# Hong Teng Mechanical Seals


## Posts

- [Mechanical Seal Face: How Seal Faces Work, Wear Patterns and Inspection](https://pt.hongtengseals.com/mechanical-seal-face/): A mechanical seal face is one of the most important working surfaces inside a pump mechanical seal.  […]
- [How to Identify the Correct Mechanical Seal for a Pump](https://pt.hongtengseals.com/how-to-identify-the-correct-mechanical-seal-for-a-pump/): Learn how to identify the correct mechanical seal by cross-checking pump data, old seal components, critical dimensions, reference numbers and operating conditions.
- [How to Select a Replacement Mechanical Seal for Lowara Pumps](https://pt.hongtengseals.com/lowara-replacement-mechanical-seal/): Select a Lowara replacement mechanical seal from the pump identity, the removed seal, and the actual […]
- [Shaft Runout and Misalignment: How They Affect Mechanical Seal Life](https://pt.hongtengseals.com/shaft-runout-misalignment/): Shaft runout and misalignment often hide behind a familiar maintenance story: the seal is replaced,  […]
- [Cartridge Mechanical Seal Installation: Step-by-Step Guide and Common Mistakes](https://pt.hongtengseals.com/cartridge-seal-installation/): Cartridge seal installation looks simple because the seal arrives as a preassembled unit. That conve […]
- [Pump Cavitation and Vibration: How They Cause Seal Failure](https://pt.hongtengseals.com/pump-cavitation-vibration-seal-failure/): Pump cavitation and vibration can destroy a mechanical seal even when the seal has the correct size, […]
- [Double Mechanical Seal Arrangements: Tandem, Back-to-Back & Face-to-Face](https://pt.hongtengseals.com/double-mechanical-seals-arrangements/): Double mechanical seals use two sealing interfaces to create an additional controlled zone between t […]
- [API 682 Seal Flush Plans: Plan 11 vs Plan 21 vs Plan 23](https://pt.hongtengseals.com/api-682-seal-flush-plans/): API 682 seal flush plans help control the environment around mechanical seal faces. Plan 11, Plan 21 […]
- [Mechanical Seal Dry Running: Causes, Damage & Prevention](https://pt.hongtengseals.com/mechanical-seal-runs-dry/): When a mechanical seal runs dry, the thin liquid film between its rotating and stationary faces disa […]
- [Mechanical Seal Elastomers: NBR vs EPDM vs FKM vs FFKM](https://pt.hongtengseals.com/mechanical-seal-elastomers/): Compare NBR, EPDM, FKM and FFKM for mechanical seal O-rings and elastomers by fluid compatibility, temperature resistance and application requirements.
- [Mechanical Seal vs Packing: Cost, Leakage & Maintenance](https://pt.hongtengseals.com/mechanical-seal-vs-packing/): Mechanical seal vs packing decisions should begin with leakage limits, pump duty, maintenance resour […]
- [Rubber vs Metal Bellows Mechanical Seals: How to Choose](https://pt.hongtengseals.com/rubber-vs-metal-bellows/): Rubber vs metal bellows is a practical comparison of flexibility, temperature resistance, chemical c […]
- [Balanced vs Unbalanced Mechanical Seals: Key Differences](https://pt.hongtengseals.com/balanced-vs-unbalanced-seals/): Learn how balanced and unbalanced mechanical seals differ in hydraulic loading, operating range, heat generation, design complexity and application selection.
- [Single vs Double Mechanical Seals: Which Should You Use?](https://pt.hongtengseals.com/single-vs-double-mechanical-seals/): Compare single and double mechanical seals by leakage control, operating environment, support-system requirements, complexity and typical pump applications.
- [Mechanical Seals for Seawater Pumps: Materials and Corrosion Risks](https://pt.hongtengseals.com/seawater-pump-seals/): Learn how to select mechanical seal faces, elastomers and metal components for seawater pumps while reducing corrosion and wear risks.
- [How to Select Mechanical Seals for Acids and Corrosive Fluids](https://pt.hongtengseals.com/mechanical-seals-for-acids-corrosive-fluids/): Select mechanical seals for acids and corrosive fluids by checking chemical compatibility, temperature, concentration, seal faces, elastomers and metal parts.
- [Food-Grade Mechanical Seals for Dairy & Beverage Pumps: Selection Guide](https://pt.hongtengseals.com/food-grade-mechanical-seals-dairy-beverage-pumps/): Select food-grade mechanical seals from the complete hygienic duty, not from appearance or shaft siz […]
- [Mechanical Seals for Hot Water & Boiler Feed Pumps: Selection Guide](https://pt.hongtengseals.com/mechanical-seals-for-hot-water-boiler-feed-pumps/): Select hot water mechanical seals from the actual seal-chamber conditions, not from water temperatur […]
- [Mechanical Seal Materials for Wastewater & Slurry Pumps](https://pt.hongtengseals.com/mechanical-seal-materials-wastewater-slurry-pumps/): Mechanical seal materials strongly affect pump reliability in wastewater and slurry service. The fac […]
- [Wilo Pump Mechanical Seal Replacement: Identification & Service Guide](https://pt.hongtengseals.com/wilo-pump-mechanical-seal-replacement/): A reliable Wilo mechanical seal replacement starts with the exact pump identity, not the Wilo name a […]
- [EBARA Submersible Pump Seal Failure: Causes & Troubleshooting](https://pt.hongtengseals.com/ebara-submersible-pump-seal-failure/): EBARA submersible pump seal failure often begins with contaminated seal-chamber oil, abrasive solids […]
- [CNP CDLF vs CHL Mechanical Seal Selection Guide](https://pt.hongtengseals.com/cnp-cdlf-chl-pump-mechanical-seal-selection/): CNP CDLF and CHL pump mechanical seal selection should begin with the complete pump model, not only  […]
