Hellermann tyton helatape power 800 silicone high voltage tape 25mm x 9 1m hellermann tyton 711 00400 p align left this helatape power 800 silicone high voltage tape 25mm x 9 1m from hellermann tyton is a self amalgamating chemically cross linked silicone rubber tape equipped with a triangular cross section with centre line for precise half overlapping while resistant to creepage and surface erosion p hellermanntyton 711 00400 helatape power 800 self amalgamating tape 25mmx9 1m