PPG Omni MH167 Fast Topcoat Hardener - Cool Temperature Urethane Catalyst

The PPG Omni MH167 Fast Topcoat Hardener is a professional-grade urethane catalyst engineered for use with PPG's Omni line of automotive clearcoats and topcoats. Formulated specifically for cooler spray environments, this hardener delivers proper cure speeds and film integrity when ambient temperatures are below 65°F (18°C), making it an ideal choice for unheated shops or colder seasonal conditions.

Key Features:

• Temperature Range: Optimized for use at 55–65°F (13–18°C)
• Mixing Ratio: 2:1 with compatible Omni clearcoats (e.g., MC161 High Solids Urethane Clear, MC260 Quick Clear)
• Pot Life: Approximately 3 hours at 70°F (21°C)
• Fast cure speed reduces dust contamination risk in non-climate-controlled environments
• Compatible with Omni clearcoats applied over acrylic urethane basecoats, acrylic basecoats, and acrylic enamels with hardener
• Designed for exclusive use within the PPG Omni product system
• For professional use in automotive collision and refinish applications

When selecting a topcoat hardener speed, choose MH167 for fast conditions (cooler temps), MH168 for standard conditions (75–85°F), or MH169 for high-temperature environments above 85°F. Always refer to the applicable PPG product bulletin for full application, mixing, and safety instructions.