Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.

Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.

Abstract: An aviation filter including an injection molded plastic ring that is formed with only a slight clearance relative to the outer diameter of the cylindrical metal filter. The ring includes an inner circumferential lip that snaps into a recess formed in a rolled seam on an end of the filter, and secured via an adhesive. The ring includes holes that receive a wire connected to corresponding tie downs formed on the mount. A method of manufacturing an aviation filter includes the steps of snapping the plastic lock ring into place on the filter, and using an adhesive to hold the ring in place against rotation.