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® 123EZ is a two-part medium viscosity, non-sag seam sealer designed for professional automotive body repair applications. This blue-colored liquid sealer provides reliable adhesion and sealing for panel joints, seams, and gaps in collision repair work. The 10.1 oz cartridge format delivers consistent mixing ratios and precise application control for efficient workflow.
The sealer offers excellent substrate compatibility, bonding effectively to aluminum, bare metal, plastic, primer, and steel surfaces commonly found in vehicle construction. With a 24-hour full cure time, this medium-bodied formula maintains its position without sagging on vertical surfaces while providing adequate working time for proper application. The non-sag properties ensure consistent thickness and professional finish quality across various joint configurations.
Why Pros Choose LORD Fusor Adhesives 2-Part, Medium
- Versatile bonds to epoxy or urethane 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
How to Use
For truck beds, tooled door skin, floor pan
- Prepare substrate surfaces by cleaning aluminum, bare metal, plastic, primer, or steel to remove contaminants and ensure proper adhesion
- Load cartridge into dispensing gun and mix the 2-part components thoroughly according to manufacturer's ratio specifications
- Apply seam sealer in continuous bead to joints and seams, working within the product's pot life
- Tool or smooth the applied sealer as needed while material remains workable
- Allow 24 hours for complete curing before final finishing operations
Compatibility
Compatible substrates: Bare Metal, Primed Surface.
Compatible paint systems: Urethane, Epoxy.
Specifications
| Part No. | 123EZ |
|---|---|
| Product Line | FUS |
| MFR Model | 123EZ |
| Standard/Approvals | GHS Hazard |
| Application | For truck beds, tooled door skin, floor pan |
| Manufacturer | LORD Fusor Adhesives |
| UPC | 66623390974 |
| Brand | Fusor® |
| Applicable Materials | 2K Primer, Epoxy 2K Chemistry |
| Composition | 55 to 60% Epoxy Resin, 15 to 20% Alkyl Phenol Blocked Polyisocyanate, 10 to 15% Epoxy Resin, 5 to 10% Epoxy Resin, 1 to 5% Alkyl (C12-14)Glycidyl Ether, 1 to 5% Amide, 0.1 to 0.9% 4-Nonyl Phenol, 0.1 to 0.9% Epoxy Resin (Part A), 1 to 5% Amine Compound, 1 to 5% Amide (Part B) |
| Application Time | 10 min at 70 deg F, 5 min at 70 deg F |
| Paintable (Y/N) | Y |
| Sprayable (Y/N) | N |
| Component | 2K |
| Color | Blue |
| Flash Point | 201 deg F |
| Container Size (oz) | 10.1 |
| Container Type | Cartridge |
| Form | Liquid |
| Type | 2-Part, Medium |
| Curing Time | 24 hr at 70 deg F |
- Product Type
- 2-Part Medium Non-Sag Seam Sealer
- Package Size
- 10.1 oz Cartridge
- Color
- Blue
- Form
- Liquid
- Cure Time
- 24 hours
- Compatible Substrates
- Aluminum, bare metal, 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 123EZ is compatible with aluminum, bare metal, plastic, primer, and steel substrates, making it versatile for most body shop repair applications.
How long does this sealer take to fully cure?
The sealer has a 24-hour curing time for complete cure development.
What does "non-sag" mean for this product?
Non-sag formulation means the sealer maintains its applied shape on vertical surfaces without dripping or flowing, allowing for precise seam sealing on body panels and joints.
Documents & Safety
- Safety Data Sheet (SDS)
- Technical Data Sheet (TDS)
- fusor_517_catalog.pdf
- fusor_123ez_specification_sheet.pdf
- FUSOR_%20123EZ%2C_126EZ_NON-SAG_SEAM_SEALER_PT_B.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
10-15
Paintable
30
Full cure
24
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.
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