568-406 PTFE ORINGS FDA

APG stocks the TFE406, an AS568-406 white PTFE (Teflon) 55 Shore D O-Ring measuring an inside diameter of 2.1 in (53.34 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.65 in (67.31 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to steam, solvents, and nearly all industrial chemicals. That behavior comes from the compound itself: PTFE (Teflon) is valued for excellent dielectric properties and one of the lowest coefficients of friction of any solid. Continuous operating temperature is published at -65°F (-53.9°C) to 500°F (260°C). Exposure to service requiring elastic recovery or molten alkali metals will shorten service life.

You will find this material specified across aggressive-media pipelines, laboratory equipment, and pharmaceutical and biotech.

Order part number TFE406, sold individually. Nominal inside diameter is listed as 2 1/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.