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Browse Popular Couplings

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Start with Fernco’s most requested product categories for repair, replacement and underground connection work.

Built for the jobs that need confidence.

Explore three of Fernco’s most recognized coupling families, from universal underground connections to shielded repair and above-ground specialty applications.

Universal Underground Connector

HULK

A heavy-duty universal coupling designed to help municipalities and contractors connect unknown or mixed underground pipe materials with fewer headaches.

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Shielded Underground Repair

Strong Back

Shielded RC couplings built for demanding underground transitions, giving crews added stability where alignment and reliability matter.

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Above-Ground Specialty Couplings

Proflex

Specialty shielded couplings for above-ground applications, designed for clean transitions between common DWV pipe materials.

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Product Literature

Catalogs, drawings and resources.

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Product Catalogs

WaterWorks Product Line Catalog

Apr 14th 2025 31.21 MB

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Looking for other resources?

Find buying information, dimensional drawings and helpful company resources.

Where to Buy Locate Fernco products through distributors and retail partners. Dimensional Drawings Find technical drawings and sizing information for Fernco products. About Fernco Learn more about Fernco, our history and commitment to reliable connections.

Latest From Fernco

Product news, updates and field stories.

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Latest Articles

Company news, product releases and featured updates.

Latest Articles

Section:

News

Standard Couplings vs. Strong Back RC: A Water Slide Lesson in Shear Resistance

By Fernco Traveller

Even on vacation, you cannot completely turn off the part of your brain that notices how things are connected.

Last week, I was at a water park with my family. Somewhere between the wave pool and the lazy river, I found myself standing beneath one of the large slides, studying the drain piping overhead.

Occupational hazard.

Fernco Introduces Flap Valves for Flood and Backflow Protection

Section:

News

Fernco Introduces HMWPE Flap Valves for Flood and Backflow Protection

DAVISON, Mich., June 9, 2026 — Fernco Inc., a leader in flexible pipe coupling solutions, today announced the launch of its new flap valve product line, expanding the company’s portfolio into the growing market for stormwater management and backflow prevention.

Section:

News

Fernco Expands AIS + BABA Compliance Across Core Repair Coupling Lines

DAVISON, MI — April 7, 2026 – Fernco Inc. is taking a major step forward in what “Built Here” means for the trades and the communities they serve. Through expanded AIS (American Iron and Steel) and BABA (Build America, Buy America) compliance, Fernco is completing domestic sourcing for remaining components across select core repair coupling families down to the smallest parts.

Section:

News

Fernco Expands Infrastructure Offering With Manhole Rehab and Trenchless Pipe Repair Solutions

Fernco announced today the launch of Fernco Infrastructure, a comprehensive suite of solutions designed to help address the growing challenges of aging and deteriorating infrastructure. Building on decades of leadership in plumbing, wastewater, and drainage, Fernco is expanding its focus to support municipalities, contractors, and distributors with products that make pipe and manhole rehabilitation easier to specify, source, and install. Fernco Infrastructure is

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