Carlube Multi-Purpose Copper Anti?Seize Grease is a high melting point, lead free copper based assembly compound which forms a dense protective coating that will not wash or burn off. Its anti-seize properties are particularly useful when assembly and dismantling occurs. Carlube Multi-Purpose Copper Anti?Seize Grease is ideal for protecting all metal against seizure, Leakage of oil and water, rust and corrosion, it can also help to prevent disc brake squeal if applied to calliper and BACK of disc pads