This is a 250ml tube of Loxeal engineering adhesive also known as thread sealant. This sealant is used to replace traditional PTFE tape, it is great for sealing threaded connections within a system. This is Loxeal's yellow medium strength adhesive and is WRAS approved for use in contact with drinking water. These thread sealants are also compatible was gas, gasoline, gear box oil, hydraulic oil, motor oil and oxygen. This sealant has a maximum temperature tolerance of 150°C and is shock and vibration resistant.