Piston-based barrier pack system, available with 4 mm or 7 mm stem inner diameter, engineered for highly viscous formulations. Designed for 360° use, it features a robust metal lever and allows fast filling before valve placement. Compatible with compressed gas propellant, it ensures 96–98% product evacuation, especially for thick formulations. Available with 13 mm, 26 mm, or 44 mm spreaders, and suitable for diverse applications such as silicones, acrylics, glues, and food products.