Overview
Built for the booth.
HIT.7421 Medium Activator is to be used with HIT.7420 primer Series. HIT.7421 activator is compliant with Low VOC 2.1 requirements.
High Teck 7420 Series 2.1 VOC 2K HB Primer Activator is a high-build primer activator designed for professional collision repair applications. This two-component system mixes at a 4:1 ratio and delivers zero VOC emissions, making it compliant with the most stringent environmental regulations while maintaining professional performance standards.
The activator provides excellent adhesion across multiple substrates including bare metal, e-coat, plastic, and existing primer surfaces, reducing the need for multiple primer systems in the shop. Its high-build formulation offers superior coverage and filling properties, helping to minimize surface imperfections and reduce overall repair time. The 2K chemistry ensures durable cross-linking for long-lasting protection and paint adhesion.
Follow proper spray booth ventilation requirements and wear appropriate respiratory protection during application. Always refer to the complete technical data sheet for detailed mixing instructions, flash times, and application parameters before use.
Why Pros Choose High Teck Products HIT
- Medium dry, improves shop productivity
- Compliant with 2.1 VOC requirements.
Application Guide
- Ensure substrate is clean and properly prepared. Compatible with bare metal, e-coat, plastic, and primer surfaces.
- Mix primer and activator at 4:1 ratio by volume. Mix thoroughly until uniform.
- Apply mixed primer to prepared substrate using appropriate spray equipment.
- Allow proper flash time between coats and before topcoat application according to shop temperature and humidity conditions.
Compatibility
Compatible paint systems: 2K.
Specifications
| Part No. | 7421-16 |
|---|---|
| Product Line | HIT |
| Manufacturer | High Teck Products |
| UPC | 813834015269 |
| Rubberized | No |
- Mix Ratio
- 4:1
- VOC Content
- Zero VOC
- Compatible Substrates
- Bare metal, e-coat, plastic, primer
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 primer activator on?
This activator is compatible with bare metal, e-coat, plastic, and primer substrates, making it versatile for most collision repair applications.
What's the proper mix ratio for this activator?
Mix at a 4:1 ratio with the compatible 2K primer. Ensure accurate measurement for proper curing and performance.
Does this activator contain VOCs?
No, this activator has zero VOC content, helping shops meet environmental compliance requirements while maintaining performance.
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
Two hours
Flash
10-15 minutes
Sandable
1 hour @ 70 degrees F
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 7421-16. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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