this is the original product for the Mansfield 160 toilet fill valve. This toilet is being discontinued and parts are getting hard to find, but if you can find an extra part for it start a toilet box repair kit and you will be find for quite a few more years. Easy to install and your fill valve only needs the shank washer at bottom and it will be like new.
If you are having problems with a Mansfield toilet that uses this part, than repair it your self. Directions are on the back of package and after you remember to turn off the water supply, it will take about 90 seconds to change. The only other gasket on this model Mansfield is under the flush valve and can also be change easily. Save time and money and do this repair your self.