Fluoro Lined Silicone Hose
Because silicone rubber is permeable to hydrocarbons, fluorosilicone liners
are often used in automotive applications to prevent oil seepage through the
hose wall. This seepage could otherwise swell and damage the hose and also leave
a sticky deposit on the outside of the hose that attracts dirt. It has stable
physical properties throughout the operating temperature range of –55°C to
250°C. The fluorosilicone results in a product that does not become brittle at
low temperatures or excessively soft at high temperature.
Uses: Fluorosilicone lined turbocharger and intercooler hoses are often
specified for use on engines that have to meet Euro 3 and 4 emission levels and
therefore have crankcase oil mist recirculated through the induction
Nomex Reinforced Silicone Hose
Silicone Nomex hoses of are available in various shapes that use a peroxide
vulcanising system, high temperature stable iron oxide pigmentation and
meta-aramid fabric reinforcement to achieve suitable working temperatures of up
to 220°C and intermittent exposure up to 250°C.
turbocharger outlet, hot side intercooler hoses, and EGR
Glass Fibre Reinforced Silicone Hose
These hoses are reinforced with a fabric made from woven glass roving which
unlike meta-aramid will maintain its strength at temperatures well in excess of
350°C. The silicone rubber used is an enhanced compound with additional
stabilisers designed for extreme temperature use. Hoses made with these
materials will work at 230°C continuously and will also withstand intermittent
exposure to temperatures of over 300°C.
We do not recommend glass
reinforced hoses for severe dynamic applications; metaaramid is superior in this
respect although its temperature capabilities are slightly lower.