Overview
Built for the job.
2-in-1 primers are a specialty coating designed for easy and convenient priming of metal and plastic parts. These primers help prevent rust and seal out moisture, while providing a smooth base for topcoat application on metal substrates. 2-in-1 primers also have excellent flexibility and adhesion properties that…
TRANSTAR® 4623 is a 2-in-1 primer formulated for spray application, ideal for preparing aluminum, e-coat, fiberglass, galvanized steel, OEM parts, plastic, SMC and other substrates before topcoat. The ready-to-spray formula eliminates mixing steps and provides consistent adhesion across diverse materials.
Key performance metrics include a flash time of 5-10 minutes and a sandable window of 15-20 minutes, allowing rapid progression to subsequent coats. Coverage is rated at 432 ft² per gallon at a 1-mil film thickness, supporting efficient material usage on large panels. The product maintains a one-year shelf life when stored properly.
Safety handling requires standard PPE: eye protection, chemical-resistant gloves, protective clothing and a respirator in well-ventilated areas. The formulation is classified with the signal word "Warning" and carries multiple GHS hazards; follow all H-statements and first-aid guidelines as outlined on the SDS.
Why Pros Choose Transtar Autobody Technology TRM
- Fast drying and flexible
- Excellent adhesion on metal or plastic substrates
- Good corrosion resistance
- Sands easily with superior fill and build
How to Use
For use on metal or plastic surfaces
- Clean and degrease the substrate; ensure the surface is free of oil, rust, and loose material.
- The product is ready to spray - no mixing required.
- Apply a uniform first coat using aerosol spray. Allow flash time of 5-10 minutes before handling.
- If additional coverage is needed, apply a second coat after the first coat reaches sandable condition (15-20 minutes). Lightly sand if necessary.
- Allow the final coat to cure; full dry time aligns with the sandable window of 15-20 minutes.
Compatibility
Compatible substrates: Plastic.
Specifications
| Part No. | 4623 |
|---|---|
| Product Line | TRM |
| MFR Model | 4623 |
| Standard/Approvals | California Pro65 Warning: Cancer and Reproductive Harm |
| Application | For use on metal or plastic surfaces |
| Manufacturer | Transtar Autobody Technology |
| UPC | 845505000663 |
| Brand | TRANSTAR® |
| Maximum Sale Quantity | 6 |
| Maximum Sale Day | 7 |
| Color | Red |
| Container Size (oz) | 20 |
| Curing Time | 15 to 20 min Dry |
| Coverage (sq-ft) | 432 |
| Mixing Ratio | RTU |
- Mix Ratio
- Ready to spray
- Sandable Time
- 15-20 min
- Flash Time
- 5-10 min
- Dry Time
- 15-20 min
- Coverage
- 432 ft²/gal @ 1 mil
- Shelf Life
- 1 year
- Compatible Substrates
- Aluminum, e-coat, fiberglass, galvanized, OEM, plastic, primer, SMC, steel
About Transtar Autobody Technology
Transtar Autobody Technology 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 substrates are compatible with TRANSTAR® 4623 2 in 1 Primer?
It can be applied to aluminum, e-coat, fiberglass, galvanized steel, OEM surfaces, plastic, existing primer, SMC and regular steel.
How long does the primer stay sandable after application?
The sandable window is 15-20 minutes.
What are the flash and dry-curing times?
Flash time is 5-10 minutes; full dry cure occurs within 15-20 minutes.
What personal protective equipment is required when spraying this product?
Wear eye protection, chemical-resistant gloves, protective clothing and a respirator approved for organic vapors.
What coverage can I expect from one aerosol can?
The product covers approximately 432 ft² per gallon at a film thickness of 1 mil. A 20-oz (0.156 gal) can therefore provides about 67 ft².
Documents & Safety
Warning - Use this product only with proper protection. Wear safety glasses or goggles, chemical-resistant gloves, suitable protective clothing, and a respirator rated for organic vapors. The aerosol is flammable, can cause serious eye injury, skin burns, and respiratory irritation; it contains carcinogenic and organ-toxic ingredients. Avoid inhalation and skin contact at all times. Always refer to the full SDS before use.
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.
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
Transtar Autobody Technology TRM is compatible with Plastic. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
The curing time for Transtar Autobody Technology TRM is 15 to 20 min Dry. Drying and curing times may vary with temperature, humidity, and film thickness — always consult the Technical Data Sheet (TDS) for exact cycle conditions.
This listing ships Transtar Autobody Technology TRM in a 20 (CN) container. Check the autofxmart catalog for other sizes and bulk pricing.
Transtar Autobody Technology TRM uses a mix ratio of RTU. Always measure activators and reducers accurately to maintain film properties and pot life — deviating from the ratio can cause adhesion or curing problems.
Most in-stock orders for Transtar Autobody Technology TRM 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.
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