Made of cast polyurethane elastomer, available in two structures: **pure polyurethane** and **with built-in steel wire skeleton**. Highly used in mining, sand washing, and coal washing industries, primarily in vibrating screens, dewatering screens, high-frequency screens, and tension screens.
## ✅Core Advantages
1. **Long Wear Resistance and Lifespan:** 3-5 times more wear-resistant than manganese steel screens, lasting 1-2 years under normal operating conditions; tear-resistant, impact-resistant, acid and alkali resistant, and water corrosion resistant.
2. **Anti-Clogging and Self-Cleaning:** High elasticity; slight deformation of the screen holes during vibration prevents wet or finely sticky materials from clogging the holes, resulting in excellent dewatering and desliming effects, suitable for water washing applications.
3. **Lightweight and Low Noise:** Lighter than metal screens, reducing the load on the screening machine and lowering noise by 5-20dB; modular design for easy disassembly and replacement.
4. **High Aperture Precision:** Molded using a mold, square holes, slotted holes, and round holes are all possible, with a minimum aperture of 0.1mm, ensuring excellent fine material screening accuracy (see Douyin Encyclopedia).
## ⚠️Disadvantages
- Not heat resistant; long-term use at ≤80℃ will cause materials to soften and age.
- Weak resistance to impacts from sharp, hard objects; easily cut by large, sharp stones.
- Higher purchase price than manganese steel screens, but lower overall maintenance costs.
## 📐Common Parameters
- Hardness: Shore A 85-95A, customizable hardness available
- Aperture: **0.1mm-170mm**; Fine dewatering multi-purpose slotted screen 0.2-3mm; Sand and gravel grading 1-50mm (from Douyin Encyclopedia)
- Thickness: 15-40mm; Installation method: Clip-on, bolt fixing, tension hook edge
- Working temperature: -30℃～80℃
- Hole type: Square hole, long slotted screen, round hole; Non-standard customization according to screen box size supported
## 🛠Applicable Industries
- Sand washing plants: Fine sand recovery, tailings dewatering
- Coal mines: Demediuming, dewatering
- Mining: Iron ore, non-ferrous metal ore grading, dewatering
- Sand and gravel aggregate, building materials, sand and gravel washing, chemical powder screening (from Douyin Encyclopedia)