The abrasive wear of borosilicate glass was studied. Under dry wear conditions, the weight loss of borosilicate glass was not found to be a linear function of the sliding distance. The debris from the worn glass areas was observed to consist of glass particles, silicon carbide particles from the abrasive wheel and agglomerates of glass and silicon carbide. This showed that the wear of borosilicate glass by silicon carbide wheels is mainly abrasive but also adhesive to a lesser degree.