LOCTITE® 542 is designed for securing and sealing metal pipes and fittings and other cylindrical metal assemblies. The product cures in the absence of air and confined between close fitting metal surfaces and prevents loosening and leakage due to shock and vibration. LOCTITE 542 is thixotropic so little liquid product flows after application to the part. Recommended for fine threads used in hydraulic, pneumatic and general fittings Instant sealing with low pressure Suitable for metal threads only Resistant to fuel, oil, coolants and hydraulic fluids Secures the connection against loosening due to vibration DVGW approval (EN 751-1): NG-5146AR0855