The plastic like to squeak after a few years.... not much you can do about it....I speak from experience
I promise that mine will not do that. There are a few reasons but the first and most important is the use of the word "plastic" to indicate a specific engineering grade of a high performance polymer. Plastic is like steel. There are 100's of varieties and alloys, and grades. To use steel to decribe high performance 300M for stupid strong axle shafts while accurate in that they are steel, it does not tell the whole story. In the same way, using plastic to assign any attributes to my acetal pucks is the same. They don't and won't squeak because there is a reasonable level of lubricity if you were to let the fasteners get loose. They are a very compression resistant grade of material with great mechanical strength and other properties that make them pretty darn ideal for what I'm using them for.