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Fluoropolymer applications in a car

The automotive industry is constantly changing and being influenced by a number of megatrends such as extension of environmental protection, the emergence of megacities, and an aging but more active population with an increasing demand for mobility.

These megatrends translate into requirements like more efficient cars with reduced emissions, the development and application of alternative energy sources or advanced driver assistance and safety systems in the private transport sector.

3M™ Dyneon™ Fluoropolymers enable design engineers in the automotive industry to adapt to these trends and develop reliable and efficient solutions.

They are the first choice for fuel and power train systems because of their effectiveness as barrier materials against evaporating emissions. Additional benefits are their chemical resistance to a broad variety of lubricants and fuels at elevated temperatures over the vehicle‘s lifetime, thus guaranteeing highest possible safety, based on extraordinary product quality.

Power Train

The term "power train" refers to the components of the vehicle that generate power excluding the transmission and turbocharger which are addressed on separate pages.

Automotive power train sealing is facing different challenges today:

  • extended service life warranties
  • new combustion technologies leading to higher engine temperatures
  • continuously tightening legislation

These conditions demand more from power train seals than in the past.

Due to their excellent chemical and temperature resistance 3M™ Dyneon™ Fluoropolymers offer improved sealing and wear resistance. This is vital as aggressive media such as gear lubricants, transmission fluids and engine oils are commonly used.

Important applications for Dyneon Fluorpolymers in the power train segments are shown below:

Fuel Systems

Today's fuel systems contain different components which have to constantly cope with a number of different fuels and aggressive solvents as well as wear and tear.

The requirements for polymers used in those applications are increasing as:

  • regulations around the world continue to adapt more stringent fuel emission standards which have the target to eliminate vapour emissions,
  • long-term sealing durability is getting more important as service intervals and warranties are extended,
  • broader variation of fuel formulations with more aggressive ingredients are getting popular,
  • thermal performance ranges for sealings are increasing due to downsizing of the engine compartments.

3M™ Dyneon™ Fluoropolymers are preferably used in fuel system applications due to their:

  • excellent permeation resistance
  • effectiveness as barriers against evaporative emissions
  • chemical resistance to a broad number of fuels (including biodiesel)
  • long-term sealing capability
  • thermal resistance over a broad service temperature range (- 50 °C to + 230 °C).

Typical fuel applications for Dyneon Fluoropolymers include:

Exhaust Systems

Catalytic converters have been mandatory in the exhaust system of combustion engines for many years now. Among the most important applications, lambda probe seals play an important role, next to bonded seals, diaphragms, exhaust mounts and O-Rings.

Immediate engagement without delay at the start of the engine and the ability to withstand high temperatures, outline the need for high-performance materials. The Dyneon product range offers just the right materials for the different applications in the exhaust system.

Typical applications for 3M™ Dyneon™ Fluoropolymers:


The term "transmission" includes those parts of the drive train which convert the power of the engine (speed and torque) to the axle and the drive wheels.

Transmission system are impacted by changing requirements regarding emissions, weight reduction and fuel economy paired with optimised performance.

New transmission concepts come along with constantly changing requirements with respect to sealing materials. Dyneon‘s wide product portfolio enables automotive design engineers to develop solutions that withstand challenges over a vehicle‘s lifetime.

Typical applications for 3M™ Dyneon™ Fluoropolymers in the transmission:


The chassis of the vehicle comprises the frame, including the suspension system, and the mechanical connections between the car components.

More aggressive environments and increasing requirements over a long lifetime of the vehicles in different climates ask for fluoropolymers with uncompromising performance.

Typical applications for 3M™ Dyneon™ Fluoropolymers in the chassis:

Car Electronics

Electronic systems have gained importance in automotive applications to a dramatic extent in the last decades.

Many new applications for fluoropolymers have been established in engine, transmission and chassis electronics, safety and driver assistance systems as well as car infotainment systems.

Typical applications for 3M™ Dyneon™ Fluoropolymers in car electronics:

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