R-M DH105 – Low VOC Slow Hardener (Gallon & Quart)

R-M DH105 Low VOC Slow Hardener (Gallon & Quart) is a professional automotive hardener formulated to provide extended working time and controlled curing in collision repair and refinishing applications. Designed for use with compatible R-M clearcoats and topcoats, this slow-speed hardener allows for improved flow, leveling, and finish quality, especially in warmer shop conditions or larger refinishing jobs.

With its low VOC chemistry, DH105 supports environmental compliance while delivering consistent activation, strong film build, and durable performance. Its slower reaction profile makes it an ideal choice for technicians who need added open time to achieve smooth, uniform results without sacrificing long-term protection.

Key Features

• Quart & Gallon Sizes: Flexible sizing for small repairs, full-vehicle refinishing, and high-volume shop use
• Low VOC Slow Hardener Formula: Designed for environmental compliance with extended working time
• Controlled Cure Speed: Ideal for warmer temperatures, large panels, and complex refinishing work
• Reliable Activation: Promotes uniform film development and consistent finish appearance
• Professional Grade: Trusted by collision centers, auto body shops, and refinishing technicians
• System Compatible: Engineered for use with approved R-M refinishing systems