GASSEAL is a non-setting pipe sealant used for metallic threaded joints. Suitable for use with natural gas and LPG pipework. Independently tested by BSI to BS EN 751-2: 1997 Part 2 Class B. Joints can be assembled and pressure tested immediately. Non corrosive to aluminium, brass, copper, low carbon steel and zinc. Resists vibration. Compatible with foam forming leak testers. Non-setting pipe sealant.