Next week (W/c 7 july) we will make our first run of machined piston seals for the Vectis in grade ‘A’ EPDM that we fly in from Germany to offer as a premium replacement part. Yes they are expensive, but most of our customers are increasingly time poor and the real cost to them of changing piston seals is their time. With this in mind we are committed to continuously improving all of our products to extend service intervals and improve the performance in the cup. Even a slight amount of blow by on a piston seal has a significant detrimental impact on the taste in the cup