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® 4633 2‑in‑1 Primer is a ready‑to‑spray aerosol primer designed for rapid prep and base coating of repair panels. It provides a single‑step primer/undercoat that bonds to a wide range of substrates, making it ideal for body shop applications where speed and consistency are critical.
Key performance data include a flash time of 5‑10 minutes and a sandable window of 15‑20 minutes, allowing fast turnaround before sanding or topcoat application. The formulation offers 432 ft² per gallon at a 1 mil film thickness, delivering economical coverage on aluminum, e‑coat, fiberglass, galvanized steel, OEM panels, plastics, SMC, and standard steel. Shelf life is 1 year when stored properly.
Safety handling requires standard PPE: eye protection, chemical‑resistant gloves, protective clothing, and a respirator in confined spaces. Use in well‑ventilated areas and follow all H‑statements (H222, H280, H315, H317, H319, H336, H340, H350) for acute toxicity, flammability, and respiratory hazards.
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
- Thoroughly clean the substrate and remove all rust, oil, grease, and loose material; ensure a sound, dry surface.
- Shake the 20 oz aerosol can for at least 30 seconds to ensure uniform suspension; the product is ready to spray (no mix ratio required).
- Apply the first coat using a steady spray pattern, maintaining the recommended spray distance; allow a flash time of 5‑10 minutes.
- After the flash time, re‑spray if additional coverage is needed. The primer remains sandable for 15‑20 minutes; if sanding is required, do so within this window.
- Allow the final coat to dry completely before applying topcoat or performing any further work; full dry cure is achieved within the 15‑20 minute sandable period.
Compatibility
Compatible substrates: Plastic.
Specifications
| Part No. | 4633 |
|---|---|
| Product Line | TRM |
| MFR Model | 4633 |
| Standard/Approvals | California Pro65 Warning: Cancer and Reproductive Harm |
| Application | For use on metal or plastic surfaces |
| Manufacturer | Transtar Autobody Technology |
| UPC | 845505000670 |
| Brand | TRANSTAR® |
| Maximum Sale Quantity | 12 |
| Maximum Sale Day | 7 |
| Color | White |
| 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
- 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 can TRANSTAR® 4633 2 in 1 Primer be applied to?
It is compatible with aluminum, e‑coat, fiberglass, galvanized metal, OEM surfaces, plastic, existing primer, SMC, and steel.
How long does it take for the primer to become sandable?
The sandable window opens in 15–20 minutes after application.
What is the flash time before the surface can be recoated?
Flash time is 5–10 minutes.
What personal protective equipment is required when spraying this product?
Wear eye protection, chemical‑resistant gloves, protective clothing, and a respirator suitable for organic vapors and aerosols.
What coverage can I expect from a 20 oz aerosol can?
The product covers approximately 432 ft² per gallon at a 1 mil film thickness, which translates to about 36 ft² per 20 oz can.
Documents & Safety
Warning: This aerosol primer contains toxic solvents and is classified as a carcinogen, flammable oxidizer, and organ‑toxic substance. Use eye protection, chemical‑resistant gloves, protective clothing, and a suitable respirator. Avoid inhalation – vapors can cause respiratory irritation and may be harmful if swallowed. Skin and eye contact can cause severe irritation or corrosion. The product also poses reproductive and long‑term health risks. 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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