Master the three critical sealing methods—heat-shrinkable and mechanical approaches—to protect your fiber optic infrastructure and ensure long-term network performance and signal integrity. Equip yourself with the knowledge to choose the right fiber joint closure for any application. First, it protects against environmental hazards such as moisture, dust, and debris that can damage delicate fiber optic cables., FTTH, FTTP, FTTM), splicing is essential for extending cables, repairing breaks, or connecting backbone and distribution lines. The sealing strip should be tightly attached to the groove.