I have to replace some scat for my cabin heater and the builder had installed a material that looks like fiberglass mat on a orange silicone backing to protect it near the exhaust. Anyone know what this stuff is?
I would question the use of this or any other heat shield however for scat hoses. Recommend you look at a better routing for the hoses to solve the exhaust pipe proximity issue. In most cases the shortest route is not the best route.
Speaking of scat tubing, I have been wondering why Van's recommends running a bead of red RTV along the length of scat in the engine compartment. Anybody know about this?
I have to replace some scat for my cabin heater and the builder had installed a material that looks like fiberglass mat on a orange silicone backing to protect it near the exhaust. Anyone know what this stuff is?
No idea what it is without seeing it, but I simply used aluminum piece held on with red RTV for the same reason. I know of a builder (as do you BTW) that had his firesleeve burn due to having it too close to the exhaust, the firesleeve happen to be for his fuel line. I recall him telling me that one needs to have something over anything that is 6 inches from any exhaust. Thank God I have seen no issue with any of my SCATS or other hoses. I assumed the red RTV was to make the SCAT a little more solid so it did not bounce around in the engine area.By having it held with the RTV I have seen the hose stay pretty much where they were installed everytime I inspect them.
Pascal
Mark, the mat material may be fiberfrax , a ceramic fiber matrix you get from ACS. The FAA approved it for a replacement of asbestos on an antique I restored.