Gorilla Gold CPVC (chlorinated polyvinyl chloride) cement is a 1-step process with no primer needed. Medium body, low VOC (volatile organic compound), and yellow in color to meet all code inspection requirements. Gorilla Gold can be used on FlowGuard and all other CPVC pipes and fittings from CTS (copper tube size) up to 2" in diameter. Allow 2 minutes for proper handling time and 2 hours for full cure time. Gorilla Gold meets ASTM (American Society for Testing Materials) D2846 and ASTM F493 specifications.