Bonded piston seals, shaft seals, oil seals and shaft boots made with DuPont™ Vamac® are a proven part of the performance envelope for modern vehicle drivetrains.
Many of today’s vehicle drive train systems are designed as a sealed tight system for reduced maintenance/zero maintenance for the life of the vehicle warranty.
Bonded piston seals, shaft seals, oil seals, shaft boots and other elastomeric components parts must provide the fluid resistance and grease resistance to retain physical properties for long-term performance at both high and low temperatures for the life expectancy of the vehicle.
The ability of Vamac® to form a lasting bond with plastic or steel provides additional lifetime value and criteria to meet the longer requirements.
Other related automotive applications that use Vamac® are:
Properties Made For Piston Seals
The Vamac® product line has four grades and families that include standard grades (G, GLS, GXF and DP) and the Ultra family with improved performance designed for precision applications in blow molding, compression molding, and extrusion, while also providing excellent, bonding to metal and plastics. , The product family also includes specialty performance grades for low oil swell, high green strength, and/or no-post-cure.
Downsized engines require incorporation of power-boosting technologies, such as turbocharging and exhaust gas recirculation (EGR), to improve fuel economy without sacrificing performance. Vamac® provides the flexibility of rubber with resistance to the high heat and harsh chemicals that these technologies entail. OEM’s and drivetrain designers along with component suppliers are constantly working to reduce weight increase fuel efficiency while obtaining more power from smaller turbocharged engines.
That puts a premium on consistent quality and application-specific performance, and makes DuPont™ Vamac® ethylene acrylic elastomer (AEM) a material of choice. It is specified for bonded seals, shaft seals, boots, and other vital parts by large OEM suppliers and by many OEM’s.
Key properties that are a good match for bonded piston seal applications include:
Key overall Vamac® properties include:
Vamac® is a versatile family of ethylene acrylic elastomers (AEM), material, that delivers consistent, rubber-like flexibility over wide temperature ranges, and with exposure to oil and greases.
Support and Quality Worldwide
DuPont is a global automotive materials supplier, working locally with parts and vehicle makers in every region. DuPont is committed to the highest standards of quality and global supply, supported by regionally based innovation centers, technical support and manufacturing.
Vamac® application experts provide knowledgeable technical support, from material selection to end-use testing, across four continents. For global manufacturers, there’s also peace of mind in knowing that seals evaluated and tested in one region can be commercialized in another region.
*The Viton® fluoroelastomer business is now part of The Chemours Company. Visit chemours.com for more information.
*For information on Neoprene, contact http://www.denka.co.jp/eng/organic/product/