Isolates the accumulated condensate from the tuning lines, preventing corrosion and sticking of the inner wires. It is a relatively "stiff" grease with exactly the consistency that leads to an optimal movement of the pulls. Often used for sealing lubrication of trains whose precision is not optimal. At the same time, it is also an ideal grease for maintaining and greasing the tenon joints on woodwind instruments. The cork is protected from moisture and remains supple with ideal lubricating properties.