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

Chemical cartridge seal assembly is safe, precise, and standardized—follow this concise step-by-step guide for leak-free results, with emphasis on cleanliness, alignment, and no impact force. Pre‑Assembly Prep - Safety First: Wear chemical‑resistant PPE (gloves, goggles, apron); work in a ventilated area with spill kits. - Inspect: Check cartridge for damage; verify all components (gland, O‑rings, set screws, springs) match the model; discard if seal faces are chipped/scratched. - Shaft/Chamber Prep: Clean shaft/sleeve (Ra 0.2–0.4 μm) and seal chamber; confirm shaft runout ≤0.1 mm; remove burrs/scale. - Lubricant: Use medium‑compatible lubricant (e.g., fluorine‑based for corrosives) to avoid contamination. Step‑by‑Step Assembly 1. Lubricate: Apply a thin, even film to seal faces, elastomer contacts, and shaft/sleeve installation area—no excess. 2. Gasket Prep: Fit gland/drive collar gaskets (use silicone grease to hold in place); avoid sharp tools . 3. Install Cartridge: Align with shaft; push evenly axially (no hammers); rotate shaft by hand while pushing to ensure smooth seating. 4. Gland Fastening: Mount gland to seal chamber; tighten bolts diagonally/alternately (finger‑tight first, then incrementally) to avoid warping . 5. Set Collar/Set Screws: Adjust drive collar gap per spec (e.g., 3/32” for 33–65 mm shafts); tighten set screws evenly (align with drilled holes if applicable) . 6. Release Locking Devices: Remove/rotate spacers/locking washers to clear the sleeve; do not skip this step . 7. Final Checks: Rotate shaft manually to confirm no binding; verify all fasteners are tight and seal faces are clean/free of debris . Post‑Assembly & Startup - Reassemble pump, align coupling, and check for pipe strain . - Perform a leak test (air/water) before introducing process media. - Start the pump slowly; monitor for leaks, unusual noise, or excessive temperature rise. Key Do’s & Don’ts - ✅ Do use only manufacturer‑approved lubricants and tools. - ✅ Do maintain axial alignment throughout installation. - ❌ Don’t strike the cartridge or seal faces with hard tools. - ❌ Don’t over‑tighten bolts/screws (risk of deformation/leakage). - ❌ Don’t mix incompatible lubricants with the process medium. Critical Notes - Follow the seal manufacturer’s manual for model‑specific settings (gap dimensions, torque values, and locking features). - For dual‑cartridge seals, ensure proper flush/barrier fluid connections before startup. 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

Selecting the correct materials for a mechanical seal is crucial for reliability, longevity, and safety. The process involves matching the seal materials to the process fluid, operating conditions, and regulatory requirements. Below is a step-by-step guide. 1. Define the Application Requirements 1. Process Fluid: - Chemical composition (acids, bases, solvents, hydrocarbons, etc.). - Concentration and temperature. - Presence of solids (abrasives), gases, or dissolved oxygen. 2. Operating Conditions: - Pressure (inside the pump and ambient). - Temperature (minimum and maximum). - Shaft speed (RPM). - Shaft diameter and type (solid shaft or sleeve). 3. Regulatory & Safety Requirements: - FDA, USP, or other industry standards (for food, pharmaceutical, or biotech applications). - Emission limits (VOCs, hazardous fluids). 2. Select the Seal Face Materials The seal faces are the primary wear components and must resist both chemical attack and wear. Common combinations are: 1. Hard Face Materials: - Silicon Carbide (SiC): Excellent wear resistance, chemical resistance, and thermal conductivity. Ideal for most applications, especially with abrasive fluids. - Tungsten Carbide (WC): Good wear resistance, but less chemically resistant than SiC. Suitable for hydrocarbons and non-corrosive fluids. - Ceramic (Al₂O₃): Good chemical resistance, but brittle. Used in low to medium pressure, non-abrasive applications. 2. Soft Face Materials: - Carbon Graphite: Self-lubricating, good for many fluids. Used with hard faces (SiC, WC, ceramic). - PTFE/Carbon Composite: For highly corrosive fluids or FDA applications. Common Face Combinations: - SiC vs. Carbon Graphite (most general-purpose applications). - SiC vs. SiC (abrasive fluids, high wear). - WC vs. Carbon Graphite (hydrocarbons, low to medium abrasion). - Ceramic vs. Carbon Graphite (non-abrasive, corrosive fluids). 3. Select the Elastomer Materials Elastomers (O-rings, bellows, gaskets) must resist   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

