Under main gear washer

[The Great Maudu]

I was reading about using acetal or delrin for the washer under the main drag and under the star wheel. What thickness are these?  Where may they be obtained?  Thank you,
TGM

[Shark Hunter]

You can order them from Dawn at Smoothdrag.
You can also order a sheet from Mcmaster Carr if you desire.
I use the .030 for larger reels.