Description
Please note: Weld-On 3, 4, and 16 are restricted under South Coast Air Quality Management District (SCAQMD) Rule 1168, which caps VOC content for solvent cements. These products cannot be shipped to or used in areas regulated by SCAQMD — Los Angeles, Riverside, San Bernardino, and Orange counties.
Safer Solvent Cement with Identical Performance to Legacy Weld-On 4
Weld-On® 4 DCM & TCE Free is a water-thin, fast-setting acrylic cement specifically designed for crystal-clear bonds—without the blushing. Reformulated to eliminate methylene chloride (DCM) and trichloroethylene (TCE), this next-generation product offers the same trusted performance with improved safety, simplified SDS compliance, and full alignment with 2026 EPA regulations.
Compared to Weld-On 3, this formula provides slightly longer working and fixture times, giving users added precision for alignment without sacrificing speed. It is especially valuable for optical-grade signage, display cases, and medical enclosures where finish clarity is critical.
Key Features & Benefits
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DCM & TCE Free – Fully compliant with EPA solvent bans effective January 2026
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Blush-Resistant – Minimizes white marks in high-humidity environments
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Water-Thin Viscosity – Ideal for capillary and soak bonding of acrylic (PMMA)
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Fast Fixture Time – Sets in approximately 3 minutes
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Crystal-Clear Results – Delivers professional finishes in visible applications
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Same Process, Safer Chemistry – No need to retrain technicians or alter your workflow
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Low VOC – Reduced health risks in ventilated or enclosed areas
Common Applications
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Bonding acrylic letters to signage panels
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Display case and POP fabrication
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Medical device enclosures
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Trim capping of acrylic cutouts
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Plastic container bonding
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Acrylic subassemblies in manufacturing and fabrication
Technical Specifications
| Property | Value |
|---|---|
| Color | Clear |
| Viscosity | Water-thin |
| Working Time | 1–2 minutes |
| Fixture Time | 3 minutes |
| Cure Time (80% strength) | 72 hours |
| Ultimate Bond Strength | 2,429 psi |
| Specific Gravity | 1.164 ± 0.01 |
| Shelf Life | 2 years (sealed container) |
| Recommended Substrates | Cast & extruded acrylic (PMMA) |
| Not for Use On | Cross-linked acrylic |
Packaging & Stock Numbers
| Size | Units/Case | Approx. Lbs/Case | Stock Number |
|---|---|---|---|
| Gallon | 4 | 51 | 16374 |
| Quart | 4 | 14 | 16377 |
| Pint | 6 | 10 | 16375 |
| ¼ Pint | 24 | 11 | 16376 |
📦 Ships in sealed metal cans. UN1133 Class 3 Flammable Liquid.
Contact us for bulk orders, SDS, or evaluation samples.
Compliance & Regulatory Info
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EPA 2024 Rule: MC-based solvent cements prohibited after Jan 28, 2026
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Weld-On 4 DCM & TCE Free meets all regulatory mandates
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Ideal for facilities without Workplace Chemical Protection Programs (WCPP)
Why Choose Weld-On 4?
If you need optically clear, durable acrylic bonds without white marks, Weld-On 4 DCM & TCE Free is your best-in-class solution. Perfect for sign makers, plastic fabricators, and medical OEMs, this blush-resistant cement ensures high-performance bonding with a cleaner, safer formulation.
Ordering & Support
Call: 800-220-1966
Email: [email protected]
Ask about evaluation samples or transitioning your workflow to MC-Free options.
Related Products
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Weld-On 3 DCM & TCE Free – Fastest set time, ideal for basic acrylic bonding
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Weld-On 16 DCM & TCE Free – Medium-bodied, gap-filling acrylic cement
- Legacy Weld-On 4 (MC-based) – Available while supplies last
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