1) Co-extruded strip products have PSA options. Due to the different processes of adhesive and the existence of release liner, compared with non-adhesive products, the length tolerance would be enlarged. When the product is peeled off the release liner and installed, the dimensional tolerances can be restored to the original state.
2) Co-extruded strips are directional when installed in the groove. The non-conductive part can be in contact with water and should be toward the outside to complete environmental sealing, while the conductive part is installed facing inside and is in contact with upper & lower metal covers to form a continuous electric path.