110mm 4″ Fernco Type Flex Seal – Universal Cast Iron to Plastic Rubber Coupler

110mm 4″ Fernco Type Flex Seal – Universal Cast Iron to Plastic Rubber Coupler

• For plumbing waste pipes of ALL material
• Simply slide the fitting over the pipe and clamp the jubilee clip down using a screwdriver or small spanner

Can be used to:

• Connect old existing pipe to new pipes
• Connect different pipe materials together
• Connect different sized pipes together

The fitting is advertised for 4″ but you can get a few MM adjustment up wards and usually a lot down wards. It truly is a very versatile fitting

Can be used for quick pipe repairs eliminating the need for a plumber, saving you time and money!

Perfect for adapting old obsolete cast iron pipe to plastic. Please note that this fitting is designed to go over plain ended pipe and NOT a socket, the socket would have to be removed prior to installation

Details

This 110mm (4″) Fernco Type Flex Seal provides a rugged solution for connecting different drainage materials. This coupler joins heavyweight cast iron pipes to modern plastic (PVC) systems with a professional, airtight seal. A thick, high-performance elastomeric rubber sleeve works with two stainless steel tension bands to prevent leaks under high pressure. These components withstand harsh underground conditions and chemical exposure. Consequently, this industry-standard fitting offers the most reliable way to bridge the gap between traditional metal and modern plastic pipework.

Connecting modern PVC pipes to old cast iron drainage often uncovers a frustrating technical mismatch. Cast iron pipes typically feature rough, corroded surfaces and irregular external diameters that reject standard rigid fittings. If you attempt to use a basic push-fit connector on a pitted metal surface, you create a high risk of sewage leaks and root ingress. Furthermore, the extreme weight and rigidity of cast iron can snap standard plastic joints during natural ground shifts. However, this Universal Flex Seal Coupler solves these issues. The heavy-duty rubber sleeve conforms to the irregular texture of old iron to create a perfect, flexible grip. Because the stainless steel bands tighten securely around both materials, they maintain a rock-solid joint regardless of surface pitting. Therefore, you secure a permanent, “fit and forget” repair for even the toughest metal-to-plastic transitions.

Brand:

• ALLGAIN

MPN:

• FC-44