Temperature stability
The temperature greatly influences the physical properties of rubbery materials. If you look at the E-module (elasticity module) depending on the temperature, then at lower temperatures you will see a constant E-module at a high level which identifies the vitreous state. As the temperature increases, you get into the range of the glass transition in which the E-module fall drastically, after which a constant range is then reached again. The rubbery plateau, in which the material demonstrates elastic behavior, identifies the range at which it is used as a sealing material. If the temperature continues to increase, the E-module will fall, showing aging or viscous flow of the material (see graphics 1).
Figure 2 shows an overview of the thermal application ranges of the various types of elastomer. The red areas show temperature application ranges which standard types can only to be exposed to briefly or which are covered by special types.
