Document 4v1Q8VG4z5B2a2VrxrNe6gQXe

ASBESTOS FACT SHEET Product Automotive Mufflers Automotive Undercoatlng Mawrtgn Asbestos Concentration Asbestos sheet is uasd between the Inner aod outer shell of standard mufflers be cause of Its heat raslstanoe and sound deadening properties. The sheet varies between .030 and .090 Inches thick. Suita ble asbestos substitutes have not been Identified. However, through design phanges asbestos can be eliminated from the product. An Industry respondent Indicated that the two largest domestic auto makers will purchase no asbestos containing mufflers after 1978. V To 90* Undmoatlng on automobiles, trucks, and other vehicles are applied to retard rust and to help prevent stone damage to the bod/. These undercoatings are asphalt or wax based and designed to remain semlvlecous. The costings ere applied by the manufacturer or by specialty undercoating garagea. 5 to 80* Custom Auto Bod/ Filler Published sources report that It Is not uncommon for these body fillers to con tain asbestos. Of those contacted only one Indicated any current use of asbestos fibers. 5* Friction Materials Clutch plates and brake linings contain aabestoe bound In realns. Respondents Indicated that fibers are aechanloally and thermally altered to a non-flbrous form during product use. However, some sources Indicate that unaltered fibers can be emitted during use of the product. 30-70* 1/ Ford Is currently using mufflers where the asbestos has been replaced with fiberglass. Method of Incorporation Paper Scenario for Fiber Release Puncture or deterioration of Inner or outer shell. Consumer Contact In presence of damaged muffler during engine use or muffler repair. Fibers thoroughly mixed In seml-vlscous matrix. Industry sources report that fiber release is highly unlikely. Product widely used In consumer environment, Thoroughly mixed In viscous matrix vhlch becomes hard after application. Fibers generally In felt or cloth form Impregnat ed with resin. Sanding of hardened filler material. taring use fibers may be emitted to the atmosphere or emitted and retained by related mechanical parts and released to atmosphere during repair or replace ment operations. Product available for purchase by consumers. Consumers occasionally repair product incorporating asbestos friction materials! consumers may be present during cosmerclal repair activity. PRODUCED B Y FORD 8002 !*<>*