Prayag Rubber Product

🟪 PU Chevron Set (Polyurethane Chevron Packing Set)

A PU Chevron Set is a V-type sealing system made entirely or primarily from Polyurethane (PU). It is designed for high-pressure, dynamic sealing applications—especially in hydraulic cylinders where excellent abrasion resistance, elasticity, and longevity are required.

🔧 Description

• Configuration:

  • Top Ring: Provides initial compression and protects the set from contamination.

  • Middle V-Rings (Sealing Rings): Made of PU in V-shape, each ring seals under pressure by expanding outward.

  • Bottom Ring (Support Ring): Acts as a guide and absorbs axial load.

• Material: High-performance Polyurethane (PU), sometimes combined with fabric-reinforced elements for added strength.

⚙️ Technical Specifications ✅ Advantages

• Excellent abrasion and wear resistance

• High tear strength

• Maintains elasticity under pressure

• Good chemical resistance to hydraulic oils and greases

• Longer service life than rubber-based sets

• Handles shock loads and pressure spikes well

🛠️ Applications

• Heavy-duty hydraulic cylinders (construction, mining, steel plants)

• Earthmoving equipment

• Hydraulic presses

• Marine and offshore hydraulics

• Injection molding machinery

🔩 Installation Tips

• Use proper tools to avoid damage to PU rings.

• Ensure correct stack orientation: each V-ring must face the pressure side.

• Use lubrication during assembly to prevent pinching or tearing.

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