Trombone

The trombone is actually closely related to the trumpet in sound, though it does not change pitches with a system of valves, but rather with a movable slide which is used to change its length. This is where polymers come in. Slide cream is used to help the slide move smoothly, quickly, and quietly from note to note.

Here you see a container of slide cream for a trombone.

Another type of slide which all brass instruments have is the tuning slide. This is a section of pipe which can be adjusted to tune the horn to other instruments by slightly changing the length of the entire horn. This slide of course also needs lubrucation but with slide GREASE. These oils greases and creams cane be made of a natural oil product like petrolium or they may be made of synthetics like