Miele, a family-owned and operated manufacturer of high-end household appliances, uses a dual-curing adhesive to seal tiny electrical contacts of its Mrt washing machine motors. This so-called crimp contact sealing prevents the ingress of humidity and protects the contacts from corrosion. Miele performs complex humidity and salt spray tests to ensure that the adhesive delivers its promised properties.

The Miele Group, based in Gütersloh, Germany, is one of the world’s most renowned appliances manufacturers. According to the company, as of 2022, they employ a workforce of 23,300 employees and achieved revenues of nearly €5.43 billion.

For many years, Miele has been focusing on the manufacture of kitchen and laundry appliances, vacuum cleaners, and equipment for use in commercial and medical facilities (Miele Professional). Miele’s products, in particular its washing machines, are well known for their durability. The company tests its appliances for a service life of 20 years, making it clear that any products installed or used in these appliances meet extremely high requirements.

Machines need to withstand humidity

The purpose of sealing crimp contacts is to prevent contact corrosion of the aluminum-copper contacts. This is extremely important when it comes to washing machines that are being used where high air humidity is present, like in areas near the coast or on ships.

Crimp connections are mainly used in large-scale production, where single wires need to be assembled. Crimping is a fast method and a good alternative to soldering. It can help to create a connection to a conductor and connecting element that is barely detachable. With the help of tools, the cable and plug wires can be connected in a form-closed manner.