The FC5622 Rubber Coupling Flexible Connector - 2" x 2" is a type of flexible pipe coupling used for connecting non-pressure drain, waste, and vent (DWV) piping systems.  
Key Features and Specifications
Size: 2 inches x 2 inches (nominal).
Material: Made of durable elastomeric polyvinyl chloride (PVC) with corrosion-resistant 300 series stainless steel clamps.
Pipe Compatibility: Designed to connect various pipe materials including plastic (PVC, ABS, CPVC, Smooth Wall HDPE), cast iron, copper, steel, or lead pipes.
Applications: Primarily used for sewer, drain, waste, and vent piping applications, and is rated for underground use. It is not for use on pressurized plumbing systems.
Pressure Rating: Maximum test pressure of 4.3 PSI (29.6 KPA).
Temperature Range: Suitable for continuous temperatures from -30°F to 140°F (-30ºC to 60ºC).
Resistance: The coupling is leak-proof, root-proof, and resistant to chemicals, UV rays, and fungus growth.
Installation: Easy to install with a screwdriver or torque wrench; no special tools, primer, or glue needed.
Certifications: Conforms to industry standards such as ASTM C1173, ASTM D5926, and CSA B602, and is UPC approved.