Elastomers have good erosion resistance. They are used in coating materials sucentible to solid particle erosion, such as fibre glass reinforced polymers. Erosion parameters of the attacking solid particles affecting erosion resistance of elastomers are reviewed. A model connecting erosion resistance and mechanical properties of elastomers is suggeted and experimentaly verified. A constant is proposed in the model and it explained in light of parameters of the erosive particles. The model shows that selection of an elastomer with high erosion resistance is based on selection of an elastomer having a big product of fracture strength and strain. Further work is suggested on study of effect of thick-ness of the elastomer coat on erosion resistance of the coated material.