This 20 IN 5 micron string wound sediment filter cartridge is made of 100 percent polypropylene string for excellent chemical resistance with no media migration and high quality food grade ingredients for potable water. It does not contain leachables that could contaminate downstream. It is rated for temperatures up to 140 degrees F (60 degrees C) and the water pressure is rated up to 40 psi. Additional Details ------------------------------ Product description: This 20 IN 5 micron string wound sediment filter cartridge is made of 100 percent polypropylene string for excellent chemical resistance with no media migration and high quality food grade ingredients for potable water. It does not contain leachables that could contaminate downstream. It is rated for temperatures up to 140 degrees F (60 degrees C) and the water pressure is rated up to 40 psi.