Weld-On #42 Cement

Weld-On #42 is a two-component (10:1 ratio), reactive, high strength acrylic based adhesive that provides "museum quality" water clear joints with excellent weatherability. Specially formulated to bond acrylic, including extruded cell cast and continuous case; as well as molded parts and some cross-linked sheet. Applicator guns and mixing tips are sold separately for both the 50 ml and 230 ml cartridges.

• INDUSTRIAL-STRENGTH ADHESIVE — Weld-On #42 cement is a professional-grade solvent cement engineered for high-strength plastic bonding applications. Formulated to chemically fuse compatible plastic substrates, creating bonds that resist stress, moisture, and environmental exposure for long-lasting structural integrity in demanding fabrication and assembly environments.
• PRECISION-FORMULATED CEMENT — Weld-On #42 delivers consistent viscosity and controlled working time, allowing proper alignment and assembly before cure. Designed for reliable performance across repeated applications in production and repair settings. Ideal for achieving uniform bond lines with minimal material waste in professional fabrication workflows.
• VERSATILE APPLICATIONS — Trusted across industries including signage, display fabrication, industrial assembly, model making, retail fixtures, and plastic repair. Weld-On #42 is suited for bonding plastic components in construction, manufacturing, and hobby applications where a strong, clean, and durable adhesive joint is required.
• EASY APPLICATION & FABRICATION READY — Apply with brush, needle applicator, or dauber for precise placement. Works with standard plastic fabrication techniques including lap joints, butt joints, and surface bonding. Compatible with common shop tools and workflows. Bonds quickly to minimize downtime and supports high-throughput assembly and repair operations.
• PRECISION TOLERANCES & QUALITY — Dimensions held to +/- 0.010" ensuring consistent, precise fit for fabrication and engineering applications. Manufactured under ISO 9001:2015 certified quality management standards for reliable material quality on every order.