

The design must be such that it balances the need for a tight seal with the amount of friction generated during operation. Excessive friction can lead to wear and heat buildup, while insufficient sealing can allow fluid leakage. Therefore, engineers carefully select materials and dimensions to ensure optimal performance.
In addition to its energy-saving properties, tinted black glass also offers enhanced privacy for occupants. The dark color obscures the view from the outside, making it difficult for passersby to see inside. This is particularly beneficial for office buildings or residential properties located in busy urban areas where privacy is a concern.