2103-232 PTFE S/T BUP FDA

Part number TST232 is an AS568-232 white PTFE (Teflon) 55 Shore D Back-Up Ring built to an inside diameter of 2.734 in (69.44 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.012 in (76.5 mm). A back-up ring bridges the extrusion gap so the primary seal holds its shape under load.

Expect good resistance to oxidizing media, strong acids and bases, and nearly all industrial chemicals. That behavior comes from the compound itself: PTFE (Teflon) is valued for non-stick, non-contaminating surface characteristics and a very wide continuous service temperature range. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service. Exposure to molten alkali metals or elemental fluorine at temperature will shorten service life.

You will find this material specified across aggressive-media pipelines, food and beverage, and chemical processing.

Order part number TST232, sold individually. Nominal inside diameter is listed as 2 3/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.