Originally Posted By: Colt45ws
Plastic must have been better then or something. They turn brittle and crack within a couple changes in my experience. I dont trust them at all and threw all the ones I seen out. Even the vehicles that was the proper gasket for I substituted a rubber/metal hybrid gasket.
Possibly, but the one I used on my Accord for ten years, until it cracked, came from one of those assorted "HELP" blister card packs. I eventually replaced the plug on the Accord with a Fram Sure Drain valve. It came with a copper washer that would not seal, period. I ultimately used on of my plastic washers on it and it was good for all the years afterward until I got rid of the car. The washer on my Fumoto valve that I just installed on the Mazda is some kind of fiber/plastic thing. I didn't have to make it terribly tight to form a good seal.