Methacrylate ester acrylic liquid thread sealant designed for the locking and sealing of metal pipes and fittings. LOCTITE® 569 is a brown methacrylate ester acrylic liquid thread sealant designed for the locking and sealing of metal pipes and fittings. The product cures to prevent loosening and leakage from shock and vibration. Approved by the Australian Gas Association Certificate number 3375 Class III rated working pressure 2000 KPa, working temperature -14 °F to +302 °F(-10 °C to +150 °C).