-437 BLACK AFLAS 80D O-RING

Part number A80437 is an AS568-437 black Aflas (TFE/P) 80 Shore A O-Ring supplied with an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Expect good resistance to brake fluids and phosphate esters, sour gas and hydrogen sulfide, and amines and corrosion inhibitors. That behavior comes from the compound itself: Aflas (TFE/P) is specified for proven performance in aggressive downhole environments and exceptional resistance to amine-based additives. Published continuous service range is -25°F (-31.7°C) to 450°F (232.2°C). Exposure to some chlorinated solvents or low-temperature dynamic service will shorten service life.

You will find this material specified across chemical processing, geothermal equipment, and downhole tooling.

Order part number A80437, sold individually. Nominal inside diameter is listed as 6 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.