I. 🚀 Core Performance Advantages of PU Flexible Connectors

Polyurethane is an elastomer material with both soft and hard chain segments, allowing it to combine the high elasticity of rubber with the high rigidity of plastic. This material characteristic grants the connector product outstanding industrial performance:

1. Ultra-High Abrasion Resistance (Solving the Wear Problem)

This is the most crucial advantage of PU flexible connectors. Their resistance to wear is significantly superior to traditional materials like natural rubber, PVC, and nylon.

• Value in Application: Especially suited for conveying highly abrasive materials such as quartz sand, cement, ceramic powder, mineral powder, and carbon black. It drastically extends the service life of the connector and reduces downtime for replacement.

2. Excellent Flexibility and Elasticity (Handling Vibration and Displacement)

PU material possesses superb tensile strength and elastic recovery, effectively absorbing vibration and displacement generated by machinery (e.g., vibrating screens, fluid beds, dryers) during operation.

• Value in Application: Effectively isolates the transmission of vibration, protecting upstream and downstream rigid equipment from shock, and ensuring the stable operation of the conveying system.

3. Exceptional Sealing Performance (Achieving Dust-Free Operation)

The PU film structure is dense, providing excellent air tightness.

• Value in Application: When paired with specialized quick-release clamps or flanges, it achieves truly dust-free, zero-leakage powder conveying, meeting stringent environmental and safety standards, particularly important for industries with high cleanliness requirements.

4. Chemical and Oil Resistance

Polyurethane exhibits good resistance to many chemical solvents, oils, and weak acids/alkalis, making it less prone to aging or swelling.

• Value in Application: Suitable for use in complex environments like chemical and pharmaceutical processing, ensuring the long-term stability of the connector.

II. 🌍 Key Application Areas and Working Conditions

Thanks to its comprehensive performance, the PU powder flexible connector is widely used in industries with demanding material handling requirements:

III. 🛠️ Polyurethane Flexible Connector Selection Guide

Correct selection and installation are crucial for ensuring system performance. Here are the key factors to consider during selection:

1. Determining Connection Dimensions and Shape

• Diameter and Length: Accurately measure the Outer Diameter (OD) of the equipment connection ports, and determine the minimum and maximum installation length of the flexible connector based on the equipment's operating displacement. Ensure enough slack to absorb vibration and thermal expansion/contraction.
• Geometric Shape: Connectors are not limited to circular shapes; they can be rectangular, conical, or irregular, and should be customized according to the equipment interface.

2. Material Thickness and Grade Selection

• Abrasiveness: For extremely abrasive materials (e.g., quartz), choose PU with a greater thickness or a double-layer structure.
• Hygiene Requirements: Food and pharmaceutical industries must select Food-grade/Pharma-grade PU that complies with FDA or EU standards.
• Anti-Static: When conveying flammable or explosive powders, anti-static PU must be used to prevent electrostatic sparks from causing safety incidents.

3. Connection and Fixing Methods

Choosing the appropriate fixing method is key to ensuring a zero-leakage sealing effect.

4. Temperature and Pressure Considerations

• Temperature Range: Confirm that the material and ambient temperature are within the PU tolerance range (typically $-30^{\circ}\text{C}$ to $+80^{\circ}\text{C}$). If temperatures are higher, special high-temperature resistant PU or composite materials may be needed.
• Working Pressure: Determine whether the conveying system operates under positive pressure (blowing) or negative pressure (suction). In negative pressure conditions, the connector must have sufficient resistance to collapse; in positive pressure conditions, it requires enough strength to prevent bulging.

Conclusion and Recommendation

The Polyurethane Powder Flexible Connector is the ideal solution for tackling poor sealing and abrasion issues in modern industrial powder conveying systems. It combines ultra-abrasion resistance, high flexibility, and superior sealing characteristics, significantly boosting production efficiency and reducing maintenance costs.

💡 Call to Action: When selecting connectors for your powder conveying system, it is highly recommended to contact a specialized supplier and provide detailed information on material properties, operating temperature, pressure, and interface dimensions to obtain the most optimized and economical customized solution.