Inconspicuous, but systemically relevant: Why seals are crucial in energy technology

Discussions on the topic of energy technology often revolve around the large system components, such as rotor blades, generators, converters or support structures.

However, there are also far fewer visible components are crucial for smooth operation. Seals are among these key technical components. They protect against leaks, Contamination and pressure loss – ideally for years.

In this context, it is often the question of the right system – for example, between an oil seal or shaft seal. Crucial for the answer are pressure ratio, Shaft diameter and medium. In addition, the material must also be taken into account: While NBR − nitrile rubber − is used in standard applications, at higher temperatures or aggressive media, often FKM − fluororubber − or PTFE − polytetrafluoroethylene − are used.

The systems are able to detect leaks detect at an early stage and thus avoid unplanned downtimes. Round 18 percent of technical failures in wind turbines can be attributed to defective sealing systems. These, in turn, usually draw entail considerable follow-up costs.

Operators looking for proactive maintenance and tailor-made spare parts procurement, thus not only increase the availability, but also the service life of the critical components.

Technological Progress meets new requirements

Manufacturers are responding to the increasing requirements with innovative developments in the field of Sealing technology.

New lip profiles improve the For example, sealing under changing pressure conditions. Low friction Surface structures and reinforced materials such as FEP-coated elastomers or composite systems with metal beams are also increasingly being used. At the same time, sustainability aspects are also coming to the fore: Bio-oil-compatible seals or recyclable materials are therefore more and more entry into new series.

Is used in the selection, maintenance and monitoring for quality and technical fit, expensive However, effectively minimize failures and extend operating times.