BURSTPACK consists of SVI’s two-part expanding foam formulation, contained within a specially designed plastic sachet, featuring a series of chambers separated by ‘burst seals’. These allow the resin and hardener to be mixed within the sachet by bursting one of the seals, then inserting the complete, mixed sachet, into the annular space inside the pipe. A secondary ‘burst seal’ ruptures when the foam has sufficiently expanded, allowing the foam to seep out and fully seal the annular space. The application requires little space, reducing the size of excavation needed and can be inserted by hand or by using a specially designed long handled tool.

BURSTPACK is compatible with i-core excavations and is capable of achieving a tight seal even where challenging conditions exist, such as wet and muddy conditions or where the PE is off to the centre of the host metallic main.