Overview
Built for the job.
High Teck 7500 Series Epoxy Primers are high build Epoxy Primers with multiple VOC capabilities, depending on the catalyst and reducer used. Formulated for excellent adhesion and corrosion resistance when used on various types of substrates including prop
High Teck 7503-4 is a catalyst specifically formulated for use with epoxy primer systems, designed to provide reliable curing performance across multiple substrate types. This catalyst delivers consistent results when mixed at a 1:1 ratio with compatible epoxy base materials, making it suitable for application on aluminum, steel, and previously primed surfaces.
The catalyst enables fast dry times of 30 minutes at 140°F, allowing for efficient workflow in heated spray booth environments. With zero VOC content, this product helps shops maintain compliance with environmental regulations while providing the chemical reactivity needed for proper epoxy primer curing. The formulation ensures reliable adhesion and corrosion resistance across compatible metal substrates commonly found in collision repair work.
Why Pros Choose High Teck Products HIT
- High build epoxy primer surface
- Multiple VOC capabilities, depending on the catalyst and reducer used.
- Excellent adhesion and corrosion resistance
- Used on various types of substrates including properly prepared steel and aluminum.
- Available in Dark Gray, Black & White
- Mix ratio 1:1
Application Guide
- Ensure substrate (aluminum, steel, or primer) is clean and properly prepared for coating application.
- Mix one (1) part High Teck 7503-4 Catalyst with one (1) part epoxy primer base using a 1:1 ratio.
- Apply mixed epoxy primer to prepared substrate using appropriate spray equipment.
- Allow 30 minutes dry time at 140°F before proceeding with additional coats or topcoat application.
Compatibility
Compatible substrates: Steel, Aluminum, Epoxy Primer.
Compatible paint systems: Epoxy.
Specifications
| Part No. | 7503-4 |
|---|---|
| Product Line | HIT |
| Manufacturer | High Teck Products |
| UPC | 813834015207 |
| Rubberized | No |
- Mix Ratio
- 1:1 (epoxy base to catalyst)
- Dry Time
- 30 minutes at 140°F
- VOC Content
- Zero VOC
- 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 system on?
This epoxy primer catalyst is compatible with aluminum, existing primer, and steel substrates, making it suitable for most common auto body repair applications.
What's the mixing ratio for this catalyst?
Mix one part epoxy base to one part catalyst for proper curing and performance.
How long does it take to dry?
The catalyzed epoxy primer dries in 30 minutes when baked at 140°F.
Does this catalyst contribute to VOC emissions?
No, this catalyst has zero VOC content, helping keep your shop compliant with air quality regulations.
Documents & Safety
- Safety Data Sheet (SDS)
- Technical Data Sheet (TDS)
- sds-7503-7503-catalyst-for-epoxy-primer-usa.pdf
- hit_7500_series_tds_060623.PDF
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
Topcoat
60 minutes
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 Steel, Aluminum, 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 7503-4. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
What Our Customers Say
Thanks! Your review was submitted and will appear after moderation.
No reviews yet — be the first to review this product.
