A group of leading polysulfide sealant producers have launched QPSr, a quality seal for insulating glass sealants. In a competitive, global market, some sealant producers may be tempted to cut corners on quality. The QPS r logo has been created to provide users with a guarantee on the quality of polysulfide sealants, enhancing confidence in the long term properties of the product. Sealants bearing the quality logo fully satisfy the following requirements: they are non-toxic, environmentally sound & do not contain solvents or heavy metals such as mercury & lead; they are based on raw materials produced by ISO 9001 certified suppliers; they can be used on any type of equipment (sealing robots or manual pumps) & have excellent processing characteristics.
