EVERBUILD FLUE JOINTING COMPOUND NON SETTING 1 KG is a ready-mixed paste/putty for sealing metal flue joints in domestic or industrial applications where the flue temperature does not exceed 200 degrees C. This compound does not harden completely and remains flexible to accommodate movement. It is temperature resistant up to 200 degrees C, suitable for internal or external use, and is non-flammable. This product is ideal for jointing metal flue joints.