Metron Marker Torque Seal
The Professional Solution for Torque Stripes, Tamper Seals, and Vibration Aids
Industry-Trusted Solution
At Metron, we make things that work better and last longer—products that solve real problems with clean design and honest materials. The Metron Marker® Permanent Ink formula has been trusted for decades in aerospace, medical, and electronics as a torque seal and torque-striping solution. A standard in data centers, it provides precise, mess-free application with highly visible fluorescent colors for fast visual checks.
Ready to try it?
Application Guide
To use as a Tamper Seal:
- Identify the access point (such as bolt top)
- Apply ink to cover the access area
- Allow to dry completely
- Any disruption to the seal indicates tampering
To use as a Torque Stripe:
- Ambient temperature (faster with warm air)Ensure the part is properly secured
- Clean the application area if needed for best adhesion
- Apply ink across adjoining parts to create a continuous stripe
- Allow to dry at ambient temperature (warm air can speed up drying)
- During inspection, a broken stripe indicates loosening or tampering
Technical Specifications
Drying Time
Drying depends on atmospheric conditions and mark size—a small mark in warm, dry air cures faster than a larger mark in a moist environment.
Application Temperature
-20°F to 500°F
Colors Available
Multiple standard and fluorescent options, including invisible inks that fluoresce under UV light.
Industries
Widely used in aerospace, medical, electronics, data centers, and other precision-driven fields.
Appearance
Cream-like liquid (various colors)
Flash Point
Non-combustible
Resistance
Most colors resist up to 200 °C without discoloration. At higher temperatures, colors may fade, but the mark remains visible.
Shelf Life
3-12 months *may be extended by adding water before hard-set*
Compatibility
Safe on most metals, glass, plastics & textiles – non-staining, non-flammable
Environmental Safety
VOC <50 g/L
