I would like to report my experience with the silicon washers that Melodica-Me sent me; I have a vintage Clavietta that is estetically perfect but unusable due to plastic washer aging; virtually all the washers were brittle and broken; the leakage was so huge that it was a big mess to play it; I wrote to Oscar and I received a complete set of white silicon washers so I had the chance to give new life to my Clavietta; I spent one hour to change all the brittle washers; the new silicon washers perfectly fit to the original ones and after I finished I understood why there so hype about the Clavietta tone; it is silky and deep. A big thanks to Melodica-Me.