These hoses are suitable for intercooler systems, intakes, water lines or similar. They can withstand up to 1 bar / 14.5 PSI of pressure and temperatures up to 220°C / 430°F. The wall thickness is 3.5mm. The silicone is highly durable and flexible, stable and retains its color even after many years of use. That's why many motorsports teams trust in BOOST Products hoses. Note: Silicone hose should not be used as fuel line, oil line or vacuum line for power brake systems.