Pentair 2" #2-139 Teflon Coated Skimmer Plug O-Ring

The Pentair 2" #2-139 Teflon Coated Skimmer Plug O-Ring (part number 192323 or 192323Z) is a specialized, low-friction sealing component designed for various pool and spa applications, notably the 2-inch male-threaded drain plugs of Pentair Bermuda skimmers, Hydropump series pumps, and classic stainless steel D.E. filtration systems like the FNS, Nautilus, and Nautilus Plus lines. Molded from a resilient elastomer core and finished with a smooth polytetrafluoroethylene (PTFE/Teflon) outer coating, this circular gasket follows standard AS568 dash-number 139 dimensions, featuring an approximate 2.125-inch inner diameter and a 3/32-inch cross-sectional thickness. Its primary structural role is to seat securely within the machined perimeter channel of a 2-inch plumbing plug or internal valve shaft, creating an absolute airtight and watertight compression boundary that easily handles continuous hydraulic operating pressures up to 50 PSI. The advanced Teflon coating plays a dual operational role: it drastically reduces surface friction to prevent the rubber from pinching, binding, or tearing during high-torque plug installation, and it provides an extra layer of chemical armor against harsh pool sanitizers like chlorine, bromine, and winterizing acid treatments. Due to its streamlined, low-profile elastomer design, this compact washer adds negligible mass to the plumbing assembly, carrying an exceptionally lightweight product and shipping weight of approximately 0.02 to 0.05 pounds (about 0.32 to 0.80 ounces).