Overview
Built for the job.
Excel Autobody Products (X-L) 1K Sealers are an excellent quality, low build primer/sealer that is ready to spray right out of the can. Fast drying and creates a uniform surface without a lot of film build. XL 1K Sealers provide excellent adhesion to fully cured paint surfaces, treated and primed steel, properly…
X-L Products 1K Sealer in red is a single-component sealing solution designed for collision repair and refinishing applications. This ready-to-use sealer provides reliable substrate preparation and protection across multiple automotive surfaces without requiring mixing or catalyst addition.
The sealer demonstrates excellent adhesion to aluminum, e-coat, fiberglass, primer, and steel substrates, making it suitable for diverse repair scenarios in modern collision work. Its 1:1 mix ratio eliminates measuring complexity and reduces waste, while the red tint provides clear visual confirmation of coverage during application.
Apply using standard spray equipment with appropriate PPE including respiratory protection and adequate booth ventilation. Ensure substrate cleanliness and proper surface preparation before application for optimal adhesion performance.
Why Pros Choose X-L Products X-L
- Low Build
- Fast Drying
- Excellent Adhesion
- For use on fully cured paint surfaces, treated and primed steel, prepared aluminum and fiberglass
- Available in Black, Red, White, and Gray
Application Guide
- Prepare substrate surface ensuring aluminum, e-coat, fiberglass, primer, or steel is clean and properly prepped
- Product is ready to use - no mixing required (1:1 ratio)
- Apply sealer evenly to prepared substrate
- Allow proper flash time before subsequent coats or topcoat application
Compatibility
Compatible substrates: Steel, Aluminum, Fiberglass.
Compatible paint systems: Lacquer, Enamel, 1K, Basecoat.
Specifications
| Part No. | 21004 |
|---|---|
| Product Line | X-L |
| Manufacturer | X-L Products |
| UPC | 000050210046 |
| Maximum Sale Quantity | 4 |
| Maximum Sale Day | 7 |
| Rubberized | No |
- Mix Ratio
- 1:1
- Compatible Substrates
- Aluminum, E-coat, Fiberglass, Primer, Steel
About X-L Products
X-L 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 sealer on?
This 1K sealer is compatible with aluminum, e-coat, fiberglass, primer, and steel substrates, making it suitable for most common auto body repair applications.
Does this require mixing?
No, this is a 1K (one-component) sealer with a 1:1 mix ratio, meaning it's ready to use straight from the container without adding activators or catalysts.
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
Flash
5 to 15 minutes
Topcoat
30 minutes to 1 hour
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
X-L Products X-L is compatible with Steel, Aluminum, Fiberglass. 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 X-L Products X-L 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 X-L 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 X-L Products X-L is 21004. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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