Prelon rings

Look for special features, advantages and performance limits of these special rotary shaft seals under the following sub-categories. The examples are listed according to functional characteristics.

The instructions for construction and mounting of Prelon rings comes at the end. They can be downloaded as a pdf file to print and study at your leisure.

Characteristics, use and performance limits of Prelon rings

Characteristics of Prelon rings

Prelon rings are usually manufactured from PTFE or PTFE compounds. Some of their advantages are listed here:

• geometric adaptability

• the concept works without metal support construction

• the broad choice of materials and

• the various sealing elements

• the chemical, mechanical and thermal properties

Thus this special rotary shaft seal can be designed for a multitude of uses.

The special benefits of Prelon rings

lie for users and construction engineers in the…

• low dynamic friction

• dry runs possible

• excellent peripheral velocity

• variable shaping

• ability to cope with a broad thermal range
  (-200°C…+200°C)

• ability to withstand almost any chemicals

• suitable for food substances

• very simple surface treatments (for a selection of Prelon rings) and in their

• long life

Furthermore for the maintenance engineer

• separable designs (for a selection of Prelon rings)

• Adjustment /adaptability to pre-determined installation spaces and thus possible use in packing and for axial face seals

• Compensation for non-alignment

• Compensation for eccentricity

• The possibility of ordering small and really minute quantities

The Prelon ring can be used in new constructions or as spares for other seals already in use.

Examples of uses for Prelon rings:

• Screw conveyers

• Roller conveyers in the metal industry

• Pumps, mixers, agitators

• Rolling mills for glueing operations

• Fans

• Pneumatic dental tools

Application limits of Prelon rings

The following data give rough benchmarks. The application limits stem from a combination of the effects of pressure, temperature and velocity, as well as depending on the type of seal and its material, the surrounding construction and the medium to be sealed.

• Temperature -200°C...+200°C

• Pressure, depending on type and size 14 bar

• Velocity 20 m/sec

Temperature and pressure
 

Velocity and pressure