Amercoat 370 Fast Cure Epoxy Primer

PPG Amercoat 370 Fast Cure High Build Epoxy Primer – High-Performance Corrosion Protection

FULL KIT includes 1-gallon of sprayable primer including the activator.

"Hey this is Russ, owner of Boat Crafters Company.  I wanted to make a personal note on this product because I love it as my primary epoxy primer that I use for almost every refinish project. Buying materials can get confusing and expensive REAL QUICK so its nice to have one product that you can reach for in almost any situation.  The best part about this primer is its ultra fast curing time.  When you operate a shop like I do, turning over jobs quickly is imperative to making profit.  This primer (depending on temperature) can be top coated with polyurethane paints after only 45 minutes of cure time!!  This is a game changer for getting jobs done quickly.  During recent testing I was able to sand this primer in under four hours as well.  IF you have more questions about this product please contact me." 

Product Overview:
PPG Amercoat 370 Epoxy Primer is a premium, two-component, high-solids epoxy primer designed to deliver outstanding corrosion resistance and long-term durability in aggressive industrial and marine environments. Engineered for superior adhesion and protective performance, Amercoat 370 is ideal for use on steel and aluminum substrates and serves as a reliable base coat for a wide variety of topcoats.

Key Features:

• ✅ High-Solids, Low VOC Formula – Compliant with environmental regulations while providing excellent coverage and protection.

• ✅ Superior Corrosion Resistance – Developed to withstand harsh marine, coastal, and industrial environments.

• ✅ Excellent Adhesion – Bonds tightly to properly prepared surfaces, including steel, aluminum, and galvanized metal.

• ✅ Fast Drying & Recoat Flexibility – Reduces downtime and allows for efficient project scheduling.

• ✅ Versatile Compatibility – Can be topcoated with a wide range of epoxy and polyurethane systems.

Technical Specifications:

• Type: Two-component epoxy

• Color: White only

• Finish: Flat

• Mix Ratio: 4:1 (Base to Hardener)

• Volume Solids: Approx. 70%

• Theoretical Coverage: ~112 sq ft/gal at 10 mils DFT

• Dry Time (at 77°F / 25°C):

  • Touch: 2 hours

  • Recoat: 4–24 hours

  • Full Cure: 7 days

• VOC Content: <250 g/L (varies by region and formulation)

Recommended Uses:

• Structural steel in offshore platforms

• Industrial plants and refineries

• Fiberglass Marine vessels and shipyards

• Bridges and infrastructure

• Tank exteriors and pipelines

Application Methods:

• Airless spray 

• Conventional spray (1.8-2.5mm tip suggested)

• Brush or roller (for touch-up)

Available Sizes:

• 1-gallon kit (includes base and hardener)
  

Storage & Shelf Life:
Store in a cool, dry place between 40°F and 100°F. Shelf life is 24 months from date of manufacture when properly stored in unopened containers.

Why Choose PPG Amercoat 370?

Trusted by professionals worldwide, PPG Amercoat 370 combines robust protection, ease of application, and long-lasting durability, making it the go-to primer for critical infrastructure and demanding industrial environments.

Need help choosing the right primer? CONTACT HERE