Description
Loctite 641 Adhesive – Medium Strength Retaining Compound
Overview:
Loctite 641 is a high-performance retaining adhesive designed for bonding cylindrical fitting parts such as bearings, bushings, and sleeves. It provides medium-strength adhesion, allowing for secure assemblies while permitting disassembly with standard tools when necessary.
Key Features:
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Type: Medium-strength retaining adhesive
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Colour: Yellow
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Fixture Time: 20 minutes
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Gap Fill: 0.15 mm – ideal for tight tolerances and small gaps
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Operating Temperature: -55°C to 150°C (-65°F to 300°F)
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Recommended Substrates: Metals, particularly steel
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Shear Strength (Steel): 12 N/mm² (1700 psi)
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Viscosity: 600 mPa·s (cP) – suitable for precise application
Applications:
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Retaining bearings, bushes, and sleeves in housings
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General metal-to-metal bonding where medium-strength adhesion is required
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Workshop and industrial assemblies requiring reliable yet serviceable bonds
Benefits:
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Reliable medium-strength adhesion
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Reduces loosening due to vibration
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Allows disassembly with standard hand tools
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Resistant to common industrial temperatures
