NS. Moisture-Proofing Non-Conductive Lubricant - NSF H1 A premium silicone grease for use in a wide variety of applications. MP SILICONE GREASE is ideal for lubricating and moisture proofing marine, automotive - cars & trucks, aircraft ignition systems, electrical assemblies, cable connections, battery terminals and spark plug connectors. It can also be used as a release agent and lubricant for both plastic and metal parts. The low volatility and inert properties allow it to be used on a wide range of elastomers and plastics.