568-404 PTFE ORINGS FDA

This o-ring is supplied in AS568-404 white PTFE (Teflon) 55 Shore D built to an inside diameter of 1.85 in (46.99 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 2.4 in (60.96 mm), catalogued under part number TFE404. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

PTFE (Teflon) is widely chosen for non-stick, non-contaminating surface characteristics and excellent dielectric properties. It resists steam, strong acids and bases, and solvents. Published continuous service range is -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with elemental fluorine at temperature or service requiring elastic recovery.

Maintenance and OEM teams specify it across pharmaceutical and biotech, laboratory equipment, and chemical processing.

TFE404 ships individually. Nominal inside diameter is listed as 1 7/8 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.