568-343 PTFE ORINGS FDA

Part number TFE343 is an AS568-343 white PTFE (Teflon) 55 Shore D O-Ring with an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

As a material, PTFE (Teflon) offers a very wide continuous service temperature range and non-stick, non-contaminating surface characteristics. The compound resists strong acids and bases, oxidizing media, and steam. Service temperature is rated from -65°F (-53.9°C) through 500°F (260°C). Verify compatibility before use with elemental fluorine at temperature or service requiring elastic recovery.

You will find this material specified across semiconductor fabrication, pharmaceutical and biotech, and laboratory equipment.

TFE343 ships individually. Nominal inside diameter is listed as 3 3/4 inch. Review your operating media and conditions against this specification before installation.