Funnel is designed as a dual purpose device. It can easily dry air sensitive compounds with inert gas or be used as a pressure filter funnel. The threaded top connection provides a wide opening for easy access to contents and a positive connection without the use of expensive pinch clamps. Funnels are heavy wall throughout. A coarse porosity disc is sealed in. Cap assembly consists of a PBT cap, PTFE body and 3/8" acetal hose connection with coupling. Always use caution in all pressure applications. Plastic safety coating available, please call.