KabSeal PRO is a high-performance airtight sealing grommet designed to work with the Lunos installation tube. This tear-resistant, age-resistant grommet can withstand damp climates, making it perfect for fast and permanent airtight sealing of openings in your building. Offering a high level of adhesion, KabSeal PRO is made of permanently flexible rubber, suitable for use across a wide temperature range and both internal and external use.