Rubber-Metal Seals

A rubber-to-metal seal combines a conventional elastomer seal with a metal attachment. Stainless steels are often used, but also high-alloy structural steels with higher-grade corrosion coatings. The chemical properties of a rubber-to-metal seal can be specifically influenced by the choice of elastomer. For example, fuel-resistant seals can be realized just as easily as food-safe sealing elements for plants in the beverage industry.

Compared to other seal types, the rubber-to-metal seal offers several advantages in terms of physical and mechanical properties. These include:

• easy installation due to high dimensional stability of the seals
• Can also be used at very high pressures
• Special material combinations result in thermal stability up to 250 °C.

Rubber-to-metal seals can be used as force main or force shunt seals.

Due to their special properties, Rubber-Metal Seals can be used wherever absolute tightness must be guaranteed even under the highest loads. This is the case, among other things, for

• Gas pipelines
• Drinking water pipes and
• Power plants.

Drinking water pipes are exposed to large temperature fluctuations due to the seasons. The resulting expansion movements can reach considerable forces, which can be reliably absorbed by Rubber-Metal Seals.

In gas pipelines, the use of a Rubber-Metal Seal can achieve extremely high tightness even at low tightening torques. This is absolutely essential in pipeline construction.

The pipelines of power plants are not only exposed to high pressures and temperatures, but may also convey chemically hazardous substances or toxic gases. Rubber-Metal Seals are designed here not only to be temperature-resistant, but also resistant to chemicals.

A Rubber-Metal Seal can be precisely adapted to its intended use even under difficult conditions. The selection of suitable elastomers plays an important role here. Almost all high-quality elastomers are suitable for the production of a Rubber-Metal Seal, such as rubber, EPDM or NBR.

Added to this are the excellent sealing properties resulting from the combination of elastomer and metal. The most important of these are:

• Good compensation of angular deviations
• Very good sealing effect even with low surface pressure
• Very high adhesion between steel support ring and rubber cover
• Easier assembly due to dimensional stability

As a traditional and at the same time innovative company in the production and processing of high-quality plastics, we at Sattler SCM have state-of-the-art expertise and many years of experience in the development and production of Rubber-Metal Seals. Our experts are ready to help you with advice and support on all aspects of Rubber-Metal Seals, from initial planning to series production. Contact us today, just give us a call.