Choosing the Right Skirt Rubber System: Flat, Y-Type, and PU Skirting Compared

Why Conveyor Skirting Matters

In bulk material handling, an effective sealing system is essential for reducing spillage, preventing dust, protecting belt edges, and improving overall conveyor efficiency. Poor sealing at the loading point often leads to:

- Belt misalignment,

- Excessive wear on the belt and rollers,

- Higher dust levels and environmental issues,

- Increased maintenance and downtime.

YIQI Conveyor has supplied skirt rubber systems to mining, cement, quarry, and power industries for over 10 years. Through field experience and feedback from end-users, three skirt solutions are widely preferred: Flat Skirt Rubber, Y-Type Skirting, and PU Skirting.

Flat Skirt Rubber: Simple and Reliable for Most Conditions

Structure and Material

Flat skirt rubber is the most commonly used sealing option, made from natural rubber (NR), SBR, or a blend. YIQI typically provides hardness options from 55–65 Shore A,depending on belt speed and material abrasiveness.

Technical Characteristics

-Uniform thickness ranging from 6–20 mm

-Straight-edge design for easy cutting and installation

-Good flexibility to follow belt contour

-Moderate wear resistance suitable for standard loading points

Advantages

- Cost-effective,

- Easy to replace and install,

- Compatible with most troughing angles,

- Ideal for low to medium impact zones.

Limitations

- Requires frequent adjustment,

- Not ideal for high-pressure sealing,

- Not recommended for extremely abrasive material.

Best Applications

- Coal handling

- Power plants

- Fertilizer and grain conveyors

- Standard mining conveyors

Y-Type Skirting: Better Sealing for High-Dust and High-Volume Systems

Structure and Function

Y-Type skirting consists of a dual-lip structure.

The upper lip stabilizes the skirting, while the lower lip maintains continuous contact with the belt.

Technical Characteristics

Dual sealing lips provide self-adjusting contact

Hardness typically 55–70 Shore A

Designed for longer service life than flat rubber

Works well with mechanical clamp systems

Advantages

- Superior dust control,

- Better sealing pressure without increasing belt wear

- Reduced need for maintenance or re-adjustment

- Good performance at high belt speeds.

Limitations

- Higher initial cost,

- Slightly more complex installation

- Not necessary for light-duty conveyors

Best Applications

- Copper, gold, and iron ore mines

- High-capacity quarry conveyors

- Ports and bulk terminals

- Systems requiring strict dust control

PU Skirting: Maximum Wear Resistance and Belt Protection

Material Characteristics

PU skirting is made from high-performance polyurethane with:

- Hardness 70–95 Shore A,

- Excellent abrasion resistance (2–4 times longer life than NR/SBR rubber),

- Low friction coefficient.

YIQI's PU skirting is widely used in highly abrasive environments such as large mineral processing plants.

Advantages

· Extremely long service life

· Gentle contact with the belt surface

· Reduced risk of belt edge damage

· Good performance with wet, sticky, or sharp materials

Limitations

- Higher price than rubber skirting,

- Requires stable clamping system.

- unnecessary for soft or light materials

Best Applications

Hard-rock mining (copper, nickel, iron)

Cement clinker handling

High-speed belt conveyors

Environments with severe abrasion and heavy impact

Performance Comparison Table

How to Select the Right Skirt System

When selecting a skirt rubber solution, engineers should evaluate:

✔ Material Type

Fine, dusty → Y-Type or PU

Sharp, abrasive → PU

General bulk material → Flat skirting

✔ Belt Speed

3.5 m/s: Y-Type or PU

<3.5 m/s: Flat or Y-Type

✔ Loading Impact Level

High falling height → PU

Moderate → Y-Type or Flat

Low → Flat

✔ Budget and Maintenance Strategy

Low budget → Flat skirting

Low maintenance → Y-Type

Longest life cycle → PU

Why Choose YIQI as Your Skirt Rubber Supplier

YIQI Conveyor has supplied skirt sealing systems to customers in Vietnam, the Philippines, Indonesia, Peru, Oman, Zambia, and the DRC. Our advantages include:

✔ Material Customization

NR, SBR, NBR, PU options

Hardness 45–95 Shore A

Reinforced fabric layers (optional)

✔ Precision Manufacturing

Thickness tolerance controlled within ±0.5 mm

Smooth, clean cutting edges

Stable molecular structure for long life

✔ Engineering Support

We advise customers on:

Best skirting material for their loading point

Clamp system design

Belt width matching and installation angle

Expected wear life under different conditions

✔ Fast Production & Export Packaging

Standard sizes always in stock

Custom sizes delivered within 5–7 days

Export-ready packaging using strong pallets or wooden cases

Choosing YIQI means choosing a supplier who focuses on long-term performance rather than short-term sales.

Conclusion

Flat skirt rubber, Y-Type skirting, and PU skirting each have clear advantages depending on the conveyor's operating environment. Choosing the correct system significantly improves sealing performance, reduces spillage, cuts maintenance costs, and extends belt life.

YIQI helps customers evaluate their loading point conditions and provides customized skirt rubber solutions suited to mining, cement, port, and quarry operations worldwide.

If you need technical drawings, samples, or installation guidance, YIQI is ready to assist.