Illbruck TP605 Compriband 20mm x 20mm x 12.5m Sealing Tape - Lockmaster
Compriband Joint Sealing Tape, Compressive Band, 20/8 Charcoal Grey, Band Width 20 mm, Expands from 8 to 28 mm, – 4.3 Metre Roll : Amazon.co.uk: DIY & Tools
Air and Weather Seals for High Performance Window Installs