This product is an envelope back seam gum designed for high speed machines such as the F.L.Smithe RA and W&D 527. Its rheology has been tailored to minimize throwing and maximize gumbox stability. It will bond a wide variety of paper stocks without staining or bleed-through. When properly applied, this product does not create wrinkled seams or lead to tabbing. Liquid Adhesive available in 5 gallon pails, 55 gallon drums, and totes.