Lower Friction, Weight, and Emissions – The Freudenberg BlueSeal

Freudenberg-NOK Sealing Technologies has begun supplying innovative, lightweight radial shaft seals to a major Detroit-based vehicle manufacturer for installation on the V6 and V8 engines powering its newest pickup trucks and sport utility vehicles (SUVs).  Enter the Freudenberg BlueSeal.

The BlueSeal, part of Freudenberg’s award-winning Low Emission Sealing Solution (LESS) portfolio of engine, transmission and E-Mobility product solutions, provides significant weight, friction and installation advantages over traditional radial shaft seals. Under the contract, Freudenberg-NOK will produce more than 2 million BlueSeals annually. Production is expected to increase further to more than 4 million units annually with orders from additional customers.

40 percent lighter and 50 percent less space to install

From turbocharged engines and 10-speed transmissions topicture of blueseal electrified and electric vehicle systems, the propulsion technologies on display at the 2019 North American International Auto Show (NAIAS) offer evidence that fuel economy, emissions and performance are still top of mind with manufacturers and consumers alike. Freudenberg’s BlueSeal offers customers a way to help achieve better fuel economy and lower emissions in large displacement internal combustion and turbocharged engines. The BlueSeal is 40 percent lighter than conventional radial shaft seals and requires 50 percent less space to install.

“Vehicle manufacturers are looking at every possible way to increase fuel efficiency and reduce weight, especially in trucks, SUVs and turbo-charged performance vehicles,” said Jeff Nelson, vice president, Automotive Sales, Freudenberg-NOK. “Even the smallest components can have a dramatic impact on the function and efficiency of vehicle powertrains.”

The BlueSeal is made of a single material – a steel-reinforced Polytetrafluoroethylene (PTFE) – designed to withstand harsh engine fluids while providing an axial space reduction, which allows manufacturers to downsize the engine. The seal has a low-friction Power Optimized Polytetrafluoroethylene (POP®) lip design that insures smaller dissipation loss, reduces the temperature in the contact area between the seal and shaft and performs flawlessly under different engine conditions.

Dual product development strategy for the automotive industry

The BlueSeal increases durability through its perfect sealing behavior and has a higher resistance to pressure than traditional seal designs. Its R-Tight® technology results in near-zero air leaks during assembly tests, allowing manufacturers to isolate other potential leak paths in the system.

Freudenberg is pursuing a dual product development strategy that supports continued development of advanced materials and components for internal combustion powertrain applications while pursuing new technologies that address emerging challenges associated with alternate mobility options like lithium-ion batteries and fuel cells. The BlueSeal, like many of Freudenberg’s LESS products, offers system benefits in both arenas.

“The automotive industry is undergoing profound transmission and driveline changes,” Nelson said. “It is our job to provide customers with exceptional component solutions that address the needs of all mobility platforms regardless of the fuel they use. The need to harness energy effectively and efficiently is a common denominator across our development efforts.”


The original article can be found on Freudenberg’s website.

To learn more about Freudenberg products, speak to a Gallagher representative today by calling 1-800-822-4063