The Loctite LC142613 (Loctite 573) is a high-performance, medium-strength anaerobic flange sealant designed for close-fitting rigid metal flanges. This green, one-part methacrylate-based sealant cures in the absence of air when confined between close-fitting metal surfaces, forming a flexible, solvent-resistant seal that prevents tearing or degradation. It is ideal for sealing rigid iron and steel flanged mating surfaces, offering a maximum gap fill of 0.25 mm and an operating temperature range of -55°C to +150°C. With a fixture time of 10 minutes and a full cure in 72 hours, Loctite 573 provides reliable and durable sealing for industrial applications.