The PDF-type piston seal is a high-performance composite sealing element engineered for demanding static sealing applications. Unlike conventional seals, the PDF series combines advanced materials with precision engineering to deliver exceptional performance in ultra-high-pressure hydraulic systems.
Composite Construction for Extreme Conditions
The PDF seal features a sophisticated design incorporating a metal washer with a mechanically bonded elastomeric sealing element. The elastomer is secured through serrated interlocking, creating a permanent bond that prevents shear damage even under prolonged compression. This robust construction ensures the seal remains intact and fully functional in the most demanding environments.
Engineered for Static Excellence
Designed specifically for static face sealing and bolt head applications, the PDF seal excels where conventional seals fall short:
Ultra-High Pressure Rating: Withstands pressures up to 1500 bar—far exceeding standard hydraulic requirements
Secure Installation: Provides reliable seating under bolt heads, ideal for applications with smooth bolt shanks or where installation requires passing over threads
Advanced Material Options
| Material | Temperature Range | Best For |
|---|---|---|
| NBR | -30°C to +100°C | General hydraulic fluids, standard temperatures |
| FKM | -20°C to +200°C | High-temperature environments, aggressive chemicals |
| HNBR | -20°C to +150°C | Enhanced mechanical properties, oil resistance |
Operating Parameters
| Parameter | Specification |
|---|---|
| Maximum Pressure | 1500 bar (ultra-high pressure) |
| Temperature Range | -30°C to +200°C (material dependent) |
| Media | Hydraulic fluids, various industrial media |
| Application | Static sealing only |
Key Performance Advantages
Extreme Pressure Capability: Engineered for ultra-high hydraulic pressures up to 1500 bar
Bonded Construction: Serrated interlocking between metal and elastomer ensures permanent bond integrity
Extrusion Resistant: Metal washer provides robust protection against elastomer deformation
Temperature Versatility: Multiple material options from -30°C to +200°C
Universal Compatibility: Available elastomers suit a wide range of hydraulic fluids
Installation Guidelines
Designed for bolt head and static flange applications
Seats securely during installation, ideal for smooth bolt shanks
Can be installed over threads without damaging the seal
Proper bolt torque essential for optimal sealing compression
Typical Applications
Hydraulic Systems: Ultra-high pressure components and assemblies
Flange Sealing: Static face sealing between bolted flanges
Bolt Head Sealing: High-pressure circuit sealing under bolt heads
Industrial Machinery: Heavy equipment requiring reliable static sealing
Mobile Hydraulics: Construction and mining equipment applications
The PDF Type Seal delivers metal robustness with elastomeric precision—engineered for ultra-high-pressure static applications where conventional seals cannot survive.
Original text from: pneumatic seal https://www.bszzseal.com/
