**568-284 PTFE ORINGS FDA

Part number TFE284 is an AS568-284 white PTFE (Teflon) 55 Shore D O-Ring measuring an inside diameter of 17.955 in (456.06 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 18.233 in (463.12 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

PTFE (Teflon) delivers non-stick, non-contaminating surface characteristics and near-universal chemical inertness. The material holds up against strong acids and bases, solvents, and nearly all industrial chemicals. Published continuous service range is -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with service requiring elastic recovery or elemental fluorine at temperature.

You will find this material specified across food and beverage, laboratory equipment, and chemical processing.

TFE284 ships individually. Nominal inside diameter is listed as 18 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.