Dow Corning 111 Valve Lubricant and Sealant can be used as a lubricant for rubber and plastic O-rings, water softener and faucet valves, valve stems for potable water, aircraft vacuum systems, electronic and ignition systems, among others. It can be used as a sealant in applications such as vacuum and pressure systems, equipment subject to washing and harsh environments, electrical service entrances and underground connections, and transformer gaskets and equipment enclosures.