Freudenberg Sealing Technologies Heavy Industry Mining
Freudenberg Sealing Technologies Mining

Heavy Industry

Mining

Safety is the key

Sealing solutions for the mining industry

Safety is the highest priority when it comes to working underground. This puts the greatest possible quality demands on mining machinery, products and service providers. At the same time, operating efficiency plays a key role in this industry as well. So it is essential to bring three factors into harmony: cost minimization and the simultaneous maximization of productivity and safety. Freudenberg Sealing Technologies provides seals and sealing systems that live up to these standards.


Special sealing element design

Freudenberg Sealing Technologies Heavy Industry Mining

Sand, mud, water and fallen rocks are just a few of the challenges facing seals in mining operations. In addition, there are peak pressures of up to 250 MPa, which require a special sealing element design. High extrusion resistance is especially in demand. Parts of the seal or even the seal itself must not be forced into the gap between the design’s moving and fixed elements. That would greatly reduce the seal’s operating life.

In close cooperation with customers, installation proposals are developed with all the components of the seal system. They contain all the seal-relevant dimensions and tolerances, the maximum guide stresses and the resulting individual clearances. Whether in the customer's design department or during service on-site, these certified installation drawings save time and money while ensuring design safety.

Relevant products and applications in this market segment

FST Dynamische Dichtungen Dynamic Seals
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Dynamic Seals

Portfolio Freudenberg Sealing Technologies

Führungen

Guide Rings

Guide Rings have the task of guiding the rods and pistons of pneumatic and hydraulic cylinders and preventing direct metallic contact with the cylinder housing.

Dynamic Seals

Wipers

Wipers in pneumatic and hydraulic cylinders protect the interior of the cylinder from the penetration of external contaminants when the rod is retracted.

FST Dynamische Dichtungen Dynamic Seals Kolbendichtungen Piston Seals

Piston Seals

Piston Seals in pneumatic and hydraulic cylinders have the task of sealing the piston against the cylinder tube.

Dynamic Seals

Rod Seals

Rod Seals are primarily used in pneumatic and hydraulic cylinders and have the task of sealing the incoming and outgoing cylinder rod.

FST Static Seals Statische Dichtungen
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Static Seals

Portfolio Freudenberg Sealing Technologies

FST Deckeldichtungen Cover Seals

Cover Seals

Even if machine elements under pressure are firmly bolted to one another, there is still a so-called static seal gap that must be sealed.

FST Static Seals Statische Dichtungen O-Ringe O-rings

O-Rings

Endless O-Rings with a circular cross-section: O-Rings are among the sealing classics par excellence.

FST Hydrospeicher hydraulic accumulators
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Hydraulic Accumulators

Portfolio Freudenberg Sealing Technologies

FST Hydraulische Federungssysteme hydraulic accumulators

Suspension Systems

With individualized load adjustments using hydropneumatic systems, Freudenberg Sealing Technologies has succeeded in significantly reducing the incidence of vibrations and shock forces.

FST Hydrospeicher hydraulic accumulators

Hydraulic Accumulators

Hydraulic Accumulators are a basic component of hydraulic systems. They support hydraulic functions in a broad range of applications: from construction machinery all the way to the auto industry.

FST Special Seals Spezialdichtungen
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Special sealing products

Portfolio Freudenberg Sealing Technologies

FST Precision Molded Parts

Precision Molded Parts

Precision Molded Parts consist wholly of elastomer materials and offer high precision, tight dimensional tolerances and high surface quality.

FST Special Seals Spezialdichtungen Stopfbuchspackungen Stuffing Box Packings

Stuffing Box Packings

So-called Stuffing Box Packings have been tried-and-tested for extremely high temperatures and chemical resistance in pump and valve applications.

FST Applications
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Shaft construction

These applications employ sealing systems that are especially harmonized with one another. The combination of primary/secondary and piston seals, deflectors and the patented Merkel Guivex guide rings successfully handle peak pressures and extreme temperatures.

These applications employ sealing systems that are especially harmonized with one another. The combination of primary/secondary and piston seals, deflectors and the patented Merkel Guivex guide rings successfully handle peak pressures, strong lateral forces and extreme temperatures.
FST Applications
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Long wall support

The compact piston seal Merkel T 42 is intended for the absorption of high pressure in virtually static applications. By means of special designs and materials, this piston seal is capable of offsetting peak pressures of more than 250 MPa, besides offering a reliable service life.

(Main support cylinder, advancing rams/conveyor cylinders; cap/stabilization cylinders and aligning cylinders)
The compact piston seal Merkel T 42 is intended for the absorption of high pressure in virtually static applications. By means of special designs and materials, this piston seal is capable of offsetting peak pressures of more than 250 MPa, besides offering a reliable service life.
FST Applications
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Tunnel boring machines

The global market leader places its trust in Freudenberg Sealing Technologies' sealing expertise. Among other products, the rotation seal Merkel TBM 27 is employed in a multiple arrangement.

The global market leader places its trust in Freudenberg Sealing Technologies' sealing expertise. Among other products, the rotation seal Merkel TBM 27 is employed in a multiple arrangement. The highest expectations for functional security and longevity require endless sealing rings from Freudenberg Sealing Technologies with diameters of up to 10 meters or more. This need for large rings is satisfied with a special production process on a large-scale press.