Translation of "Rubber" in Finnish

Rubber is made from the sap of the rubber tree.

Kumi tehdään kumipuun mahlasta.

They would need to be rubber so that they are elastic.

Niiden pitäisi olla kumisia, jotta ne joustaisivat.

Tires wear down because of friction between the rubber and the road surface.

Renkaat kuluvat kumin ja tienpinnan välisen hankauksen takia.