This standard specifies in detail the product classification, technical requirements, test methods, inspection rules and marking, Encasement, transportation, storage, etc. of filter Cardboard. It is suitable for the manufacture of filter Cardboard required for stamping filter gaskets or gaskets for oil filters such as automobiles and tractors. A number of relevant standards are cited, including the determination methods of sample taking, size, quantification, thickness, tensile strength, moisture, etc. of paper and Cardboard, as well as batch inspection counting sampling procedures and sampling tables, Encasement and marking of paper, etc. The filter Cardboard is divided into two types: thin filter Cardboard and thick filter Cardboard. The former is used for the filter in the filter, and the latter is used for the filter pad in the filter. Technical requirements include that the technical specifications of the filter Cardboard must meet the regulations, and the size deviation does not exceed 10.0mm or 5.0mm, and the skew does not exceed 10.0mm or 5.0mm., or according to the Miscellaneous specifications specified in the order contract.