It is highly likely this is either a typo, a specific internal model code, or a mix of different terms.
Using a caulk gun, apply a thick bead of DAP DynaGrip Heavy Duty to the loose joint or along the torn webbing track. Unlike regular glue, DAP fills gaps (up to 1 inch) so you don’t need a perfect fit. sofa weber dap
However, after reviewing product databases, industry terminology, and major furniture manufacturers (including Weber as a brand known for grills, not sofas), It is highly likely this is either a