568-234 PTFE ORINGS FDA

APG stocks the TFE234, an AS568-234 white PTFE (Teflon) 55 Shore D O-Ring built to an inside diameter of 2.984 in (75.79 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.262 in (82.85 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists steam, nearly all industrial chemicals, and solvents. That behavior comes from the compound itself: PTFE (Teflon) offers one of the lowest coefficients of friction of any solid and excellent dielectric properties. Service temperature is rated from -65°F (-53.9°C) through 500°F (260°C). Applications involving service requiring elastic recovery or molten alkali metals call for a different compound.

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

TFE234 ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.