Better Vacuum Cups (BVC) says its vacuum cups have 30 percent better holding power and are a fraction of the cost over OEM. BVC rubber tops are over 10mm thick before routing into the plastic, and they use a ball valve to prevent clogged ports and dust in the vacuum system. With a modular plastic design that can be made into a half or quarter cup, BVC rubber tops are sectional; incorporated grooves can accept foam gasket to make a new seal.