Evercoat 733 Standard 4:1 Polyester Primer Catalyst

The Evercoat 733 standard polyester primer catalyst is an epoxy-enriched hardener designed for use with Evercoat 4:1 polyester primer surfacers, including Super Build 730, Super Build 740, and Feather Fill products. It initiates the curing process and helps reduce shrinkage while improving adhesion and long-term stability. The catalyst mixes easily at a 4 parts primer to 1 part catalyst ratio, providing consistent activation and predictable curing in typical shop temperatures around 72F. Compatible with waterborne paint systems and all Evercoat 4:1 polyester primers, the 733 catalyst supports a wide range of automotive refinishing applications. It is VOC compliant and includes GHS and OSHA hazard warnings for safe handling. Packaged in a one-quart container, it is a critical component for achieving proper primer performance.