IPEX System 636 CPVC Cement - Heavy Bodied is specially designed for use with System 636 Flue Gas Venting pipes and fittings, ensuring secure joints for Type BH, Class IIB 90°C systems that meet ULC S636 standards. This high-quality cement meets ASTM F493 specifications for CPVC plastic pipes, offering strong, durable connections. Ideal for both residential and commercial installations, it features low VOC emissions (490 g/L) and is compatible with System 636 PVC piping. For installations below 0°C and sizes 6" & 8" CPVC, use with System 636 PVC/CPVC Primer.