This selection contains various 50ml bottles of Loctite brand industrial adhesives and sealants, including threadlockers like Loctite 270 (high strength) and Loctite 222 (low strength).Also visible is Loctite 542, specifically designed as a thread sealant for metal pipe threads.These products are used to prevent loosening, leakage, and corrosion in threaded fasteners and pipe assemblies