• Designed for the aerospace, medical, electronics, and other critical industries.
• Water based, flexible, non-conductive, non-toxic, non-staining, and water/solvent resistant. Extremely bright fluorescent and other colors that dry very hard.
• Easy to identify a mark that is broken, tampered with, or comes loose.
• Provides a convenient visual method for identification of vibratory loosening or tampering on nuts, bolts, fasteners, assemblies and other parts.
• Easily detect when torque has changed.
• Provides warranty protection against tampering.
• Withstand water and most household cleaning agents.
• Highly visible under ambient light and will fluorescent brighter under UV light.
• Excellent adhesion to glass, metal, textiles, plastics, and most other clean substrates. AILABLE -- ----
• RoHS and REACH compliant.
• Available in Metron Marker Pens, Pneumatic Syringes, Pints, and Gallons.

Permanent ink has become a standard for marking errors on printed circuit boards in electronic companies worldwide.

Permanent ink is a water based, flexible, non-conductive, and water-resistant ink that may be applied from our Metron Marker pen to almost any surface, including Teflon, and even where an oily film is present. Adhesion will, of course, vary with the surface to which it is applied. Waterproof, non-toxic, and flexible, with some solvent resistance, Permanent ink is used in electronics, medical, aerospace, communications, museums, horticulture, and various other industries.

Permanent ink is also used as a Torque Seal, vibration proofing, or for tamper proofing.

Permanent ink is available in Red (P1), Green (P2), Orange (P3), Blue (P4),Yellow (P5), Brown (P6), Violet (P7), Grey (P8), Black (P9), White (P10), Gold (P11), Silver (P12)and Transparent (P13), and HOT PINK (P14). Our Transparent Ink (Metron Marker Transflour) fluoresces blue under Ultraviolet light and comes standard in Micro-tip. Available in Standard-tip and Micro-tip (Gold and Silver not available in Micro-tip).