High speed PDR rotary shaft seals

High speed PDR rotary shaft seals

PDR rotary shaft seal extends the boundaries of elastomeric radial shaft seals, utilizing advanced materials and design techniques to provide optimal sealing performance for each application. The result is a superior sealing solution that retains a compact sealed casing.

PDR seal consists of only two parts - a precision manufactured metal body and a mechanically retained PTFE sealing element. Unlike seals with pressed metal shells, gaskets are not required to provide sealing between the lip and the shell. This is provided through mechanical retention of the lip edge, thereby improving the chemical resistance and temperature range of the sealing system.

Where required, PDR seals can provide hydrodynamic characteristics on the sealing lip. This provides a positive displacement of the fluid as a result of shaft rotation, providing improved sealing in applications where the shaft rotates only in a single direction. This feature also increases the flexibility of the lip edge, which allows for a wider contact band between the lip edge and the shaft, and helps to reduce shaft load and related wear temperatures.

The mechanical retention of PTFE provides a sturdy product, which also eliminates the sometimes environmentally harmful process of bonding PTFE to metal or elastic substrates.

Application	Features
Durability in high temperature environments: Crank shafts, engines, gear boxes, axels, clutches, etc. Semiconductor Industry: Vacuum pumps for example   Actuators, gear boxes and motors	1. Highly wear-resistant 2. Excellent chemical resistance 3. High speed capability 4. Wide temperature range 5. Low friction and power consumption 6. Dry running capability 7. Standard and custom designs

Size Range(mm):

Shaft sizes 20 mm to 170 mm as standard for all types.