Boeshield T-9 Rust Protectant was originally developed by Boeing Aviation to provide long term corrosion protection on aircraft metals. T9 is based on a solvent and wax formula. It works by penetrating metal pores to displace moisture. The spray dries to a thin film to protect metal surfaces. Popular in the marine industry, boaters use it to protect deck hardware, engine components, batteries, and electrical connections. T-9 is non conductive and won't cause short circuits.

Woodworkers use Boeshield to protect woodworking tools, as it won't transfer to the wood piece or cause problems with finishes.