Multi-application - suitable for degassing urethanes, silicone, epoxies, stabilizing wood, filling molds, extracting essential oils from organic materials, etc. Strong and durable stainless steel container with chemical-resistant silicone gasket Maximum Rated Vacuum: 29 inHg at sea level Maximum operation temperature: 160°F Every chamber is tested before shipping and lose no more than 2.5 inHg/24hrs