Several factors influence polymer modified asphalt emulsion sealers in asphalt or bitumen modification systems. Key factors include the type and concentration of polymer used, the compatibility of the polymer with the asphalt binder, the temperature during mixing and application, and the curing conditions. Additionally, the properties of the base asphalt, such as viscosity and penetration grade, as well as environmental conditions during application, play crucial roles in the performance and durability of the modified emulsion.