This windage tray includes molded rubber gaskets on the top and bottom for a one-piece design. The windage tray is made from glass filled nylon & molded rubber (modern materials that hold up to heat & oil). The molded rubber gaskets don't need any RTV, so future service is easy (no scraping off old gaskets and replacing them each time the oil pan is removed). The re-usable windage tray / gasket can be washed w/ soap & water. Made in the USA