

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.
4. Versatile Use Heat beds are not solely for back pain; they can also be used to relieve discomfort in other areas of the body, such as the neck, shoulders, and legs. This versatility makes them a valuable addition to any household, especially for those with chronic pain conditions.