Loctite SF 7400 Solvent-Based Electronic Marking Ink, 20ml

The Loctite SF 7400 is a dark-red, solvent-based marking ink specifically formulated for electronic equipment. It provides a tamper-evident seal and a clear visual indicator for critical adjustment points and components, signalling when they have been set, calibrated, or tested.

This ink dries rapidly upon application, minimising downtime and preventing smudging. It offers excellent adhesion to a wide variety of substrates commonly found in electronics, ensuring the mark remains durable and legible throughout the product's lifecycle. The formulation is designed to withstand the demanding environments of electronic assemblies, with a service temperature range of -35 to +145°C.

Key Features & Benefits

• Tamper-Evident Marking: Ideal for sealing adjustment screws, potentiometers, and other critical settings to prevent unauthorised or accidental changes.
• Clear Visual Indication: The dark-red colour provides a high-contrast, easily identifiable mark against most electronic component backgrounds.
• Fast Drying: Solvent-based formula ensures quick drying to facilitate efficient production or repair workflows.
• Excellent Adhesion: Bonds reliably to various materials used in electronics, including plastics, metals, and coated surfaces.
• Wide Temperature Tolerance: Performs reliably in environments from -35°C to +145°C, making it suitable for a broad range of applications.

Supplied in a convenient 20ml bottle for precise dispensing and control, the Loctite SF 7400 is an essential tool for quality control, warranty verification, and maintenance in electronic manufacturing, servicing, and repair.