This has long been a favorite! United 139 is a low-odor dry spray containing PTFE for great lubricity. It’s colorless and stainless and acts as a great mold release agent. It is the perfect release agent because it provides very efficient lubrication without the dangers and inconveniences of oily silicones or messy graphite. United 139 retains its lubricating power at extreme temperatures from minus 100°F (-73°C) to over 500°F (260°C), and resists flushing with water or solvents.