A special coating is grafted to all surface areas of the long-strand cotton fibers, enabling the filter to chemically attract and capture sub-micron contaminants, thus enhancing filtration efficiency.

puraDYN filter elements contain media treated with an advanced process for chemical grafting (CGP) designed to remove solid contaminants to less than one micron by chemically attracting and bonding them to the filter media. This advanced patent-pending filtration method was developed by puraDYN’s engineers as an effective way to remove the higher volumes and smaller particles of soot being generated by newer engines. These particles are too small to be adequately removed by traditional
filtration media or centrifuge devices.