Low Adhesion SpeedMask® Maskant
UV/Visible light-curable SpeedMask® 740-BT maskant provides surface protection during paint, low pressure grit blasting, shot peening, and general handling applications. The material supports the manufacturing of aerospace engine and structural components, as well as orthopaedic joint replacement implants.
SpeedMask® 740-BT maskant is bright blue in color, making it highly visible to automated optical inspection systems. The product cures quickly and is easily removed by peeling, leaving a residue-free surface on non-porous surfaces. When cured, it provides protection for titanium, stainless steel, nickel alloys, aluminum, glass, ABS, and PC surfaces. In addition, the maskant is resistant to MEK-based paint processes.
SpeedMask resins contain no nonreactive solvents and cure upon exposure to light. Their ability to cure in seconds enables faster processing, greater output, and lower processing costs. When cured with Dymax UV light curing spot lamps, focused beam lamps, flood lamps, or conveyor systems they deliver optimum speed and performance for maximum efficiency. Dymax lamps offer the optimum balance of UV and visible light for the fastest, deepest cures. SpeedMask® 740-BT maskant is in full compliance with the RoHS2 Directives 2015/863/EU.
Viscosity (nominal): 45,000 cP
Shore Hardness: A65
Modulus of Elasticity MPa [psi]: 2.42 
Cure Time*: 35 seconds
*Cure time based upon Dymax 5000-EC Light Curing Flood Lamp System (250 mW/cm2)
- Paint Processes with heat curing
- Low pressure mechanical blasting applications (sand, grit, or shot peening)
- General material handling
- Fast “on-demand” cure
- Easy peel removal
- High visibility blue appearance
- Visible to automated optical inspection systems
- Resistant to MEK-based paint processes
- Flexible after exposure to heat (i.e., 1-hour @ 200 C)