coking due to overheating, some of which lose lubrication and even flash fire due to overheating. Overheating, in addition to changing the condition of the medium, can also exacerbate its corrosion rate. caused by the deformation of metal parts, the cracking of alloy surface, as well as some coating cracks, the design should choose a balanced mechanical seal, in order to reduce the specific pressure to prevent overheating. (3) Extremely poor Correct assembly tolerances are necessary for the installation of mechanical seals, the shaft (bushing) must have the right surface roughness and the correct size, but the manufacturer rarely provides tolerance data, which is critical for installation. (relying on experience and common sense) The dimensional accuracy and shape tolerance of mechanical seals must conform to the drawing requirements, and the variance will lead to the early failure of the seal.

Mechanical seals mainly consist of the following four types of components: A. Main seals: Dynamic rings and static rings. B. Auxiliary seals: sealing rings. C. Pressing parts: springs, push rings. D. Transmission parts: Projectile seat and key or fixing screws.   ························································································································································   JIAXING BURGMANN MECHANICAL SEAL CO., LTD Contact person: Doris Sun Phone No: 8615381220188 Skype: kathysunlin