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FH612-18 Medium Universal Hardener, 1/2 pt Aerosol Can, Liqu - Martin Senour Paints

Part #: FH612-18

The Martin Senour Paints FH612-18 Medium Universal Hardener is a professional-grade component designed to optimize the performance of Finish 1™ automotive and industrial refinish products. This 1/2 pint aerosol can of liquid hardener is engineered for technicians and mechanics seeking reliable activation within the Finish 1™ system, ensuring proper cure and durability for various coating applications.

Key Features

  • Universal Compatibility: Formulated for broad use across Finish 1™ products, including 3.5 VOC Finish 1 Factory Packaged Single Stage Colors, sealers, and clearcoats.
  • Optimized Temperature Range: Engineered for consistent performance in environments with temperatures between 65°F and 85°F, allowing for predictable curing.
  • VOC Compliant: Specifically designed for use with 3.5 VOC Finish 1 Factory Packaged Single Stage Colors, adhering to relevant environmental standards.
  • Convenient Aerosol Format: The 1/2 pint aerosol can provides a practical and efficient method for dispensing, contributing to easy application.
  • Integrated System Component: Part of the compact and user-friendly Finish 1™ product line, known for a simple 4:1 mix ratio.

Applications

The FH612-18 Medium Universal Hardener is an essential activator for professional automotive refinishing, including collision repair and custom paint projects. It is suitable for a range of industrial coating applications where Finish 1™ primers, sealers, single-stage colors, and clearcoats are utilized. This hardener ensures proper chemical cross-linking, vital for achieving the required film hardness, gloss retention, and overall longevity of the final coating.

We have 459 in stock
List: $33.82 Save: $12.99

$20.83

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
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This product was added to our catalog on Friday 12 June, 2026.

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