Sealing products sensitive to a change in temperature or pressure. It can damage one of the seal materials.
Elastomers are very sensitive to both temperature and pressure.
In this paper we will be considering how small changes in either temperature or pressure will cause one or both of these failures to occur, and learn how to prevent these changes especially when the pump is stopped and often subject to both temperature and pressure fluctuations. Caustic and sugar solutions are examples of this. Cause a liquid to vaporize, blowing the lapped seal faces apart, letting solids penetrate between the faces or causing damage as the faces bounce open and shut. This happens any time water flashes to steam. Cause some liquids to become viscous, preventing the seal faces from staying in contact.