Seals

Seals - Customized according to your ideas

Seals, these at first glance inconspicuous components, are our focus. Because without a perfect seal, the most elegant component and the most careful installation are of no use. Thus, a supposedly insignificant component quickly becomes a decisive product to which we pay the utmost attention. Whether in mechanical engineering or vehicle construction, in plant engineering or sanitary installation - the areas of application for seals are so varied that great importance must be attached to form and material selection. That's why we support you in your project with custom-made seals made of materials that are optimally suited to your project.

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What are seals used for?

Seals are workpieces that connect the various components of a structure in such a way that it is sealed against gases or liquids. If, for example, a faucet drips in the bathroom or the footwell in the car is damp, the cause is usually to be found in a defective seal. Seals can reliably seal static elements and elements that move against each other under the most difficult conditions. The gasket material is therefore as varied as the application of gaskets. We match this material optimally to the respective customer requirement and guarantee the highest possible quality for the material and manufacturing processes of our products.

What are seals made of?

We supply customized seals made of high-tech materials according to customer requirements. High-quality elastomers are used, which are specially selected and optimized for the respective application. These include polymers such as:

  • EPDM ( ethylene propylene diene rubber)
  • NBR, HNBR (nitrile butadiene rubber or hydrogenated nitrile rubber)
  • MVQ, VMQ (silicone rubber)
  • Natural rubber

EPDM ( ethylene propylene diene rubber) is obtained by refining natural rubber and is characterized by great weather and ozone resistance as well as high elasticity. EPDM is very well suited for seals that come into contact with hot steam and water. The polymer is less resistant to mineral oils and fuels. EPDM is suitable for the production of O-rings in mechanical seals or also flat seals. NBR, HNBR (nitrile butadiene rubber or hydrogenated nitrile rubber) is a polymer with high resistance to oils, greases and hydrocarbons. The material is characterized by low aging behavior as well as abrasion. By varying the acrylonitrile content during synthesis, NBR and HNBR can be influenced in terms of swelling resistance, elasticity, low-temperature flexibility and gas permeability. NBR is physiologically harmless and is therefore also used in the food industry. MVQ, VMQ (silicone rubber) is non-toxic highly elastic plastic based on silicon, from which much more can be made than the well-known sealant for sanitary installations. Silicone rubber is highly temperature resistant and also food safe. Natural rubber is an inexpensive and very durable product. Its hardness can be varied by different chemical treatments. However, natural rubber can dissolve under UV light or when in intensive contact with fats. Natural rubber can be provided with various additives and is also available in food-grade quality.

What types of seals are there?

According to their different application purposes, gaskets can be divided into different types. Contact seals and non-contact seals can be distinguished from each other according to the type of sealing effects. Contact seals consist of an elastic material that connects two static or dynamic components in a gas- and liquid-tight manner. Non-contact seals are generally used on dynamic components. Examples of non-contact seals are pressure and throttle seals, mass-force seals or viscous seals. Based on the relative movement of the components to be sealed, a distinction is also made between static and dynamic seals.

Dynamic seals

  • A stuffing box seals a rotating shaft against lubricant leakage and against the effects of dirt and water vapor.
  • Piston rings are important sealing elements in the combustion chamber of an engine that have to withstand the highest loads.
  • Many customers are familiar with bellows from buses and trains. We supply bellows in almost all dimensions from large to small. A bellows protects moving machine parts from dirt and moisture.
  • A brush seal consists of a bundle of thousands of fibers that lie tightly against the surface to be sealed. Brush seals are increasingly used in engines and turbines, where they have replaced the labyrinth seals that were frequently used until then. Brush seals have a very low leakage rate.
  • Hydraulic seals are used in hydraulic cylinders, where they prevent leakage of the hydraulic fluid and at the same time allow smooth translatory stroke movement of the piston.
  • A similar task is performed by the pneumatic seal, which effectively prevents the loss of compressed air in pneumatic systems while allowing proper clearance of the pneumatic piston.
  • A carbon lamella, also known as a carbon separator, separates the rotor from the housing chamber in pumps and compressors. Carbon has proven itself here as a low-wear material with an excellent coefficient of friction.

What are the application areas for seals?

The areas of application for our products are as varied as the sealing materials. For example, you will find seals in the construction industry for doors and windows as well as the sanitary sector, in automotive and mechanical engineering, and in the chemical and food industries.

Seals in the sanitary sector

What would faucets, siphons, showers and bathtubs be without seals? If you don't want to experience any nasty surprises due to water damage, you should rely on high-quality seals in the sanitary sector.

Seals for windows & doors

No house or apartment is rented out without an energy certificate. At the same time, improperly sealed windows and doors represent the biggest cold bridge. Perfect window seals save money and enhance the energy efficiency of any property.

How to get your gasket

Price, quality, delivery reliability, and cost-effectiveness are also essential factors for the supply of sealing elements. When it comes to the exact manufacture and delivery of components according to your drawings, samples or plans, there is another indispensable factor: expertise. With many years of experience in the processing of elastomers and high-performance plastics, as well as numerous customers in almost all branches of industry, it is easy for us to have an overview of the entire process for which you need your seals. As a result, we often come up with solutions during the design phase of your product, where we have been able to help our customers with specific improvements in details. Approach us with a drawing or your own prototypes. Together we will make the selection for the perfect gasket material and create for you exactly the gasket that fits your intended use.

Send a product request

Send a product inquiry or call us, 07195/ 5830-974