Tunpak® – Recycled Polyethylene Packings

Tunpak® recycled polyethylene sheet is an extremely suitable material for use as a packer between tunnel segment rings, and has been used for this purpose on many major projects throughout the world.

Tunpak® Material has the following qualities:

• Durable
• Non toxic – chemically inert
• Acid and chemical resistant – will resist most chemicals found
• Minimal compression under load – with 100% material thickness recovery on removal of load
• Rot proof – non bio degradable and approved for use in potable water environments

It’s Non-Biodegradable and resistant to the acids and alkalis found in ground water, it is also suitable for use in Potable water Tunnels and was used on the Thames Water Ring Main and Thames Tideway