DPT1 Hydraulic Reciprocating Combination Seal (Copper-Filled PTFE Backup Ring + Dual Same-Size O-Rings)

1. Product Advantages

• Dual-Seal Synergy: Integrates a copper-filled PTFE backup ring and two identical O-rings, combining PTFE’s wear resistance (reinforced by copper powder for enhanced durability) with O-rings’ flexible, tight sealing—eliminating leaks even under high pressure.
• Extreme Environment Adaptability: Withstands pressure peaks, temperature fluctuations (-20°C to 120°C), and mild chemical exposure (hydraulic oils, lubricants), ensuring stable performance in harsh industrial settings.
• Long Service Life: Precision-engineered for reciprocating motion, the seal minimizes friction and abrasion, reducing replacement frequency and maintenance costs for equipment.
• Universal Compatibility: Standardized dimensions fit most industrial hydraulic systems, enabling easy installation and replacement without modifying existing machinery.

2. Working Principle

• The copper-filled PTFE backup ring acts as a rigid support, preventing O-ring extrusion under high pressure and maintaining the seal’s shape during repeated reciprocating movements.
• The two O-rings (made of high-quality elastomer) form a primary sealing barrier, utilizing their elastic deformation to tightly fit the sealing surface—blocking hydraulic fluid leakage.
  Together, the backup ring and O-rings create a synergistic system that balances structural stability and sealing flexibility, ensuring leak-proof operation in dynamic hydraulic applications.

3. Product Details

• Core Materials: Copper-filled PTFE (backup ring) – offers excellent wear resistance, low friction, and thermal stability; High-grade elastomer (O-rings) – provides superior elasticity and oil resistance.
• Dimensions: Standardized sizing (customizable for specific requirements) with precise tolerances to ensure perfect fit and sealing efficiency.
• Structural Design: Two identical O-rings (symmetrical arrangement) for balanced pressure distribution; Copper-filled PTFE backup ring (optimized thickness) for maximum extrusion resistance.
• Quality Assurance: Each seal undergoes strict pressure testing, wear testing, and dimensional inspection to meet ISO 9001 quality standards—ensuring reliability in critical applications.

4. Application Scope

• Hydraulic cylinders (engineering machinery, industrial automation equipment)
• Pumps and valves (hydraulic power units, fluid control systems)
• Heavy-duty machinery (construction equipment, agricultural machinery, mining machinery)
• Industrial automation lines (robotics, conveyor systems, packaging machinery)
• General hydraulic equipment (hydraulic presses, injection molding machines)

5. FAQ

6. Company Selling Points (Forever Seals)

• 15+ Years of Expertise: Specialized in industrial seal R&D and manufacturing, with deep experience in hydraulic sealing solutions—trusted by global clients in engineering, automation, and heavy industry.
• Quality-Centric Production: Equipped with advanced CNC machining and testing equipment, all products adhere to ISO 9001 and international sealing standards—100% quality inspection before shipment.
• Customization Capability: Flexible production lines to accommodate small-batch and large-volume orders, as well as custom designs for unique application scenarios.
• Global Service Network: Offers timely technical support, fast delivery, and after-sales service—ensuring smooth cooperation and problem-solving for clients worldwide.
• Sustainable Innovation: Committed to developing eco-friendly, energy-efficient seal solutions, reducing environmental impact while enhancing product performance and durability.