Prayag Rubber Product

We are a leading manufacturer of premium-quality V-Rings, also known as axial shaft seals, designed to protect rotating shafts and bearings from contaminants such as dust, dirt, water, and chemicals. Made from durable elastomers, our V-rings provide a reliable sealing solution in demanding industrial environments.

Key Features:

• Effective Contaminant Exclusion: Prevents ingress of dirt, dust, moisture, and other contaminants.

• Low Friction Operation: Operates with minimal contact pressure on the counter face, reducing wear and energy loss.

• Self-Retaining Design: Fits directly on the shaft without requiring additional fastening components.

• Versatile Installation: Can be used as a primary or secondary seal in a wide range of applications.

• Material Options: Available in Nitrile (NBR), Fluoroelastomer (FKM/Viton®), EPDM, and Silicone depending on temperature and chemical exposure requirements.

Standard Types:

• VA Type: Most common, for general-purpose sealing on smooth surfaces.

• VS Type: With reinforced body for enhanced stability and resistance to centrifugal forces.

• VL Type: Slim design for tight radial spaces.

• VE Type: For heavy-duty applications requiring higher axial force retention.

Technical Specifications:

• Shaft Diameter Range: 3 mm to 2000+ mm

• Temperature Resistance:

  • NBR: -40°C to +100°C

  • FKM: -20°C to +200°C

  • Silicone: -60°C to +230°

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🟪 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.

Would you like a cross-sectional diagram, CAD model, or specific part number reference for a PU Chevron Set?