Hi guys,   took My old Oil pump apart. It has been working Really good for years.    However I noticed that there is no gasket between the two “halves” of the pump housing.    I have another pump from a broken engine which has a worn gasket. Don’t know anything about the other pump other than it gomes from an engine that blew up.    Question: did all pumps come with a gasket ? Is it ok to continue with the old pump without a gasket or should I take the old pump apart and fit a gasket to it?    Thanks :-)