"No more leaky collector gaskets.
Tired of your exhaust collector being leaky and making your exhaust louder than normal? Try a pair of these Mr. Gasket aluminum collector gaskets to get rid of the problem. They are manufactured from dead soft aluminum to easily conform to surface irregularities while providing a tight, leakproof seal. Mr. Gasket aluminum collector gaskets will not shrink, deteriorate, blow out, or burn out
. Ideal for race, street, towing, or motor homes, these Mr. Gasket aluminum collector gaskets will make leaky collector gaskets a thing of the past. "
But they will deform so much they will eventually leak.
My copper gasket on the other side looks just like new.