CRC Kontakt 40 The Kontakt 40 is a contact cleaner designed to get into the fine pores of your electrical contacts. The silicone free, multi-purpose cleaner and lubricant creates an almost invisible film when sprayed. Features and Benefits Colourless once dry Low viscosity Does not convert into resin Outstanding corrosion protection properties Universal multi-purpose oil Typical Application Protect your contacts from rust Loosening rusty screws Cleaning and maintaining sensitive measuring equipment Lubricate your hinges, joints and sliding guides