This 1/16" clear, smaller diameter dustwasher for Sanwa JLF is a popular choice amongst customization fans. At 38mm, this is the standard size of most common dustwashers and provides plenty of area to cover the joystick opening.
This version is sized for a Sanwa JLF joystick without shaft cover.
The dustwasher is protected from scratches and dust by a brown paper sticker. You can remove the paper sticker by peeling at the edge of the dustwasher with your fingernail, and pulling towards you.