Specialty Shielded Coupling, Connects Cast Iron to Plastic/Steel/Cast Iron, 4 In.

Shielded specialty couplings, 4" cast iron to 4" plastic, steel or extra heavy cast iron. Proflex allows you to make transition pipe connections that are resistant to shear forces, while creating a rigid, long-lasting pipe joint. From 1-1/2" to 8", Proflex connects cast iron, plastic, steel, copper and tubular drain waste and vent systems.