Wiktionary
dustproof
a. Resistant to dust.
Usage examples of "dustproof".
Shelves lined the inside walls of the van, but they were bare and sheathed in dustproof plastic.
They sent her to the cargo-loading area, where she was proudly shown the dustproof antigrav castors Scotty had designed for the baggage-handling carts before being redirected to the spaceport’.
The chief engineer insisted on making sure the Bean’s antigrav engines really were completely dustproof, and that it had at least a crude semblance of its own internal navigations system, so it didn’t have to depend on leaping up above the dust layer to find out where it was.