By Cameron Chai
Silastic brand of silicone and fluorosilicone engineered elastomers is
offered by Dow Corning for application in today’s turbocharger hoses, including
crossover and intercooler hoses. These elastomers feature improved adhesion
properties that helps to decrease processing costs and enhance service
reliability for high-strength turbocharger hoses.
Silastic elastomers offer two major benefits in today’s turbocharger hoses:
they surpass the performance of several organic elastomers in harsh operating
situations and the enhanced inter-layer adhesion enables efficient and
cost-effective co-extrusion processing, according to Son.
Silastic engineered elastomers are available as heat-cured standard compounds
for direct use. These materials can be custom-made to address special processing
requirements. For today’s turbocharger-hose uses, suggested elastomers include
fluorosilicone rubber (FSR) compounds for inner layers of hoses and high
consistency silicone rubber (HCR) compounds for hard, heat-resistant outer
The enhanced silicone and fluorosilicone engineered elastomers has an ability
to resist higher underhood temperatures about and over +200°C. They maintain a
high burst strength at extreme pressure and remain flexible in freezing cold
with less hardening, brittleness or hardening. Several organic elastomers get
deformed and softened at temperatures greater than 100°C and turn fragile at
temperatures less than -25°C. Dow Corning’s silicone and fluorosilicone
elastomers can be co-extruded in a cost-effective way with the use of the
patented technology. In addition, the technology enhances reliability, strength
and integrity of hoses.