568-351 PTFE ORINGS FDA

TFE351 is an AS568-351 white PTFE (Teflon) 55 Shore D O-Ring supplied with an inside diameter of 4.725 in (120.02 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.145 in (130.68 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to oxidizing media, nearly all industrial chemicals, and solvents. PTFE (Teflon) is valued for a very wide continuous service temperature range 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.

It sees regular use in pharmaceutical and biotech, laboratory equipment, and chemical processing.

TFE351 ships individually. Nominal inside diameter is listed as 4 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.