Loctite 638 High Strength Retainer
Loctite 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.25mm. 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.
Features:
- 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
- Substrates: Steel
- DVGW Approval (EN 751-1): NG-5146AR0619
- WRAS Approval (BS 6920): 0511518
Specifications:
- Colour: Green
- Adhesive Type: Acrylic
- Chemical Type: Urethane Methacrylate
- Fluorescence: Positive under UV Light
- Viscosity: 2500 mPa.s
- Full Cure Temperature: 25 degree Celsius
- Shear Strength (Steel): 4500 psi
- Specific Gravity: 1.09 g/l
- Specific Gravity Temperature: 25 degree Celsius
- Viscosity Temperature: 25 degree Celsius
- Cure System: Anaerobic
- Secondary Cure System: Activator
- Fixture Time: 4 minutes
- Service Temperature Range: -55 to 180 degree Celsius
- Fixture Time Temperature: 4 degree Celsius
- Gap Fill: 0.25 mm