An In-Depth Analysis of the Sealing Performance of Double Insulated Flasks The Double Insulated Flask, a staple in both everyday life and outdoor adventures, is renowned for its ability to maintain the temperature of beverages over extended periods. However, the sealing performance of these flasks is a critical aspect that directly impacts their utility and user satisfaction. This article delves into the intricacies of the sealing mechanisms of Double Insulated Flasks...