LCD Screen: which Replacement-Sealant best to use?

Hi Crew, to re-seal and waterproof my LCD screen after repairing the phone: which sealant comes recommended to replace the original black sealant that gets destroyed when opening-up the phone?

Would any acrylic-based silicone sealant do? I imagine best applied by a syringe with small nozzle?

Cheers Team & keep up the good work & repair revolution!!

JayStar