Assembly of Chemical Cartridge Mechanical Seals Chemical cartridge mechanical seals are widely used in chemical processing due to their pre-assembled design, which simplifies installation and ensures sealing reliability. Below is a detailed, professional assembly process tailored to chemical application scenarios: 1. Pre-Assembly Preparation - Component Inspection: Check the cartridge seal for intactness—ensure no scratches, cracks, or debris on the seal faces (common materials like silicon carbide or tungsten carbide), and verify that elastomers (e.g., Viton for corrosives) are free of aging, swelling, or damage. Confirm all accessories (springs, set screws, gland plates) are complete and match the model. - Equipment Preparation: Clean the pump shaft, sleeve, and seal chamber thoroughly to remove chemical residues, scale, or solid particles, as contaminants can cause seal face damage. Measure shaft runout (must be ≤0.1mm) and surface roughness (Ra 0.2–0.4μm) to meet assembly requirements. Prepare compatible lubricant (consistent with the chemical medium, e.g., fluorine-based lubricant for strong corrosives) to avoid medium contamination. - Safety Precautions: Wear chemical-resistant gloves, goggles, and protective clothing, especially when handling toxic, corrosive, or flammable media. Ensure the work area is well-ventilated and equipped with emergency spill treatment tools. 2. Step-by-Step Assembly - Lubrication Treatment: Apply a thin, uniform layer of compatible lubricant to the seal faces, elastomer contact surfaces, and the pump shaft/sleeve where the seal installs. This reduces friction during assembly and prevents dry rubbing damage to the seal faces. - Cartridge Installation: Align the cartridge seal with the pump shaft, ensuring the seal chamber mating surface is clean and flat. Push the cartridge evenly along the axial direction—do not use hammers or hard tools to strike, as this can deform the seal face or damage internal springs. Rotate the shaft manually while pushing to ensure smooth installation without jamming. - Positioning and Fixing: Adjust the cartridge to the correct axial position according to the manufacturer’s specifications. Tighten the set screws or fixing bolts evenly in a crisscross pattern to avoid uneven force that could cause shaft misalignment. Ensure the compression amount of the internal spring meets requirements (typically 2–5mm, check with calipers if necessary). - Auxiliary System Connection: If the seal is equipped with a cooling, flushing, or barrier fluid system (common for double cartridge seals in chemical applications), connect the pipelines tightly. Ensure the flow direction and pressure of the fluid meet design standards—for example, the barrier fluid pressure should be 0.1–0.2MPa higher than the medium pressure to prevent medium leakage. 3. Post-Assembly Inspection and Test Run - Pre-Run Check: Rotate the pump shaft manually for 3–5 full rotations to confirm smooth operation without abnormal resistance. Inspect all connections for looseness, and check the seal chamber and pipeline for pre-leakage. - Test Run Procedure: Start the pump at low load first, monitoring the seal’s leakage rate (should be ≤5ml/h for liquid chemicals) and the temperature of the seal chamber (should not exceed the medium temperature by 20°C). Gradually increase to normal operating load, continuing to observe for abnormal noises, excessive temperature rise, or increased leakage. - Problem Handling: If leakage exceeds the limit or abnormal phenomena occur during the test run, stop the pump immediately. Check for improper installation (e.g., spring compression, shaft misalignment) or component damage, and rectify before restarting. I can help you create a customized assembly checklist for your specific chemical cartridge seal model, including detailed parameter requirements and safety notes for your applied chemical medium. Do you need me to formulate this personalized document?   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

Mechanical seal failure is often caused by improper selection, incorrect installation, harsh operating conditions, or poor maintenance. Here are the most common causes: 1. Improper Material Selection - Incompatibility with the medium: Elastomers swell/corrode (e.g., using nitrile rubber in strong oxidants), or seal faces are worn/corroded by abrasive/corrosive fluids. - Mismatched temperature/pressure resistance: Materials exceed their limits, leading to deformation, aging, or cracking. 2. Installation and Assembly Errors - Damage to seal faces: Scratches from impurities or improper handling (e.g., hammering during installation). - Incorrect spring compression: Too much compression causes excessive wear; too little leads to insufficient sealing force and leakage. - Shaft misalignment or excessive runout: Shaft runout exceeding 0.1mm causes uneven contact between seal faces, accelerating wear. 3. Abnormal Operating Conditions - Dry running: Lack of lubrication between seal faces leads to instantaneous high temperature, burning or melting the faces. - Fluctuations in temperature/pressure: Sudden changes cause thermal shock or seal face deformation, breaking the sealing interface. - Solid particle contamination: Particles enter the seal face gap, causing scratches and abrasive wear. 4. Poor Maintenance and Management - Neglected leakage monitoring: Failure to detect excessive leakage in time leads to further damage. - Improper cooling/lubrication: Insufficient cooling fluid flow or high temperature causes seal overheating. - Aging of components: Elastomers, springs, or other parts degrade over time without timely replacement. I can help you conduct a targeted failure cause analysis based on your specific mechanical seal model, operating parameters, and failure phenomena (e.g., leakage type, seal face damage status). Do you need this professional analysis service?   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