The Smok Novo 4 Replacement LP1 Coils is specially designed for leak-proof vaping. Each coil in this series uses 3 silicone rings to provide tightness. The LP1 series coils have: LP1 Meshed 0.8ohm Coil, LP1 DC 0.8ohm MTL Coil, and  LP1 Meshed 1.2ohm Coil. When inserting the coil into the Smok Novo 4 Pod, the added silicone ring on the bottom of the coil would fill the gap, effectively stemming the liquid leaking from the pod that results in a messy vaping experience or dirty hand.