RTEC P Series filters feature an polyester fiber/phenolic resin construction that produces an extremely rigid pore structure. This construction allows the filter to withstand extremes of viscosity and temperature without compression or collapse. In addition, a true graded density construction allows complete utilization of the filters depth, with coarse particles captured in the outer zones and finer particles captured nearer the core. Typical Applications: Paints, Inks, Sealants, Adhesives, Lacquers, Varnishes, Shellacs, Fuel Oils, Crude Oils, Grease, Machine Coolants, Silicones, Antifreeze, Plasticizers, Animal Oils.