Pasco 5666SR Flexible Coupling with Stainless Steel Ring, Cast Iron to Plastic Pipe

Pasco 5666SR Flexible Coupling with Stainless Steel Ring, Cast Iron to Plastic Pipe

The Pasco 5666SR is a flexible transition coupling built to join cast iron pipe or plastic pipe to cast iron pipe or plastic pipe in rough-in drain, waste, and vent (DWV) applications. Available in 4" and 6" sizes, this coupling is secured with a stainless steel ring, giving plumbers and contractors a dependable way to tie dissimilar pipe materials together behind the wall or under the floor without sourcing separate reducing fittings for each material combination. Sold in a case quantity of 50 EA, with a minimum order quantity of 1 EA, the 5666SR is suited for contractors stocking rough-in supply for repair, retrofit, and new construction work wherever cast iron meets plastic DWV piping.

Key Features

• Available Sizes: Offered in 4" and 6" sizes to match common cast iron and plastic DWV pipe diameters found in rough-in plumbing.
• Flexible Coupling Design: Connects cast iron pipe or plastic pipe to cast iron pipe or plastic pipe, allowing a single fitting to bridge two different pipe materials on a DWV run.
• Stainless Steel Ring: The coupling is banded with a stainless steel ring for a secure, durable clamp-down at the pipe transition point.
• Transition Fitting: Eliminates the need for multiple material-specific couplings when a drain, waste, or vent line transitions from cast iron to plastic or plastic to cast iron.
• Case Packaging: Supplied 50 EA per case, with a minimum order quantity of 1 EA, making it practical for stocking trucks or supply houses.
• Rough-In Application: Designed for behind-the-wall and under-floor plumbing connections rather than exposed decorative fixtures.

Technical Specifications

• Prop 65 Warning: Y
• Size Range: 4" - 6"
• Quantity: 50 EA per case
• Minimum Order Quantity: 1 EA

Typical Applications

• Cast Iron to Plastic Drain-Waste-Vent Transitions
• Residential and Commercial Rough-In Plumbing
• Pipe Repair and Retrofit Work
• New Construction DWV Installations
• Supply House and Contractor Truck Stock

Why Pasco?

Pasco supplies rough-in plumbing hardware built for the everyday demands of contractors and plumbing crews. The 5666SR flexible coupling's stainless steel ring construction is designed to give installers a dependable transition point when joining cast iron and plastic pipe in 4" or 6" sizes, helping crews complete DWV connections without sourcing multiple specialty fittings for each material pairing. Stocked in case quantities of 50 EA with a minimum order quantity of 1 EA, it supports efficient truck and warehouse inventory for trade professionals handling both repair and new installation projects across a range of rough-in pipe diameters.