568-155 PTFE ORINGS FDA

Ordered as TFE155, this is an AS568-155 white PTFE (Teflon) 55 Shore D O-Ring measuring an inside diameter of 3.987 in (101.27 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.193 in (106.5 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Expect good resistance to solvents, strong acids and bases, and oxidizing media. PTFE (Teflon) delivers non-stick, non-contaminating surface characteristics and near-universal chemical inertness. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C). Exposure to service requiring elastic recovery or elemental fluorine at temperature will shorten service life.

You will find this material specified across semiconductor fabrication, chemical processing, and laboratory equipment.

Order part number TFE155, sold individually. Nominal inside diameter is listed as 4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.