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Foundation of Modern Buildings
Sealing Solutions for Efficient Building Technology
Construction is underway all over the world. In China, Dubai and North America, rows of new skyscrapers are growing into the sky. Depending on their purpose, they offer living space and jobs for millions. Single-family homes are being built in suburbs, production halls and business premises in commercial areas.
Innovative sealing technology is in demand everywhere: for heating and cooling, for water and energy supply, for passenger and freight elevators and much more. Freudenberg Sealing Technologies knows the trends in building technology and understands the technical requirements and different regional legal requirements and specifications. As a leading market and technology specialist in sealing technology, we offer a wide range of customized sealing solutions to manufacturers of building systems.

Polyurethane Power Tool Seals
Power for Your Workmanship
No matter whether it’s a rotary hammer, a grinding machine, a chain saw, a high-pressure cleaner or a lawn mower. No matter whether it’s powered by electricity, petrol or compressed air. No matter whether the power is wired or wireless.
Sealing solutions and components from Freudenberg Sealing Technologies always help make work with power-driven tools easier, faster and safer. Thanks to their unique material and design expertise, they combine maximum performance with long service life and service life in a wear-resistant, heat-resistant, PAH-compliant and cost-efficient manner. This benefits companies and specialists in trade, construction and industry as well as ambitious DIY enthusiasts.
Depending on the requirement, there is the option of a very wear-resistant HNBR with different hardness (application at higher temperature of 120˚C-150˚C). Furthermore, this material has very good bumping properties.
Reducing, Integrating, Optimizing
Reduce weight, size and cost. Integrate multiple functions into one part. Optimize ergonomics. Maximize speed, performance and durability. Guarantee global availability.
The demands placed on all types of power tools, from electric cordless screwdrivers to gasoline-powered lawn tractors, are constantly growing. Freudenberg Sealing Technologies has the development and technology expertise, innovative strength and global presence to offer industry-, region-specific and customized solutions. Completely independent of the drive technology of the tool.

Full Speed Ahead
Overcoming the toughest resistances with penetrating power, whether it’s made of concrete or stone: With seals and molded elastomeric parts from Freudenberg Sealing Technologies, drilling and demolition hammers are in the best hands. Robust and wear-resistant, they ensure 100% performance and a long service life for drilling, chiseling, tearing and removal. With the aid of first-class, PAH-compliant sealing materials developed and manufactured in-house.
Dust caps with several wiper edges resist dirt and dust. Impact cams dampen, protect and prevent damage. Hexagonal geometries offer protection against contamination. Striker seals and wipers protect the gearbox from dust and prevent lubricant from escaping. T-ring seals combine reliable sealing with up to 80% reduction friction compared to o-rings.
Applications in Which Our Parts Are Used
Small Engines for Lawnmowers

- Oil Seals- Advanced FKM design for improved performance and increased lifetime.
- Lube & Seal - Oil seal with Klueber grease for low friction.
- Valve Stem Seals - With patented design for “blow-by” control and improved oil metering.
- Gaskets - Metal stamped gaskets.
- Fuel Injection Armatures - Metal bonded spec with or without RFN treatment for low friction.
- Carburetor Diaphragms- Disperse Fabric Technology. (DFT)
Chain Saws / Blowers / Trimmers
- Oil Seals – Advanced FKM design for improved performance and increased lifetime.
- Lube & Seal - Oil seal with Klueber grease for low friction.
- Gaskets - Metal stamped, metal carrier side bonded seal and rubber gaskets.

