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Evercoat 603 Liquid Hardener for Fiberglass Resin and Gel Coat 1.5 oz

Manufacturer

Evercoat

<p>Since 1953, Evercoat has been the gold standard in collision repair and marine restoration products. Based in Cincinnati, Ohio, and now part of the Fortune 500 company Illinois Tool Works (ITW), Evercoat has earned its reputation as the #1 mentioned brand in professional body shops across North America. Their commitment to innovation and quality has made them the go-to choice for automotive technicians, marine professionals, and serious DIY enthusiasts who demand professional-grade results.</p><h3>Industry-Leading Body Repair Solutions</h3><p>Evercoat's comprehensive product line addresses every stage of the repair process. Their <a href="/229-evercoat-fillers-200404">fillers</a> are engineered with patented formulations that spread smoothly, cure quickly, and sand effortlessly, reducing labor time while delivering superior featheredge quality. The brand's <a href="/229-evercoat-epoxy-putties-putty-200379">epoxy putties and putty</a> products fill pinholes, grind marks, and minor imperfections with exceptional ease, providing the perfect foundation for primer and paint. For marine applications and fiberglass repairs, Evercoat's <a href="/229-evercoat-gel-coat-gel-coat-repair-kits-200489">gel-coat and gel-coat repair kits</a> deliver durable, UV-resistant finishes that protect against harsh environmental conditions.</p><h3>Complete Repair System Solutions</h3><p>What sets Evercoat apart is their systems approach to collision repair. Their <a href="/229-evercoat-polyester-resin-200790">polyester resin</a> products provide the structural foundation for fiberglass repairs, while their extensive line of <a href="/229-evercoat-resin-additives-rollers-spreaders-etc-200866">resin additives, rollers, spreaders, and accessories</a> ensures technicians have everything needed for professional results. Evercoat doesn't just sell products—they provide comprehensive training and standard operating procedures that help shops improve efficiency and reduce cycle times. With decades of proven performance in both automotive collision centers and marine repair facilities, Evercoat continues to innovate with color-changing fillers, lightweight formulations, and specialty products designed to meet the evolving needs of modern repair professionals.</p>

Part Number

603
07/13/2036 1:31 AM
Sale Price

$9.27

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

Evercoat 603 Liquid Hardener is a methyl ethyl ketone peroxide (MEKP) catalyst designed as a setting agent for use with all polyester resins and gel coats. This clear liquid hardener is essential for initiating the curing process in fiberglass repair and fabrication projects.

Key Features:

  • Compatible with all brands of polyester resin and gel coat products
  • Comes in a convenient plastic squeeze tube with graduated measurements for precise mixing ratios
  • Clear liquid formula for consistent results
  • 1.5 fluid ounce (40-44cc) capacity per tube
  • Made in USA with quality control standards

This hardener must be mixed according to the manufacturer's directions on your specific resin or gel coat product label. Proper mixing ratios are critical for achieving optimal cure times and strength in automotive body repair, marine applications, and general fiberglass fabrication work.

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