Giganet Loctite 638 (Retaining compound) – Adhesive

Part Number: GN-560069


Giganet Loctita 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 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.

  • 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


Diametrical Clearance (Maximum) : 0.25 mm
Fixture Time : 4 min
Fixture Time Temperature : 39 °F
Full Cure Temperature : 77 °F
Gap Fill : 0.01 in
Shear Strength Unit, Steel : psi
Substrates : Metal: Steel
Temperature Max : 300
Temperature Min : -65
Temperature Unit : °F