Bored Tunnels - Tunnel Segment Gaskets
For the segmental lining of bored tunnels Trelleborg supplies tunnel segment gaskets (TSGs) under the trade name Heinke. Heinke TSGs, which are located in precast grooves encircling the mating facesof each segment, give a secure rubber-to rubber waterproof seal as soon as the segments are bolted together.
The low compression set and stress relaxation values of the elastomeric compound used in their manufacture enable elastomeric TSGs to recover under reduced applied load thereby maintaining a positive seal between segments despite ground movements.Trelleborg manufactures a range of Heinke TSGs designed for precast concrete, steel and cast iron segments used in the lining of tunnels or shafts and large mains sewers. All are precision engineered to meet the precise requirements of individual projects.
Tunnel Segment Gaskets product Information sheet [pdf]