PROFESSIONAL-GRADE PLASTIC CEMENT — Weld-On #4784 is a high-performance solvent cement engineered for strong, durable bonds on compatible thermoplastics. Formulated for industrial and fabrication use, this cement delivers reliable adhesion for demanding assembly and repair applications where bond integrity and consistency are critical to finished part performance. GALLON CONTAINER — Full gallon (128 fl oz) of Weld-On #4784 cement provides ample volume for large-scale production runs, ongoing fabrication work, or shop use. Bulk quantity reduces interruptions and per-unit cost. Ideal for professional fabricators, production facilities, and shops requiring a consistent, readily available supply of quality solvent cement. VERSATILE APPLICATIONS — Designed for plastic bonding, fabrication, repair, and assembly across industries including signage, displays, manufacturing, construction, and prototype development. Suitable for joining compatible thermoplastic components where a strong solvent bond is required. Trusted by fabricators, engineers, and technicians for production and custom project work. EASY APPLICATION — Apply Weld-On #4784 with a brush, dauber, or applicator to clean, properly prepared mating surfaces. Solvent cement works by chemically fusing compatible plastic substrates for a molecular-level bond. Ensure adequate ventilation during use. Compatible with standard plastic fabrication workflows including bonding, assembly, and structural 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. Weld-On #4784 is a medium syrup, fast set solvent cement that provides a flexible bond. It is ideal for bonding flexible or rigid vinyl to itself or other materials such as canvas, fabrics, ABS, acrylics, butyrate, and polyurethane. It is weather resistant. It takes 72 hours before 80% of the ultimate bond strength is reached.