Best Reducer Flexible Couplings in 2026

PVC caps offer a quick, easy way to cap pipe ends, test pipes and clean-outs

Compatible with cast iron, plastic, Copper, or schedule 40 steel piping

May be used for non-pressure drain, waste, and vent (dev. ) piping systems and sewer systems indoors and outdoors

IMPORTANT SIZE INFO: flexible coupling's inner diameter is 1.3 inches and connects with the pipe's outer diameter of 1.3 inches so the pipe nominal size is the 1-inch industry standard

COMPATIBLE WITH MULTIPLE PIPING SYSTEM: flexible coupling connects DWV (drain-waste-vent) piping, cast iron, plastic, copper, or schedule 40 steel pipe

FOLLOW THE MARKINGS: each rubber fitting is marked with part number, size, and certification

Extra long design to accommodate extreme pipe connections.

The Fernco XL Coupling is 7.75" long, creating a stronger, and more durable coupling than any other on the market.

For sewer and drain, waste and vent piping. Maximum test pressure: 4.3 PSI

Universal fit: flexible coupling compatible with cast iron, Copper, plastic, and schedule 40 steel piping

Sealed: flexible Connectors are leak-proof, rot-proof and sealed against infiltration and exfiltration,

Use: may be used for non-pressure drain, waste, and vent (dwv) piping systems and sewer systems indoors and outdoors

Universal fit: flexible coupling compatible with cast iron, Copper, plastic, and schedule 40 steel piping

Sealed: flexible Connectors are leak-proof, rot-proof and sealed against infiltration and exfiltration,

Use: may be used for non-pressure drain, waste, and vent (dwv) piping systems and sewer systems indoors and outdoors

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 1.63" and fits pipe ODs between 1.40" - 1.70".

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-125W coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 1.63" and 1.94" and fits pipe ODs between 1.40" - 1.70" x 1.70" - 2.05"

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-150/125 reducer coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 1.63" and fits pipe ODs between 1.40" - 1.70".

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-125 coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 1.63" and 1.94" and fits pipe ODs between 1.40" - 1.70" x 1.70" - 2.05"

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-150/125 reducer coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 2.35" and 4.40" and fits pipe ODs between 2.25" - 2.50" x 4.00" - 4.50"

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-42 reducer coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.

UNMATCHED QUALITY & PERFORMANCE: Built for a 50-year service life, Fernco couplings are made from elastomeric polyvinyl chloride for a strong, leak-proof fitting that's resistant to chemicals and sewer gases.

FLEXIBLE FIT: To choose the right coupling, measure the outside diameter (OD) of your pipe. This coupling has an internal diameter (ID) of 1.63" and fits pipe ODs between 1.40" - 1.70".

CONNECT VARIOUS PIPE TYPES: The Fernco 1056-125G coupling connects Plastic (PVC, ABS, CPVC, Smooth Wall HDPE), Cast Iron, Copper, Steel or Lead Pipe for a watertight joint. For sewer and drain, waste and vent piping.