LOCTITE 638 is designed for the connection of cylindrical fitting parts, especially with narrow connection distances approaching 0.25 mm. The product cures in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. It functions not only on active metals, but also on passive substrates, offering robust curing capabilities. The product offers high temperature quality and good oil resistance and tolerance of minor surface contaminants.
Most important features
Tolerates light soiling, including industrial oils
High strength on all metals, including passive materials (e.g. stainless steel)
High temperature resistance
Recommended for shafts, gears, pulleys and similar cylindrical parts