| Show Many Non-Metal Non Parts Are Used in Automobile Steel and iron are the basic ma ma- materials materials materials of automobile cons ruction but a surprising number of non me nonmetallic nonmetallic substances enter also Rubber is the principal contributor to quiet vibration free vibration free riding pro pro- providing providing providing viding cushions between frame am and body bumpers to take the shock o of slamming doors and gas to keep out drafts cement t to seal joints along the floor pads t to keep feet from f om skidding off the ped pede pedals pedals als hose for radiator heater an and windshield wiper mats for running boards and floor All told a number of cars have a amany as many as rubber parts and on one of current manufacture has Six Six- Sixty Sixty Sixty ty pounds of rubber products apart apar from tires is not unusual in a car Next to rubber perhaps the mos most useful non metallic ingredients ar arthe are arc the plastics which serve many use useful ful purposes of which some ar are conspicuously new though really be be- belonging belonging longing to a family of products with which engineers have been long fa fa- fa It was at least three dec deo- decades decades ades ago that were taken up as substitutes substitutes' fo for defective electrical insulation Today To To- Today Today day similar synthetic products ar are widely used also for steering wheel rims control knobs Instrument pan pan- panels panels els cIs and an elsewhere else |
