Good Combination of Sealing Performance and Efficiency 5 gallon cap mold is a vital component. It is not only related to the appearance quality of the product, but also to the sealing performance and safety of the product. In this article, I will elaborate on the role of a compression pipe cap in a 5 gallon cap mold from a manufacturer's perspective. https://www.ld-capmould.com/product/bottle-cap-mould/5-gallon-cap-mould.html