Tests of corrosion resistance of refractory castables to borosilicate glass melt under dynamic conditions were carried out. A method for calculating various indicators characterizing the glass resistance of a refractory exposed to glass melt is presented. On the basis of the data obtained during the tests, the rates of linear corrosion of the submerged part of the samples and at the level of the melt mirror, the rate of bulk corrosion of materials and the relative index of glass resistance were calculated. Based on the analysis of the calculated data, the compositions of refractory castables were identified, which are characterized by high glass resistance, in comparison with other materials. Ill. 4. Ref. 11. Tab. 2.