Free water in hydraulic or lube systems is a serious contaminant. Water absorbent layers are co-pleated into the element, which react with water by physically locking the water to the absorbent material via hydrogen bonding so that it cannot return to the oil or fuel. By removing water, oil life is extended as well as the life of your equipment. Protect your hydraulic system from both particulate and water contamination, providing absolute filtration of solid particles to Βx(c) = 1000 levels.