Sorry guys, I meant cork. I also study particle physics as a hobby and quark and cork are pronounced very similarly and I made a mistake when typing since I have recently been reading a lot about "quarks".
What I meant was it felt as though it was a "cork type" material, being that its composition was hard, but soften than metal. As carbking said, "Fiber compound" would have been a better description. I ask because I also saw the product for sale that Tim gave the link to and the description doesn't give the material form which it is made. It appears to be some type of plastic and I don't want to waste money on something that won't work correctly. We all know how many "gasket" type parts are made cheaply and ineffectively, like for example the cheap plastic intake manifold gaskets for 5.7 Chevrolet Vortecs which fail almost before you put them on. I'm aware this isn't a gasket but it does connect two flat surfaces of metal.
