Case Study: Fiber-reinforced hose of Vamac® and Kevlar® built for heavy-duty service
Vamac® ethylene acrylic elastomer and Kevlar® aramid fiber contribute to service life goals in heavy-duty engine cooling system hoses.
Application Description
Heavy-duty engine cooling system hoses with service life goals of 1,000,000 km (620,000 mi).
Materials Selected and Why
Compounds of DuPont™ Vamac® ethylene acrylic elastomers are chosen because they:
- Are rated for service up to 175°C (357°F), and can withstand excursions up to 200°C (392°F)
- Stay flexible and provide vibration damping at temperatures as low as -40°C (-40°F)
- Resist chemicals, oil, oxidation and mechanical abuse
DuPont™ Kevlar® aramid fiber was chosen because it reinforces the hose and increases burst strength.
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