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Weld-On Acrylic Solvent Cements (MC-Free & Legacy)

Now Shipping: MC-Free Weld-On 3, 4 & 16

The next generation of acrylic solvent cements has arrived. Weld-On 3, 4 & 16 are now available in fully reformulated versions that remove
methylene chloride (MC) and trichloroethylene (TCE)—without sacrificing bond strength, cure speed, or clarity. These DCM & TCE Free alternatives are engineered to meet new EPA regulations while preserving the performance that sign makers and plastic fabricators demand.

Key EPA & OSHA Deadlines

  • 31 Jul 2025: IPS completes final production of MC-based Weld-On
  • 28 Jan 2026: Distributors must stop sales; end-users without WCPP must stop use
  • 28 Apr 2034: WCPP holders may continue solvent welding through this date

Plan Your Transition

Chemical Concepts now stocks both legacy MC-based products (while supplies last) and new MC-free formulas for Weld-On 3, 4 & 16.
The updated versions offer the same viscosity grades, set times, and application methods—no retraining required. Request SDS sheets, performance data, or sample stock to validate in your process.

Need help with selection or SDS compliance?

Our sign and plastics specialists can coordinate last-time buys, guide your OSHA compliance, or match the best Weld-On cement for your application.


Performance Snapshot

Weld-On 3 DCM & TCE Free

  • Water-thin capillary action
  • 1–2 min fixture time
  • Ideal for museum-grade seams

Weld-On 4 DCM & TCE Free

  • Blush-resistant, optically clear bonds
  • Slightly longer working time
  • Preferred for POP displays & signage

Weld-On 16 DCM & TCE Free

  • Medium-bodied gap filler
  • Strong, water/weather-resistant bonds
  • Great for channel letters & industrial assemblies

Now Shipping: MC-Free Weld-On 3, 4 & 16

The next generation of acrylic solvent cements has arrived. Weld-On 3, 4 & 16 are now available in fully reformulated versions that remove
methylene chloride (MC) and trichloroethylene (TCE)—without sacrificing bond strength, cure speed, or clarity. These DCM & TCE Free alternatives are engineered to meet new EPA regulations while preserving the performance that sign makers and plastic fabricators demand.

Key EPA & OSHA Deadlines

  • 31 Jul 2025: IPS completes final production of MC-based Weld-On
  • 28 Jan 2026: Distributors must stop sales; end-users without WCPP must stop use
  • 28 Apr 2034: WCPP holders may continue solvent welding through this date

Plan Your Transition

Chemical Concepts now stocks both legacy MC-based products (while supplies last) and new MC-free formulas for Weld-On 3, 4 & 16.
The updated versions offer the same viscosity grades, set times, and application methods—no retraining required. Request SDS sheets, performance data, or sample stock to validate in your process.

Need help with selection or SDS compliance?

Our sign and plastics specialists can coordinate last-time buys, guide your OSHA compliance, or match the best Weld-On cement for your application.


Performance Snapshot

Weld-On 3 DCM & TCE Free

  • Water-thin capillary action
  • 1–2 min fixture time
  • Ideal for museum-grade seams

Weld-On 4 DCM & TCE Free

  • Blush-resistant, optically clear bonds
  • Slightly longer working time
  • Preferred for POP displays & signage

Weld-On 16 DCM & TCE Free

  • Medium-bodied gap filler
  • Strong, water/weather-resistant bonds
  • Great for channel letters & industrial assemblies

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