Overview
Built for the job.
NR/SCCATALYST FOR EPOXY PRIMER
The High Teck Products NR/SC Catalyst for Epoxy Primer is a specialized hardener designed for use with 7600 series epoxy primers in professional collision repair applications. This catalyst enables superior adhesion and corrosion protection on aluminum, steel, and previously primed surfaces, making it essential for multi-substrate repair work.
Mixed at a 1:1 ratio with 7600 series primer, this catalyst provides an 8-hour pot life for extended working time on large jobs. The system flashes in 15 minutes under ambient conditions or 30 minutes at 140°F for accelerated processing. With a VOC content of 458.69 g/L, this product meets professional coating requirements while delivering reliable cure performance across approved substrates.
Why Pros Choose High Teck Products HIT
- NR/SCCATALYST FOR EPOXY PRIMER
Application Guide
- Ensure substrate (aluminum, steel, or primed surfaces) is properly cleaned and prepared for coating.
- Mix 1 part 7600 series epoxy primer with 1 part 7603 catalyst thoroughly. Mixed material has an 8-hour pot life.
- Apply epoxy primer system to prepared substrate using appropriate spray equipment.
- Allow 15 minutes flash time before handling or applying additional coats.
- For accelerated curing, flash at 140°F for 30 minutes.
Compatibility
Compatible substrates: Epoxy Primer.
Compatible paint systems: Epoxy.
Specifications
| Part No. | 7603-4 |
|---|---|
| Product Line | HIT |
| Manufacturer | High Teck Products |
| UPC | 813834016990 |
| Rubberized | No |
- Mix Ratio
- 1:1 (7600 series : 7603 catalyst)
- Flash Time
- 15 minutes / 30 minutes at 140°F
- Pot Life
- 8 hours
- VOC Content
- 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 catalyst on?
This catalyst is compatible with aluminum, primer, and steel substrates when mixed with 7600 series epoxy primer.
What's the correct mix ratio for this catalyst?
Mix 1 part 7600 series epoxy primer with 1 part 7603 catalyst for proper activation.
How long is the pot life after mixing?
The mixed epoxy primer has an 8-hour pot life, giving you ample working time for application.
What are the flash times for this product?
Flash time is 15 minutes at room temperature, or 30 minutes when force-dried at 140°F.
What's the VOC content of this catalyst?
The VOC content is 458.69 g/L (3.83 lb/gal), which you'll need to factor into your shop's compliance calculations.
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
High Teck Products HIT is compatible with Epoxy Primer. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
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 7603-4. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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