CRC Dielectric Grease helps improve electrical performance in adverse weather conditions and prevents rust and corrosion. It is a non-curing silicone compound that works well for electrical sealing, lubricating, and insulating electrical connections and components. Great for lubricrating and sealing O-rings and protecting electrical contacts. This Dielectric Grease is NSF H1 registered for use in areas where incidental food contact may occur. The Perma-Lock 2-Way Integrated Actuator is the most secure top on the market, with a secure spray straw that locks into place.