Oatey PVC medium grey cement is a medium-bodied grey cement for use on all schedules and classes of PVC pipe and fittings up to 6� diameter with interference fit. Oatey sells only low-VOC solvent cements, which means they are compliant with the South Coast Air Quality Management District (SCAQMD) rule 1168. Plus they meet AS, NSF and UPC standards for a wide variety of applications.