Weld-On® 717™ is a clear or gray, low VOC emission, heavy bodied, medium setting, high strength PVC solvent cement for all classes and schedules of pipe and fittings, including Schedule 80, with interference fit through 12" diameter. It has good gap filling properties and is recommended for solvent cementing joints where a sizable gap exists between piping and fittings - e.g. large pipe sizes - and when more working time is required in warm weather. Weld-On® 717™ is for use on all types of PVC plastic pipe applications, Type I and Type II. It is suitable for use with potable water pressure systems, irrigation, turf, conduit, industrial pipe applications, sewer, drain, waste and vent systems. Weld-On® 717™ has a shelf life of three years in a tightly sealed container.