A convenient package, just add PVC pipe and fittings to get a professional, fast installation. Includes 1 can each of 'contractor preferred' Red Hot Blue Glue and Purple Primer, 8 oz. Purple Primer is a professional grade, aggressive primer used to soften PVC and CPVC pipe and fitting surfaces. Red Hot Blue Glue is a professional, highstrength cement for PVC pipe and fittings through 6", schedule 80 through 4". For PVC pipe and fitting applications; potable water, pressure, non-pressure, conduit, drain, duct, DWV and sewer, including Sch.