PPG DU6/04 Urethane Hardener 1 Quart Slow Cure Automotive Refinish

The PPG DU6/04 Urethane Hardener is a professional-grade, slow-cure isocyanate hardener sold in a convenient 1-quart size. Designed for use in warm- to hot-temperature spray environments, the DU6 is the preferred hardener when shop or ambient temperatures exceed 70°F (21°C), allowing the applied coating adequate open time for proper flow and leveling before cure.

Part of PPG's trusted Deltron refinish system, the DU6 hardener is compatible with PPG's Concept DCC acrylic urethane, Durethane polyurethane clears, and select Delfleet Evolution fleet coatings — making it a versatile choice for collision shops, custom paint shops, fleet maintenance operations, and motorcycle builders.

Key Features:

• Slow-cure urethane hardener formulated for warm to high ambient temperatures (70–85°F / 21–29°C and above)
• Provides extended open time for improved flow, leveling, and color match
• Compatible with PPG Concept DCC, Durethane clears, and Delfleet Evolution topcoat systems
• Sold as a 1-quart (DU6/04) unit for professional shop use
• Must be mixed with compatible PPG paint and reducer per product information bulletin ratios
• Works with DT-series temperature-specific reducers for optimized application results

Always consult the applicable PPG Product Information Bulletin for correct mix ratios, reducer selection, and safety handling requirements. As with all isocyanate-containing products, proper respiratory protection and ventilation are required during application.