Abstract: This invention provides an inexpensive structure for a protecting jacket for rotatable magnetic recording media which has a dimension sufficient to cover openings on the jacket and is provided as a sheet adhered to the jacket to cover said openings and prevent entry of dust.

Abstract: A scouring pad comprising a fine metal wire pad and a detergent adhered thereto, wherein the detergent comprises a salt of an ester of phosphoric acid having the formula (I):[R(OCH.sub.2 CH.sub.2).sub.m ].sub.x PO.sub.4 H.sub.3-x-y M.sub.y (I)wherein R is alkyl or alkenyl having 10 to 22 carbon atoms or alkylphenyl having 6 to 18 carbon atoms in the alkyl group, wherein said alkyl or alkenyl can be linear or branched, m is from 0 to 10, x is from 1.0 to 2.0, and y is from 0.5 to 2.0, with the proviso that the sum of x and y does not exceed 3, and M is an alkali metal, ammonium, alkanolamine, alkaline earth metal, zinc or aluminum cation, and a fatty acid soap having 10 to 22 carbon atoms.