ESRON GREY is a high performance, sensor-safe, odourless and with superior adhesion and flexibility High Temperature RTV Silicone Gasket Maker available. It is non-corrosive to electronic metals, including copper and brass. This 100% RTV silicone gasket maker makes reliable forms in-place gasket and seals on a wide variety of surfaces. Able to withstands temperatures range range from -80°F to 625°F (-62°C to 329°C) intermittent.