windsheild rubber?

I remember a while back a guy was talking about replacing the gasket and he used a old one, what he did was find a car with the gasket he needed and bust out the windshield then soak it in Hot water for a peoriod of time which makes it pliable again then he installed it. I do not know if this will work but I remember reading about, of course the hard part is finding a doner car.