The HAF50-20, a Suez hypure af resin-bonded, spiral wound filter cartridge with a 50 micron nominal retention and is 20 inches long. The HAF50-20 is suitable for a wide range of applications. The Hypure’s phenolic impregnated polyester yarn filter is excellent for use in High Viscosity, and High Differential pressure applications. hypure af filters are available in micron ratings from 3 to 200 micron and lengths from 9.75 in. to 40 in. Typical lead-time is 2-3 weeks. The HAF50-20 replaces the HPF50-20. Suez Material item number 3137341 replaces item number 1237762.