Markal 81021 Hot Surface Paint Stick Marker Yellow

Product Description

The MARKAL 81021 is a solid paint stick marker engineered for marking hot metal and industrial surfaces at temperatures ranging from 2250 to 11000 degrees F (1070 to 5930 degrees C). The solid paint formula transfers a clear yellow mark directly onto heated workpieces, allowing identification, traceability, and quality control during high-temperature processing. Weighing just 0.035 pounds and measuring 4.63 inches in height with a 0.5-inch square profile, this compact stick is sized for easy handling in foundry, mill, and fabrication environments. It is used by metallurgical technicians, quality inspectors, and plant maintenance personnel working with heated metals and glass.

This paint stick is suited for high-temperature industrial applications where conventional markers fail. It is designed for direct application on coils, billets, bars, castings, pigs, ingots, plates, rails, beams, and glass surfaces while those materials are at elevated temperatures. The yellow color provides strong visual contrast on dark metal surfaces, making it practical for heat-treatment lines, rolling mills, foundries, and glass processing operations where surface marking must survive extreme thermal conditions.

Key Features

• Temperature range of 2250 to 11000 degrees F allows marking across a broad spectrum of high-heat industrial processes
• Yellow color family provides high-contrast visibility on dark metal and glass surfaces
• Solid paint stick format requires no caps, tips, or pressurized components — no failure points
• Compact 4.63-inch length and 0.5-inch square profile fits gloved hands and tight workstation spaces
• Compatible with a wide range of ferrous and non-ferrous substrates as well as glass
• Lightweight at 0.035 pounds for extended use without fatigue

Compatibility

Designed for use on coils, billets, bars, castings, pigs, ingots, plates, rails, beams, and glass surfaces in industrial high-temperature processing environments.

Installation Notes

This product is applied by hand directly to hot surfaces and does not require installation tools or mechanical fastening. Personnel should wear appropriate PPE — including heat-resistant gloves and face protection — when marking surfaces at elevated temperatures. Follow your facility's hot-work safety procedures and applicable OSHA general industry standards before approaching heated workpieces. Do not apply to surfaces exceeding the rated temperature ceiling of 11000 degrees F.