Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
DPT Hydraulic Piston Seal with T-Type Design
Low-Friction, High-Wear Resistance for Piston Applications
DPT is a T-shaped piston seal combining PTFE and NBR, designed for bidirectional sealing in hydraulic cylinders. It withstands pressures up to 60MPa, operates reliably from -45℃ to +200℃, and offers low friction with no creeping, making it ideal for industrial applications like machine tools, construction equipment, and servo systems.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
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1.Product Advantages
The DPT piston seal sets the standard for reliability and performance. Its PTFE+NBR composite structure offers zero leakage and exceptional wear resistance, ensuring long service life even under 60MPa pressure. With a wide temperature range of -45℃ to +200℃, it excels in extreme environments. The T-shaped design minimizes friction, eliminating stick-slip effects and enabling smooth operation at speeds up to 15m/s.
2.Product Function Diagram
Illustration of DPT seal installed in a hydraulic cylinder: The T-shaped PTFE ring forms a tight seal against the cylinder bore, while the NBR O-ring maintains constant contact pressure during piston reciprocation, preventing fluid leakage in both directions.
3.Product Details
Material: PTFE sealing ring + NBR O-ring for optimal elasticity and chemical resistance.
Structure: Precision-molded T-profile ensures tight contact with cylinder walls.
Installation: Compatible with standard piston grooves, reducing retrofit complexity.
4.Applications：
DPT seals are trusted across industries:
Industrial Machinery: Ideal for machine tools, presses, and injection molding equipment.
Construction & Mining: Reliable in excavators, loaders, and hydraulic breakers.
Automation: Used in servo cylinders for high-precision positioning systems.
Aerospace & Marine: Withstands harsh conditions in aircraft landing gear and ship hydraulic systems.
5.Frequently Asked Questions
Q: What is the maximum working pressure?
A: DPT seals operate safely up to 60MPa.
A: DPT seals operate safely up to 60MPa.
Q: Can it be used with water-based fluids?
A: Yes, it is compatible with hydraulic oil, water-glycol mixtures, and fire-resistant fluids.
A: Yes, it is compatible with hydraulic oil, water-glycol mixtures, and fire-resistant fluids.
Q: How do I install the DPT seal?
A: Refer to our installation guide; ensure the groove dimensions match ISO 7425-1 standards.
A: Refer to our installation guide; ensure the groove dimensions match ISO 7425-1 standards.
6.Our Company Edge
With 20+ years of sealing technology expertise, we guarantee:
Customization: Tailored solutions for unique pressure, temperature, and size requirements.
Quality Assurance: 100% leakage testing and ISO 9001:2015 certification.
Global Support: 24/7 technical assistance and fast delivery across 50+ countries
Invest in DPT seals for unrivaled performance, durability, and peace of mind.
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