Prayag Rubber Product

The Polyurethane Combi Seal is a robust, single-acting rod or piston seal that combines the durability of polyurethane with an integrated elastomer energizer (usually NBR), delivering superior sealing performance under high pressure and demanding conditions. Designed for dynamic applications, it offers excellent resistance to wear, extrusion, and chemical attack.

• Dual-Material Construction: Outer sealing ring made from high-quality polyurethane (PU) for strength and wear resistance; inner energizer (typically NBR) ensures flexibility and tight sealing, even at low pressures.

• High Pressure & Temperature Resistance: Operates efficiently under pressures up to 400 bar and within a temperature range of -30°C to +100°C (depending on materials).

• Excellent Wear & Extrusion Resistance: Ideal for high-cycle applications in harsh environments.

• Low Friction Operation: Ensures smooth, reliable motion with minimal energy loss and heat generation.

• Compact Groove Design: Saves space and simplifies installation without compromising performance.

• Hydraulic Cylinders (rod or piston sealing)

• Construction and Mining Equipment

• Agricultural Machinery

• Industrial Presses and Injection Molding Machines

• Material Handling Systems

• Longer service life due to high abrasion resistance

• Effective sealing even at low pressures (thanks to the energizer)

• Easy to install in closed or split grooves

• Cost-effective solution with reduced downtime and maintenance

PU seals refer to Polyurethane-based seals, commonly used in hydraulic systems for dynamic and static sealing due to their excellent wear resistance and elasticity.

Description:

• Purpose: Provide tight sealing in both dynamic (moving) and static (fixed) applications.

• Material: Made from Polyurethane (PU), which has high mechanical strength, elasticity, and resistance to abrasion.

• Types:

  • Rod and piston seals

  • Wiper seals

  • Buffer seals

• Operating Conditions:

  • Pressure: Up to 400 bar

  • Temperature: -40°C to +100°C (some types up to +120°C)

  • Speed: Suitable for high dynamic applications

Applications:

• Construction machinery

• Agricultural equipment

• Industrial hydraulic cylinders

• Injection molding machines

Advantages:

• High abrasion resistance

• Excellent mechanical properties

• Long service life

• Good chemical and oil resistance