Dots Music Shop's favourite valve oil.
The chemical name of PTFE is Polytetrafluoroethylene, and it is the most slippery substance on earth. It is found in many everyday usages such as non-stick pans, Gore-Tex rainwear and in dental floss. Its unique properties transform ordinary valve oil into an extraordinary lubricant, the microscopic particles acting as minute ball-bearings. It is just the thing for brass instrument lubrication.
It gives modern valves a very silky feel, is exceptionally long-lasting and remains unaffected by extreme weather conditions, so no more problems of slow, sticky valves in hot weather due to evaporation.
Its lack of residue makes it a great favourite amongst horn-players, who don’t want to be taking valves apart to clean out gunky residue.