Ripmax Silicone Tube is tough, extra flexible and heat resistant. The larger sizes are ideal for joining tuned pipes to manifolds, extending exhausts through cowls and for marine silencing systems. On complicated models such as ducted fan powered jets or twins, colour code your installation by using our red tubing for exhaust pressure lines and blue for fuel lines to make identification simple. Or just use the coloured tube for the fun of it. This material has great resistance to kinking and it will not harden with age.