Flexibility and reliable sealing define Loctite 5205, Flexible Sealant, Medium Strength, 50 ml, designed for close-fitting flanges and machined surfaces. Its anaerobic formulation cures between metal surfaces to form a flexible, vibration-resistant seal that prevents leakage of oils, coolants, and industrial fluids. The medium-strength bond allows easy disassembly when maintenance is required, while its flexibility accommodates slight movement and thermal expansion. Resistant to oil, moisture, and pressure variations, it ensures long-lasting sealing performance in harsh environments. Ideal for marine engines, industrial assemblies, and metric fabrication, Loctite 5205 provides dependable, reusable flange sealing and professional reliability.