These sealants must be cured with heat. Apply 120-140C air from the heat-gun (soldering station or whatever). After it's been cured, excessive residue to be removed mechanically so that it won't introduce any obstacles on the LOCA glue path, flowing down LCD sides. Nothing to say the sealant must not overhang LCD surface.
The strong property of these sealants is that those are easy to remove from protected surface. But only if it's properly cured! ,)
I bought three of these: the Clear,the White and the Blue. Clear & White eppear to get cured by both heat and UV lamp; the Blue only got cured by heat.