Freudenberg Sealing Technologies Mobile Machinery Construction
Freudenberg Sealing Technologies Construction

Mobile Machinery


Taming the toughest environments

Sealing solutions for the global construction industry

Construction and mining machines operate in the most diverse, challenging, and demanding environments around. Freudenberg Sealing Technology offers industry-leading solutions.

Cassette axle seals

FST Kassettendichtungen Cassette Seals

For example Cassette axle seals, that resist mud, water and other invasive media, along with fluid power seals made of elastomers, urethanes, and PTFE for sealing high-pressure hydraulic systems. Our experience ensures a reliable solution for any sealing need – as does our ability to work as an extension of the customer’s engineering team. Downtime equals lost profit. Freudenberg Sealing Technologies’ innovative line of polyurethane hydraulic cylinder seals ensures thousands of hours of uptime and high reliability.

Operator safety and comfort are the focus for construction machines. Rough terrain not only causes driver discomfort. It can often make equipment operation dangerous as well. Freudenberg’s accumulator suspension systems stabilize the cab, maximizing operator comfort while minimizing the effect of the terrain in all types of equipment.

Sealing Solutions for Mobile Machinery

Sealing solutions for mobile machinery in the agricultural and construction industry

For decades, cassette seals from Freudenberg Sealing Technologies preserve for long service life: in all weathers, in any environment.

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The high demands of today’s construction leave no room for error. Infrastructure projects will increase globally to satisfy a growing population.


New Polyurethane generation for mobile Machinery. New high.performance material is versatile and increases operating life and resistance to wear.



Relevant products and applications in this market segment

FST Dynamische Dichtungen Dynamic Seals

Dynamic Seals

Portfolio Freudenberg Sealing Technologies

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.

FST Dynamische Dichtungen Dynamic Seals Dreh-/Schwenkdichtungen Pivoting Motion

Rotary and Swivel Seals

It is the combination of operating conditions that put Rotary and Swivel Seals to the test. They must withstand pressure loads similar to those in hydraulic cylinders.

Dynamic Seals

Radial Shaft Seals

While Freudenberg Sealing Technologies invented the Radial Shaft Seal, we haven't stood still. The Simmerring® continues to meet the ever-changing and demanding needs of our customers.

FST Dynamische Dichtungen Dynamic Seals Damp Seal

Damp & Seal

The Damp & Seal damper seal from Freudenberg Sealing Technologies combines three functions into a single component.

Dynamic Seals


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

Dynamic Seals


The requirements are high. Freedom from leakage is not only a "must" for drive shafts in shipping. Cleanliness is also of utmost importance in the paper industry with its high-speed rolls.


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

V-Ring Seals and Deflectors

V-Ring Seals and Deflectors must withstand a great deal. So Freudenberg Sealing Technologies had to come up with something special to meet heavy industry's often high expectations in this area.

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

Static Seals

Portfolio Freudenberg Sealing Technologies

FST Static Seals Statische Dichtungen O-Ringe O-rings


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



Gaskets produced by Freudenberg Sealing Technologies are designed as an integral part of a sealed system.

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 Special Seals Spezialdichtungen

Special sealing products

Portfolio Freudenberg Sealing Technologies

FST Diaphragms


Diaphragms may be used in an array of applications, including pumps, actuators, hydro-accumulators, valves, and regulators.

FST Boots


Single- and multiple-convolution boots are protective seals for socket joints, ball joints and articulated shafts.

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 Applications

Asphalt Paver

A paver (paver finisher, asphalt finisher, paving machine) is a piece of construction equipment used to lay asphalt on roads, bridges, parking lots and other sites.

FST Applications


Referred to as a crawling digger; it is a vehicle designed to dig or move large objects.

FST Applications

Backhoe Loader

A backhoe, also called a rear actor or back actor, is a type of excavating equipment or digger employing a digging bucket at the end of a two-part articulated arm.

FST Applications

Mining Excavator

Used for excavating earth and rocks and loading them onto a dump truck.

FST Applications

Skid Steer Loader

Also known as a skidsteer, it is a small, rigid- frame, engine-powered machine with lift arms used to attach a wide variety of labor-saving tools or attachments.

FST Applications

Mining Truck

Off-highway, rigid dump trucks specifically engineered for use in high-production mining and heavy-duty construction environments.

FST Applications

Motor Grader

A grader, also commonly referred to as a road grader, a blade, a maintainer, or a motor grader, is a construction machine with a long blade used to create a flat surface during the grading process.

FST Applications

Crawler Dozer

Also referred to as a bulldozer; it pushes earth and rocks with a blade at the machine’s front end.

FST Applications

Wheel Loader

A wheel loader is type of heavy equipment used to move aside or load materials such as asphalt, demolition debris, dirt, snow, feed, gravel, logs, raw minerals, recycled material, etc. into or onto another type of machinery.


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