Robotic Lawnmowers
- Modular Plastic Sealing Concept – Unique plastic radial Shaft seal with optimized lip design for water and dirt protection.
Batteries for Outdoor Power Equipment
- Thermal Heat Shields – Round or flat cell heat protection against thermal runaway.
- Gaskets – Special profiles and solutions compatible with the toughest applications.
- DiaVent – Pressure regulating valve.
- Gaskets - Metal stamped gaskets.
- Fuel Injection Armatures - Metal bonded spec with or without RFN treatment for low friction.
- Carburetor Diaphragms- Disperse Fabric Technology. (DFT)
More information can be found in the “Related Documents” section down below.
Rotary Hammers and Breakers
- Oil Seals- catalog and customized dimensions available.
- PSS Premium Sine Seal
- Blue Seal® “Full” PTFE Design
- CMS® Contact Minimized Seal
- Lube & Seal - Oil seal with Klueber grease for low friction.
- Striker Seals - Effectively separates lubricant and air side for longer life of the tool.
- T-rings - Providing up to 80% less friction than an o-ring.
- Dust Caps - Several scraper edges against dirt and dust with integrated impact cams to prevent damage.
- Bumpers- Polyurethane or elastomer solutions for longer life and softer feeling in hand (DFT).
- PTFE Products - Seal/bearing/guiding element/wiper materials.
Nail Guns
- Bumpers - Polyurethane, HNBR and FKM.
- T-rings - Providing up to 80% less friction than an o-ring.
- Meander Spring - Integrated molded spring for gas injector (Gas Powered Cordless Nail Guns).
- O-rings
- PTFE Products - Seal/bearing/guiding element/wiper materials.
Battery Applications
- Thermal Heat Shields - Round or flat cell heat protection against thermal runway.
- Gaskets
More information can be found in the “Related Documents” section down below.

Spray Guns
- Integrated Molded Components for nozzles and valves.
- O-rings made of FFKM (Simriz®) and FKM.
Water Pressure Valves
- Oil Seals - Advanced FKM design for improved performance and increased lifetime.
- Lube & Seal - Oil seal with Klueber grease for low friction.
- Elastomeric and Fabric Reinforced U-cups.
- O-rings - PU and elastomer.
- Accumulators.
More information can be found in the “Related Documents” section down below.
Related Documents
-
FFKM Simriz® High Performance Material in Extreme Conditions
Unique Material Structure Provides Reliable Sealing Performance in All Environments. -
Power Tools and Outdoor Power Equipment
With a global presence, Freudenberg seals and components are used worldwide in many power-driven tools from specialist equipment developed for trades, construction and industry to the tools designed for ambitious do-it-yourself enthusiasts. -
Levitex Whitepaper
With the new Levitex seal, the loss of performance for a crankshaft seal is up to 90 percent less than for a standard PTFE seal. -
Lube & Seal® for Power Transmission Engineering
Enhanced and prolonged sealing with Klüber Lubrication and Freudenberg Sealing Technologies.
-
New Polyurethane Generation
Freudenberg Sealing Technologies expands the boundaries of use with a new polyurethane generation to all standard and commercial polyurethanes. -
Simriz® 495 - General Purpose
Simriz® 495 performs well in a wide variety of harsh chemicals as well as under overheated steam and hot water conditions. Especially its outstanding performance in strong acids and oxidizers makes Simriz® 495 the perfect match for nearly every application in the chemical process industry. -
FNST Hammer Drill Application
Freudenberg–NOK Sealing Technologies has been involved in the power tools market for decades and understands what really drives the industry. -
FNST Lithium Battery Heat Shields
Freudenberg Sealing Technologies heat shields are an easy-to-implement solution for improving battery safety. -
Hammer Drill Application
Freudenberg Sealing Technologies has been involved in the power tools market for decades and understands what really drives the industry. -
Lithium Battery Heat Shields
Freudenberg Sealing Technologies heat shields are an easy-to-implement solution for improving battery safety. -
FNST RFN™ Treatment
Sealing components made of elastomeric materials can have inherently high surface energies (tackiness) and a high coefficient of friction (COF). -
RFN™ Treatment
Sealing components made of elastomeric materials can have inherently high surface energies (tackiness) and a high coefficient of friction (COF). -
The Simmerring® MSS 1
The MSS 1 Simmerring® is a unique, patented sealing system with proven functionality in different gearbox and pump applications and with a service life time up to 20,000 hours. -
Solenoid Valve Plungers
Solenoid plungers from Freudenberg are available in numerous designs and have been tested to meet rigorous performance requirements for solenoid valves. -
Modular Plastic Sealing Concept MPSC
Design for application in units with low thermal strain and without pressure differences preferably in combination with plastic housing for sealing of power units and gear boxes. -
FST Identify Stage Bulletin 2019
RD17001 – Laboratory Study of DFT & Fabric Composites for DIN EN549 in Flat Sheet Mouldings

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