The Loctite LC267328 Quick Metal 660 is a high-strength retaining compound designed for bonding cylindrical fitting parts, especially where bond gaps can reach up to 0.5 mm. This anaerobic methacrylate-based compound cures in the absence of air between close-fitting metal surfaces, effectively preventing loosening and leakage caused by shock and vibration. It offers robust curing performance, tolerating minor industrial oil contaminations and working effectively on passive substrates. Loctite 660 provides strong adhesion on various metals, including steel, aluminum, and plated surfaces, making it ideal for restoring the correct fit on worn shafts, bearing housings, and keyways without the need for remachining.