Loctite 603 is a high-strength, low-viscosity anaerobic retaining compound formulated for bonding cylindrical fitting parts. It offers excellent performance on surfaces with light oil contamination, making it ideal for industrial applications where cleaning may be difficult.
Loctite 603 is a green, single-component anaerobic adhesive designed for retaining bearings, bushings, and shafts in housings and on shafts. It cures between close-fitting metal parts in the absence of air, forming a strong bond that resists vibration and corrosion. This product is particularly effective on inactive substrates and in assemblies where consistent cleanliness cannot be guaranteed. It is a go-to choice in maintenance and OEM operations that require maximum reliability.
Colour: Green
Viscosity: 125 to 275 mPa·s
Fixture time on steel: Approximately 10 minutes
Full cure time: 24 hours
Service temperature range: -55°C to +150°C
Specific gravity: 1.10
Fluorescence: Yes (for UV inspection)
Recommended substrates: Steel, stainless steel, brass, aluminium
Primary Chemistry: Methacrylate ester
High-strength formulation ensures permanent retention
Low viscosity provides excellent gap filling in close-fitting parts
Cures without activators, even through light oil films
Outstanding resistance to heat, vibration, and chemicals
UV fluorescent for easy inspection
Eliminates the risk of fretting, vibration loosening, and misalignment
Allows bonding without extensive surface cleaning
Replaces mechanical locking systems in cylindrical assemblies
Increases the life of components exposed to stress and rotation
Used for bonding cylindrical parts such as bearings, bushings, and shafts
Effective on slightly oily or unclean surfaces
Recommended for rotating parts in electric motors, gearboxes, and pumps
Ideal for precision assemblies requiring permanent retention
Suitable for use in automotive, industrial, and aerospace components
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