568-364 PTFE ORINGS FDA

Part number TFE364 is an AS568-364 white PTFE (Teflon) 55 Shore D O-Ring with an inside diameter of 6.725 in (170.82 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 7.145 in (181.48 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists oxidizing media, strong acids and bases, and nearly all industrial chemicals. That behavior comes from the compound itself: PTFE (Teflon) delivers non-stick, non-contaminating surface characteristics 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 elemental fluorine at temperature call for a different compound.

Maintenance and OEM teams specify it across laboratory equipment, chemical processing, and aggressive-media pipelines.

Reference part number TFE364 when ordering; the item is sold individually. Nominal inside diameter is listed as 6 3/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.