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

Selecting the right mechanical seal hinges on systematically matching the seal's specifications to your application's exact operating conditions, ensuring optimal performance and longevity. The selection process can be broken down into 5 core steps: 1. Define Key Operating Parameters: First, clarify the fundamental working conditions of the equipment. - Temperature: Note both the normal and maximum/minimum temperatures of the sealed medium, as this dictates the material compatibility of seal faces and elastomers. - Pressure: Determine the operating pressure and any pressure fluctuations within the seal chamber to select a seal structure capable of withstanding such forces. - Speed: Calculate the rotational speed (in rpm) of the shaft, as higher speeds may require specialized designs to manage heat and centrifugal forces. 2. Analyze the Sealed Medium Properties: The medium’s characteristics directly influence material selection. - Chemical Compatibility: Assess if the medium is corrosive (e.g., acids, alkalis), abrasive (e.g., slurries with particles), or viscous (e.g., oils). Choose materials like silicon carbide for abrasion resistance or fluoropolymers for chemical resistance. - Solid Content: If the medium contains particles, opt for seals with built-in flushing or filtering systems to prevent seal face damage. - Volatility: For volatile or low-lubricity media, select seals designed to maintain a stable lubricating film between faces. 3. Choose the Appropriate Seal Type: Select a seal design based on your equipment and application requirements. - Single vs. Double Seal: Use single seals for clean, non-hazardous media; double seals (with a barrier fluid) for toxic, flammable, or highly corrosive media to prevent leakage. - Cartridge vs. Component Seals: Cartridge seals are pre-assembled for easy, error-free installation, ideal for quick replacements. Component seals offer more flexibility but require precise on-site assembly. 4. Select Compatible Materials: Match the seal’s material components to the application. - Seal Faces: Common options include carbon-graphite (good for general use), silicon carbide (high hardness, abrasion-resistant), and tungsten carbide (excellent for high pressure). - Elastomers: Choose O-rings or gaskets made of nitrile rubber (for oils, water) or Viton (for high temperatures and chemicals). - Metal Parts: Select stainless steel for general corrosion resistance or Hastelloy for extreme chemical environments. 5. Consider Equipment and Installation Constraints: Ensure the seal fits within your system’s physical and operational limits. - Shaft Size and Tolerances: Confirm the seal’s inner diameter matches the shaft size, and check for acceptable shaft runout or eccentricity. - Space Limitations: If the seal chamber has limited space, opt for compact seal designs. - Maintenance Access: For hard-to-reach equipment, prioritize seals with long service lives or easy-to-maintain cartridge designs.     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

To extend the service life of mechanical seals, it is necessary to control the entire process of selection, installation, operation and maintenance. The core is to ensure that the seals always operate stably under suitable working conditions and minimize abnormal wear to the greatest extent. Specific measures can be taken from the following four key links: 1. Accurate Selection is the Foundation: Selecting seals that match the actual working conditions is a prerequisite for extending their service life. - Medium Adaptation: Choose corrosion-resistant materials (such as fluororubber, silicon carbide) or seals with particle flushing structures based on the corrosiveness, viscosity, and solid content of the medium. - Parameter Matching: Select the corresponding seal structure and elastic components according to the operating temperature and pressure of the equipment to avoid seal failure due to over-temperature or over-pressure. 2. Standardized Installation is the Key: Incorrect installation will directly shorten the seal life. Attention should be paid during installation: - Ensure Coaxiality: The coaxiality error between the seal shaft and the seal chamber should be controlled within the specified range (usually ≤ 0.1mm) to avoid uneven end face wear caused by eccentricity. - Control Compression Amount: Strictly adjust the compression amount of the seal according to the instructions. Excessive compression will increase frictional heat generation, while insufficient compression will fail to form an effective seal. - Cleanliness and No Impurities: Thoroughly clean the seal chamber, shaft sleeve and other components before installation to prevent impurities from entering the seal end face and causing scratch wear. 3. Optimizing Operating Conditions is the Core: Reduce the working load of the seals by improving the operating environment. - Control Medium State: Avoid sudden changes in medium temperature and pressure. For media containing particles, install filtering or flushing devices to reduce the scouring of particles on the seal face. - Avoid Dry Friction: Ensure the seal chamber is filled with medium before starting the equipment, or use auxiliary systems (such as liquid priming, heating) to prevent dry grinding of the seal end face. 4. Regular Maintenance is the Guarantee: Establish a sound maintenance mechanism to promptly identify and solve potential problems. - Daily Inspection: Regularly check the leakage amount and temperature of the seals. If increased leakage or overheating of the end face is found, stop the machine for inspection in time. - Regular Replacement of Wear Parts: Replace the elastic components (such as O-rings, springs) of the seals in advance according to the service cycle to avoid deterioration of seal performance due to elastic failure. - Record Operating Data: Record the service time and working condition changes of the seals to provide reference for subsequent selection and maintenance.     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

The length of the service life of mechanical seals varies depending on multiple factors. - Key influencing factors include: 1. Operating conditions: Such as the pressure, temperature, and speed of the equipment where the seal is installed. Higher pressure or temperature usually shortens the service life. 2. Fluid properties: Corrosive, viscous, or particle-containing fluids can accelerate seal wear and reduce its service life. 3. Installation and maintenance: Improper installation (e.g., incorrect alignment) or lack of regular maintenance (e.g., insufficient lubrication) will significantly shorten the service life; proper operation can extend it. In general, under normal working conditions and with good maintenance, the service life of mechanical seals can range from several thousand to over ten thousand operating hours.     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

- High temperature resistance: Can operate stably in high-temperature environments, suitable for applications involving hot media. - Pressure resistance: Excellent performance under high pressure, ensuring effective sealing without leakage. - Corrosion resistance: Made of metal materials with good corrosion resistance, adaptable to various corrosive media. - Long service life: The metal bellows structure is durable, reducing the frequency of replacement and maintenance. - Compensation ability: The bellows can provide automatic compensation for axial displacement, ensuring stable sealing performance even with equipment vibration or wear. - Wide application range: Suitable for various rotating equipment such as pumps, compressors, and agitators in industries like chemical, petroleum, and power.       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