Here is a list of 21 Sealing Devices categories. It encompasses a wide range including sealing materials, airtight sheets, vacuum seals, vacuum flanges, etc. You can search for an overview, principle, and usage of each category, as well as find manufacturers and distributors.
*This ranking is solely among the companies registered with Metoree, sorted by the number of employees. Please use this as a rough guide to understand their scale.