What is Kelsan® Keltrack®? Kelsan® KELTRACK® Trackside Transit is a water based liquid friction modifier applied using a Portec Rail Products Protector® IV Top-Of-Rail... EcoSafe® EHC 46-68 EcoSafe® EHC fluids are full- synthetic, non-aqueous hydraulic fluids that have passed Factory Mutual testing and are listed as.. EcoSafe® FR 46-68-100 EcoSafe® FR fluids are fully synthetic, non-aqueous hydraulic fluids that are Factory Mutual Approved industrial fluids. They can be used in industrial,