LOCTITE 638 High‑Strength Adhesive for Cylindrical Joints, 50 ml

This high-performance anaerobic adhesive offers a reliable solution for demanding industrial applications where durability and precision are essential. Designed for general-purpose use, it ensures strong, permanent bonds that are difficult to disassemble, making it ideal for securing shafts, gear transmissions, fitted wheels, and co-axial components. With a rapid curing process—achieving fixture strength on steel in just about 4 minutes—it effectively prevents loosening of joints and leakage caused by vibrations or impact loads. Its advanced formulation works seamlessly not only on active metals but also on passive surfaces such as stainless steel, while maintaining excellent tolerance to light oil residues and minor surface contamination. The adhesive delivers outstanding shear strength exceeding 25 N/mm², with initial strength reached within 5–30 minutes and full curing achieved in 6–72 hours depending on the substrate. Resistant to extreme conditions, it performs reliably across a wide temperature range from -55°C to +180°C. The product’s distinctive green color ensures easy application control, and compliance with the German DVGW standard (EN 751-1: NG-5146AR0619) guarantees proven quality and safety. Conveniently packaged in a 50 ml pen, it provides precise dosing and ease of use, making it a trusted choice for professionals seeking efficiency, strength, and long-lasting performance.