The tape has a polyethylene coating and has a tighter weave than 4662 and 4663. Very good adhesion even on uneven surfaces. Easy to tear off by hand, waterproof and age resistant. Stable yet flexible. Extremely suitable for repairs, labelling, packaging, protection and bundling. tesa 4688 is certified by AREVA according to the requirements of Siemens AG standard TLV 9027/01/06 for nuclear power plants.