Loctite 542 Hydraulic thread seal for fine thread 50ml Loctite 542 Hydraulic thread seal for fine thread 50ml Thread Sealant - medium strength. For fine threads in hydraulic, pneumatic and general fittings. Fast curing. LOCTITE 542 is designed for the locking and sealing of metal pipes and fittings as well as other cylindrical metal assemblies. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. The thixotropic nature of LOCTITE 542 reduces the migration of liquid product after application to the part. Your benefits Ideal for fine threads as used in hydraulic, pneumatic & general fittings Suitable for metal threads only Instant low-pressure seal Resistant to fuel, oil, coolants and hydraulic fluids Locks connection against vibration loosening DVGW approval (EN 751-1): NG-5146AR0855