Overview
Built for the job.
High performance - provides excellent adhesion to bare or primed surfaces Versatile - bonds bare metal, epoxy or urethane two component primed surfaces, weld-through with minimal burn back Excellent appearance - easily duplicates factory appearance, provides flexible seal with no shrinkage, cracking or sagging…
Fusor® 123 is a two-part, fast-curing non-sag seam sealer designed for professional collision repair and auto body applications. This white paste formulation provides reliable sealing of panel joints, seams, and gaps while maintaining its position during application without dripping or running on vertical surfaces.
The adhesive demonstrates excellent substrate compatibility, bonding effectively to aluminum, bare metal, e-coat, plastic, primer, and steel surfaces. With a 24-hour full cure time, this sealer allows for efficient workflow planning in busy shop environments. The 10.1 oz cartridge format provides convenient dispensing and consistent bead application for precise seam sealing work.
Follow proper safety protocols during application, including adequate ventilation and appropriate personal protective equipment as specified in the product's safety data sheet.
Why Pros Choose LORD Fusor Adhesives 2-Part, Fast
- High performance provides excellent adhesion to bare or primed surfaces
- Versatile bonds bare metal, epoxy or urethane two component primed surfaces, weld through with minimal burn back
- Excellent appearance easily duplicates factory appearance provides extremely flexible seal with no shrinkage, cracking or sagging
- Environmentally resistant provides excellent corrosion protection
- Easy to finish can be tooled, wiped clean, sanded and/or painted immediately
How to Use
For truck beds, tooled door skin, floor pan
- Ensure substrates (aluminum, bare metal, e-coat, plastic, primer, or steel) are clean and properly prepared according to manufacturer specifications
- Install cartridge in dual-cartridge dispensing gun and dispense small amount to ensure proper mixing of 2-part components
- Apply sealer in continuous bead to seam areas, maintaining consistent pressure for uniform application
- Tool or shape sealer as needed immediately after application while material remains workable
- Allow 24 hours for full cure before final processing or topcoating
Compatibility
Compatible substrates: Bare Metal, Primed Surface.
Compatible paint systems: Urethane, Epoxy.
Specifications
| Part No. | 123 |
|---|---|
| Product Line | FUS |
| MFR Model | 123 |
| Standard/Approvals | GHS Hazard |
| Application | For truck beds, tooled door skin, floor pan |
| Manufacturer | LORD Fusor Adhesives |
| UPC | 66623390973 |
| Brand | Fusor® |
| Applicable Materials | 2K Primer, Urethane 2K Chemistry |
| Composition | 95 to 100% Aliphatic Polyisocyanate, 0.1 to 0.9% Monomeric Aliphatic Diisocyanate (Part A), 5 to 10% Titanium Dioxide (Part B) |
| Application Time | 3 min at 70 deg F |
| Paintable (Y/N) | Y |
| Sprayable (Y/N) | N |
| Component | 2K |
| Odor/Scent | Mild |
| Color | White |
| Flash Point | 201 deg F |
| Container Size (oz) | 10.1 |
| Container Type | Cartridge |
| Form | Paste |
| Type | 2-Part, Fast |
| Curing Time | 24 hr at 70 deg F |
- Package Size
- 10.1 oz cartridge
- Color
- White
- Form
- Paste
- Type
- 2-part fast non-sag seam sealer
- Cure Time
- 24 hours
- Compatible Substrates
- Aluminum, bare metal, e-coat, plastic, primer, steel
About LORD Fusor Adhesives
LORD Fusor Adhesives 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 seam sealer on?
Fusor 123 is compatible with aluminum, bare metal, e-coat, plastic, primer, and steel substrates, making it suitable for most body shop sealing applications.
How long does this sealer take to fully cure?
The sealer has a 24-hour curing time for complete cure.
What's the advantage of the non-sag formula?
The non-sag paste consistency allows for vertical application without dripping or running, making it ideal for sealing seams in doors, quarter panels, and other vertical surfaces.
Documents & Safety
- Safety Data Sheet (SDS)
- Technical Data Sheet (TDS)
- fusor_517_catalog.pdf
- fusor_123_specification_sheet.pdf
- Fusor_100EZ_Catalog.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
Work Time
5-10 minutes
Cure
10 minutes
Paintable
10 minutes or within 24 hours
Full Cure
24 hours
How to apply
Steps
1Clean both surfaces to bare, dry substrate.
2Load the cartridge and fit the mixing nozzle.
3Apply an even bead (or clamp) where needed.
4Tool or smooth the joint before it skins over.
5Allow to cure fully before stressing or painting.
Specifications
Full data
Frequently asked
Good to know
LORD Fusor Adhesives FUS is compatible with Bare Metal, Primed Surface. 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 LORD Fusor Adhesives FUS is 24 hr at 70 deg F. 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 LORD Fusor Adhesives FUS in a 10.1 container. Check the autofxmart catalog for other sizes and bulk pricing.
Most in-stock orders for LORD Fusor Adhesives FUS 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 LORD Fusor Adhesives 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.
What Our Customers Say
Thanks! Your review was submitted and will appear after moderation.
No reviews yet — be the first to review this product.
