Aluminium Foil Sheet The thicker sheets of aluminium are resistant to water and oxygen whereas thin sheets do not provide resistant. The aluminium foils are very shiny. The outer surface of these sheets is shiny whereas inner surface is du…

Roller Thrust Bearings Thrust bearings are a special kind of rotary bearing. It revolves between parts indefinitely, just like ordinary bearings, but they're designed to carry a mostly axial load. Because of the wider contact surface, they…