Radial seal

Sealing elements require a standard elastic deformation (compression) between the sealing surfaces in order to function properly. Based on the direction in which this pressure-induced compression takes place, two types of installation of sealing elements can be distinguished.

The radial seal is pressed in a radial direction. Axial seals, on the other hand, are characterized by compression in the installation direction. Radial seals can be divided into two categories.

  • Piston seal: installation space in the inner part
  • Rod seal: installation space in the outer part

Piston seals are also referred to as externally sealing, while rod seals are referred to as internally sealing. Radial seals are used in static and dynamic applications.

#1 Definition radial seal

Radial seal is the designation for a sealing element or the type of installation in which the elastic compression between the sealing surfaces takes place in a radial direction

#2 Applications of the radial seal

The radial seal is a very common type of installation that is suitable for moving and stationary applications. For moving seals, a lower compression should be aimed for. 

In general, the installation space for the external sealing shoring can be produced more economically, so that this is preferred.

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