How do you install a donut gasket on a 95 ford escort?

first off get some WD-40 and some deep well sockets that will fit the nuts on the exhaust. Make sure you soak the nuts well with the D40 because they lock to the threads because of the heat. Once you get the nuts loosened set the new gasket into the inset depression on the pipe and tighten just make sure you don't over thighten the nuts or they will snap off and then you have major problems.