This type of seal, shaped like the letter “U,” is commonly fabricated from rubber, silicone, or other flexible materials. Fitted over the edges of doors, windows, or other openings, it creates a barrier against the elements. For example, it might be used to seal the gap between a door and its frame.
Effective sealing enhances energy efficiency by minimizing drafts and air leakage, leading to lower heating and cooling costs. It also reduces noise infiltration and protects against dust, insects, and moisture. While specific dates are difficult to pinpoint, this sealing method has evolved alongside advancements in materials science and construction techniques, becoming increasingly sophisticated over time.
