Cork came in 3 layers of cork put together, not as 1 piece as pictured. No clue what holds the layers together... Probably some sort of glue from all the other corners cut. Large chunks of cork are missing along the edges on several of the layers making for a very poor/no seal.
[Reply from WidgetCo: Sorry the product did not meet your expectations. The manufacturing process does include layers of cork due to their large size. This is a food grade process the same as used on production of many types of wine corks. If the corks are chipped or damaged, we are happy to replace them. Please just reach out to customer service.]