Pentair Drain and Vent Valve O-Ring #-012

The Pentair Drain and Vent Valve O-Ring #-012 (part number 192115 or 192115Z) is a compact, high-precision elastomeric sealing component engineered specifically for manual air relief valves, drain spigots, and pressure gauge adapters across various Pentair filtration systems, including the Clean & Clear, FNS Plus, and Quad D.E. filter series. Molded from a premium, high-density synthetic nitrile (Buna-N) rubber, this small circular gasket adheres to standard AS568 dash-number 012 dimensions, featuring an approximate 3/8-inch inner diameter and a 1/16-inch cross-sectional thickness. Its primary structural role is to seat securely within the machined collar groove of the manual vent valve stem or drain plug insert, establishing an absolute airtight and watertight compression boundary when the valve is closed hand-tight against the pressurized filter dome. This critical seal ensures the tank can safely maintain continuous hydraulic operating pressures up to 50 PSI without slow weeping, air leaks, or pressure drops. Engineered to resist deformation under constant compression, it easily tolerates relentless outdoor UV exposure, severe seasonal temperature shifts, and prolonged contact with harsh pool chemistry like chlorine and bromine. Due to its miniature, low-profile elastomer architecture, this individual vent valve O-ring is exceptionally lightweight, carrying a nominal product and shipping weight of approximately 0.01 pounds (about 0.16 ounces).