Overview
Built for the job.
NR/SC DARK GRAY HIGH BUILD EPOXY PRIME
The NR/SC Dark Gray High Build Epoxy Primer is a two-component primer designed for professional collision repair applications. This high-build formulation provides excellent coverage and leveling properties for substrate preparation on aluminum, primed surfaces, and steel. The dark gray color offers superior hiding power and serves as an ideal base for subsequent topcoat systems.
Mixed at a convenient 1:1 ratio with 7603 activator, this epoxy primer delivers an 8-hour pot life for extended working time on larger projects. Flash time is 15 minutes under ambient conditions, with accelerated curing at 30 minutes when baked at 140°F. The primer's compatibility across multiple substrates makes it versatile for mixed-panel repairs and full-vehicle refinishing work.
This product contains 458.69 g/L VOC content and requires proper ventilation and appropriate respiratory protection during application. Always follow established spray booth safety protocols and wear suitable personal protective equipment when handling and applying this epoxy primer system.
Why Pros Choose High Teck Products HIT
- NR/SC DARK GRAY HIGH BUILD EPOXY PRIME
Application Guide
- Ensure substrate (aluminum, steel, or existing primer) is clean and properly prepared for coating application.
- Mix 1 part 7600 series with 1 part 7603 catalyst thoroughly. Mixed material has 8-hour pot life.
- Apply primer in even coats to achieve desired build thickness.
- Allow 15 minutes flash time between coats at room temperature, or 30 minutes at 140°F for accelerated flash.
- Sand and prepare surface as needed before applying topcoat system.
Compatibility
Compatible paint systems: Epoxy.
Specifications
| Part No. | 7600-4 |
|---|---|
| Product Line | HIT |
| Manufacturer | High Teck Products |
| UPC | 813834016938 |
| Rubberized | No |
- Mix Ratio
- 1 part 7600 series with 1 part 7603
- Flash Time
- 15 minutes
- Flash Time (140°F)
- 30 minutes
- Pot Life
- 8 hours
- VOC
- 458.69 g/L (3.83 lb/gal)
- Compatible Substrates
- Aluminum, primer, steel
About High Teck Products
High Teck Products is a trusted manufacturer of professional auto body and refinish products used by collision repair shops and restoration specialists across North America.
Frequently Asked Questions
What surfaces can I use this epoxy primer on?
This high build epoxy primer is compatible with aluminum, steel, and existing primer surfaces, making it suitable for most common automotive substrates in body shop applications.
What's the mix ratio for this primer?
Mix 1 part 7600 series primer with 1 part 7603 catalyst for proper activation and performance.
How long do I need to wait before sanding or topcoating?
Allow 15 minutes flash time at room temperature before sanding or applying topcoats. For bake cycles, flash for 30 minutes at 140°F.
What's the pot life once mixed?
Once catalyzed, this epoxy primer has an 8-hour pot life, giving you plenty of working time for larger jobs.
Documents & Safety
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
Cure & dry schedule
Timing at 77°F
Pot Life
8 hours
Flash
30 minutes
To topcoat
60 minutes
To sand
Overnight
Flash before force-dry
15 minutes
Force-dry
30 minutes at 140° F
How to apply
Steps
1Clean and degrease the surface, then scuff as needed.
2Mask off surrounding panels and trim.
3Mix to the product's ratio and strain.
4Apply 2–3 even coats, flashing between each.
5Let cure fully before sanding, buffing, or assembly.
Specifications
Full data
Frequently asked
Good to know
Most in-stock orders for High Teck Products HIT ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of High Teck Products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for High Teck Products HIT is 7600-4. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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