The Loctite LC18966 (also known as Loctite 518) is a high-performance anaerobic gasket sealant designed for sealing rigid metal flanges, particularly on iron, steel, and aluminum surfaces. This medium-strength, flexible gasketing product fills gaps up to 0.25 mm and provides an instant low-pressure seal. It cures when confined in the absence of air between close-fitting metal surfaces, forming a flexible, solvent-resistant seal that will not tear or creep. Ideal for applications requiring excellent oil resistance and tolerance to minor surface contamination. The 50ml tube ensures precise application for various industrial and machinery maintenance tasks.