A seamless undermount sink system includes a solid countertop having a sink mounting aperture defining an inner periphery disposed therethrough. The system also includes a sink having a sidewall with a rimless upper edge defining an outer periphery therearound. A mounting assembly is attached to a portion of the sink, and an interface is formed between the sink and the solid countertop. A sealing assembly is disposed in the interface between the rimless upper edge of the sink and the solid countertop to prevent water, food, or other debris from getting in between the sink and the solid countertop.