Donaldson Thermo-Web™ cartridge filters combine the unmatched surface loading performance of Ultra-Web® with a proprietary synthetic substrate manufactured to withstand the high temperatures of metallurgical, chemical and industrial applications.
The Ultra-Web outer layer employs a web of very fine, resilient fiber 0.2-0.3 microns in diameter to catch very fine dust particles at the surface of the filter. This prevents particulates from settling deep into the filter substrate, allowing Thermo-Web cartridge filters to last longer than traditional filters. The result is a filter that lasts longer, cleans better and costs less to operate than competitive filters. A wide range of styles and sizes fit most popular brands and styles of collectors.