C.R. LAURENCE SR200 CRL Silicone Remover and Surface Preparation. CRL Silicone Remover/Surface Prep is an ozone-safe volatile methylsiloxane (VMS) fluid developed specifically for use as a cleaning agent and carrier. It is safe for use on a wide range of materials including plastics, metals, painted surfaces, and elastomeric materials. Its mild cleaning action also makes it suitable for cleaning multi-material components and devices.