- [What Information Should You Send to Identify a Mechanical Seal?](https://pt.hongtengseals.com/mechanical-seal-identification-photos-dimensions-pump-models/): Learn which pump details, seal photos, dimensions and operating information to send for faster and more reliable mechanical seal identification.
- [Flygt Pump Mechanical Seals: Upper vs Lower Seals Explained](https://pt.hongtengseals.com/flygt-pump-mechanical-seals-upper-lower/): Flygt pump mechanical seals commonly use two sealing positions to protect the motor from pumped liqu […]
- [Grundfos Pump Mechanical Seal Replacement: Selection Guide](https://pt.hongtengseals.com/grundfos-pump-mechanical-seal-replacement/): A reliable Grundfos mechanical seal replacement starts with the complete pump identity, not only the […]
- [OEM vs Original Mechanical Seals: A Buyer’s Comparison Guide](https://pt.hongtengseals.com/oem-mechanical-seal-replacement-vs-original/): Compare original, OEM, aftermarket and compatible replacement mechanical seals, including verification, quality, documentation, cost and purchasing risks.
- [Silicon Carbide vs Tungsten Carbide Seal Faces: Which to Choose?](https://pt.hongtengseals.com/silicon-carbide-vs-tungsten-carbide-mechanical-seals/): Compare silicon carbide and tungsten carbide seal faces by wear resistance, toughness, chemical compatibility and operating conditions.
- [How to Measure a Mechanical Seal: Dimensions & Working Length Guide](https://pt.hongtengseals.com/how-to-measure-a-mechanical-seal/): Learning how to measure a mechanical seal accurately means recording more than one diameter. A usefu […]
- [Mechanical Seal Leaking After Installation? 12 Causes & Fixes](https://pt.hongtengseals.com/mechanical-seal-leaking-after-installation/): A mechanical seal leaking after installation usually indicates an installation error, damaged sealin […]
- [How to Select Mechanical Seal Materials for Different Fluids and Pump Conditions](https://pt.hongtengseals.com/mechanical-seal-material-selection-guide/): Choose mechanical seal face, elastomer and metal materials according to the actual fluid, temperature, pressure, solids and pump operating conditions.
- [Mechanical Seal Thermal Damage: Causes, Symptoms & Prevention](https://pt.hongtengseals.com/thermal-assault-mechanical-seals/): Understand how overheating, dry running, thermal shock and poor lubrication damage mechanical seal faces, elastomers and surrounding components.
- [Mechanical Seal Materials Guide: Carbon, Ceramic, SiC & TC](https://pt.hongtengseals.com/mechanical-seal-materials/): Compare carbon, ceramic, silicon carbide and tungsten carbide mechanical seal faces and understand where each material is most suitable.
- [Mechanical Seal Installation Guide: Setup, Startup & Maintenance](https://pt.hongtengseals.com/mechanical-seal-installation-guide/): Follow practical mechanical seal installation, startup and maintenance principles to reduce face damage, incorrect setting, dry running and premature leakage.
- [Flygt 3153.181 Mechanical Seal Replacement & Service Guide](https://pt.hongtengseals.com/flygt-3153-181-submersible-sewage-pump-service-mechanical-seal-replacement-field-sop-and-troubleshooting/): A Flygt 3153.181 mechanical seal replacement should begin with the exact pump configuration, not onl […]
- [Mechanical Seal Working Principle: How Mechanical Seals Work](https://pt.hongtengseals.com/mechanical-seal-working-principle-guide/): Understand how mechanical seal faces, secondary seals, springs and the fluid film work together to control leakage around a rotating shaft.
- [How to Choose the Right Mechanical Seal: Complete Selection Guide](https://pt.hongtengseals.com/mechanical-seal-selection-guide/): Learn how to select a mechanical seal by checking pump information, fluid, pressure, temperature, speed, seal design, face materials and elastomers.
- [Mechanical Seal Support Systems: Flush, Cooling, Buffer & Barrier Basics](https://pt.hongtengseals.com/mechanical-seal-system-2025-guide/): Understand mechanical seal support systems, including flushing, cooling, buffer and barrier arrangements, and when each function may be required.
- [Mechanical Seal Failure: Causes, Symptoms & Troubleshooting Guide](https://pt.hongtengseals.com/four-reasons-mechanical-seal-failure/): Identify common mechanical seal failure causes, symptoms and troubleshooting clues involving dry running, vibration, contamination, heat, installation and operating conditions.

## Pages

- [Products](https://pt.hongtengseals.com/products/): PRODUCT RANGE Mechanical Seals for Pumps & Industrial Applications Explore Hong Teng mechanical […]
- [About](https://pt.hongtengseals.com/about/): About ABOUT HONG TENG About Hong Teng Mechanical Seals Dongguan Hong Teng Mechanical Seal Co., Ltd.  […]
- [Contact](https://pt.hongtengseals.com/contact/): CONTACT HONG TENG Contact Us for Mechanical Seal Inquiries Send us your pump model, mechanical seal  […]
- [Case Centre](https://pt.hongtengseals.com/case-centre/): Product
- [Knowledge](https://pt.hongtengseals.com/knowledge/): TECHNICAL KNOWLEDGE Mechanical Seal Knowledge Center Practical technical guides on mechanical seal s […]
- [Hong Teng Mechanical Seals](https://pt.hongtengseals.com/): Mechanical Seal Manufacturer for Pumps & Industrial Applications Hong Teng is a mechanical seal  […]

## Optional

- [Agent (MCP protocol)](websites-agents.hostinger.com/pt.hongtengseals.com/mcp)

[comment]: # (Generated by Hostinger Tools Plugin)