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Automotive Powertrain Seal Rings

Rubber O Ring Seals

Seal Ring Applications for Automotive

Minnesota Rubber & Plastics has been an automotive seal ring supplier to numerous OEMs for over 25 years. Annually, we produce 20 million seal rings for fuel, electric and PHEV powertrain system applications, CVT and clutch applications.

All powertrain systems rely on high-performance thermoplastic seal rings to maintain pressure and keep precision parts lubricated while working flawlessly. Sealing failures can turn expensive powertrains into scrap metal.

Benefits of Automotive Seal Rings for Fuel, Hybrid and E-Powertrain Systems

What are powertrain seal rings?

Modern powertrain systems are costly to develop and test. Internal components rotate at high speeds and generate a range of temperatures, some of them scorching.

The seal rings must have expertly engineered geometry to meet OEM target leakage rates, pressure, temperature and speed specifications. These critical components are essential in allowing the powertrain to shift smoothly—and optimize mechanical/friction efficiencies. In a torque management application, the seals ensure precise hydraulic actuation. (The tighter the seal, the more accurate hydraulic control.) 

Design engineers turn to Minnesota Rubber & Plastics to help them design, test and manufacture these precision-molded plastic seal rings.

Material science: Ensuring our powertrain seal rings perform under high temps

Through extensive research within our advanced materials lab, we ensure our powertrain seal rings are optimized for the heat and pressures generated by fuel, electric and PHEV powertrain systems and other torque management systems. We study the relationship between material structure, its properties, how processing affects characteristics, and how the materials perform in an application.

Molding and manufacturing: Creating the perfect powertrain seal

Engineers must analyze and optimize the injection molding steps needed to build a perfect seal ring before mass production. This step is essential to optimize gate location, ensure cavities are filled uniformly, evaluate various materials, and to identify potential visual defects. For these reasons, more engineers turn to us for our superior capabilities with tight-tolerance dimensions.

A scientific approach to molding is critical for developing optimum control of the injection molding process, which includes constant monitoring of cavity pressures. Tooling is also important because part quality directly impacts sealing performance.

PEEK Seal Ring

PEEK Seal Ring

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