How Electrification of Construction Equipment Is Creating New Demand for PU Seals

February 16, 2026

The Rise of Electrification: Challenges and Needs in Construction Equipment

As construction equipment transitions from diesel to electric power, there arises a significant need for high-quality PU seals, especially from trusted manufacturers like Dingtong. Users often face issues related to leakage, pressure retention, and compatibility with various lubricants. For instance, many construction managers report that traditional seals fail under continuous exposure to electrically conductive fluids, leading to costly downtime. With the construction industry increasingly moving toward sustainability, the demand for PU oil seals that provide superior performance and reliability is more pressing than ever.

Preparation: Understanding Your Requirements for PU Seals

Before diving into the application of PU seals in electric construction equipment, consider the following preparations:

Research Materials: Identify the specific materials compatible with PU seals and understand their properties, focusing on temperature tolerance and pressure resistance.
Tools: Have the right equipment ready, including hydraulic presses and installation fixtures that meet the standards required for seal installation.
Documentation: Gather detailed specifications of your electric vehicles, including torque levels and pressure requirements.

Step-by-Step Guidance to Selecting and Installing PU Seals

Follow these detailed steps to ensure optimal installation of PU seals in your electrified construction equipment:

Identify Requirements: Analyze the operational environment, including temperature ranges (e.g., operating at -20°C to 80°C) and pressures (up to 300 bar).
Select Appropriate PU Seal: Choose seals with properties tailored to your conditions; for example, seals that have a tensile strength measuring at least 20 MPa.
Prepare the Installation Site: Ensure the installation surface is clean, free from debris or old sealing materials that could interfere with adhesion.
Use the Right Tools: Equip yourself with the correct tools for installation, specifically hydraulic presses that provide a uniform distribution of pressure across the seal.
Install the Seals: Carefully insert the PU seals and ensure they fit snugly in their designated grooves.
Validate the Installation: After installation, perform pressure tests to confirm that no leaks are present and that the sealing is tight.

PU Seal Installation

Common Errors in PU Seal Application and Their Solutions

Even seasoned professionals may encounter errors during seal installation. Here are some common mistakes:

Incorrect Seal Size: Always refer to your equipment manual for the exact dimensions of the required seal. Utilizing a seal that is even a millimeter off can lead to failure and leakage.
Insufficient Lubrication: Ensure the seals are adequately lubricated before installation to prevent tearing during the installation process.
Poor Surface Preparation: Neglecting to properly clean the installation area can lead to seal failure. Make it a habit to clean with the right solvents, like Isopropyl Alcohol, for effective results.

Summary and Suggestions for Optimal Seal Performance

The electrification of construction equipment is transforming how operators think about durability and reliability in their machines. High-performance PU oil seals from Dingtong can effectively address challenges related to sealing integrity under demanding conditions. For optimal performance:

Regularly inspect seals for wear and tear.
Update your seals every 5,000 operating hours or at manufacturer-suggested intervals.
Maintain a comprehensive inventory of seals to avoid equipment downtime.

Frequently Asked Questions (FAQ)

What types of PU seals are best for electric construction equipment?

For electric construction equipment, seals with high abrasion resistance and excellent chemical compatibility, such as those provided by Dingtong, are recommended.

How often should I replace the PU seals?

It\'s advisable to replace PU seals at intervals of approximately every 5,000 operational hours or if leakage is observed.

Can PU seals be used in both hydraulic and electric applications?

Yes, PU seals can be used in both hydraulic and electric applications, but ensure they meet the specific pressure and temperature requirements for both systems.