568-138 PTFE ORINGS FDA

Part number TFE138 is an AS568-138 white PTFE (Teflon) 55 Shore D O-Ring measuring an inside diameter of 2.112 in (53.64 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.318 in (58.88 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

The material holds up against oxidizing media, nearly all industrial chemicals, and solvents. That behavior comes from the compound itself: PTFE (Teflon) is specified for a very wide continuous service temperature range and non-stick, non-contaminating surface characteristics. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with service requiring elastic recovery or molten alkali metals.

Maintenance and OEM teams specify it across chemical processing, pharmaceutical and biotech, and semiconductor fabrication.

Reference part number TFE138 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.