Product Specification:

• High temperature resistance tolerates minor contaminants, including industrial oils.

• High strength on all metals, including passive substrates (e.g., stainless steel).

• Ideal for shafts, gears, pulleys, and similar cylindrical parts.

• LOCTITE 638 is a high strength, fast curing, general purpose retaining compound.

• LOCTITE 638 is designed for the bonding of cylindrical fitting parts, particularly with narrow bond gaps approaching 0.25 mm.

• The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration.

• It not only works on active metals but also on passive substrates, exhibiting robust cure performance.

• The product offers high-temperature performance and good oil tolerance and tolerates minor surface contaminants.