Jones Stephens replacement plumbing parts, hardware, and tools are designed with quality engineering and construction to be durable and reliable. All parts, components and hardware are manufactured to Jones Stephens'' highest quality standards for contractors and maintenance repair professionals. This 24'' PTFE Teflon style string packing is a good choice to pack and seal stems, valves and flanges. You can replace any size or shape of stem packing by simply wrapping the packing around the stem and tightening down the packing nut. Buy with confidence and be assured that our complete selection of plumbing accessories will get the job done.