Smart Seals - Freudenberg Sealing TechnologiesSeals are increasingly being asked to do more than just seal. In the future, they should be able to forecast when they will break down and perform condition monitoring in real time – all on their own. As a technology specialist, Freudenberg Sealing Technologies is not just anticipating the steadily rising demands on seals but on future sealing materials as well. At Drinktec 2017 in Munich (Germany), the company presented a new generation of smart seals that is becoming possible for the food and process industries, thanks to a combination of various material characteristics.

Seals primarily consist of materials that cannot process signals in their pure form. That’s why Freudenberg Sealing Technologies’ material developers are investigating materials that seals can employ to become sensors or even actuators, for example, without impairing their original mission.

For instance, special material mixtures come under consideration for this. With a suitable design, it is possible for a seal to indicate its level of wear and for the information to be tied to system data. This makes it possible to predict when a particular seal must be replaced – an important capability for predictive maintenance, one of the core components of Industry 4.0. In this way, operating costs can be optimized: Seals can perform their task over their entire operating life, without being replaced too early. That means maintenance intervals can be scheduled pro-actively on a definite basis. On the other hand, the damage and follow-up costs resulting from leakage – which occurs when a seal is replaced too late – can be avoided.

There are diverse areas of application for smart seals. For now, the study, which was presented by Freudenberg sealing experts at Drinktec 2017, is limited to applications in aqueous media. Investigations are underway on how the study’s results can be carried over to other media.

More information on Freudenberg Sealing Technologies’ products for the food and process industries can be found here.


Gallagher Fluid Seals is your source for Freudenberg Sealing Technologies entire product line.  If you have any questions on how Freudenberg products can be implemented into your processes, please do not hesitate to contact us.


This article has been reposted, with permission, from Freudenberg’s NEWS section of their website.

Source Article: https://www.fst.com/press/2017/freudenberg-monitoredseals-press