The Industrial Empire Built on Parts Nobody Sees

The Part No One Notices Until Everything Fails

Since 1849, more than 370 descendants of one German tanner have built a €11.9 billion global enterprise on components engineered to remain permanently invisible, noticed only when they fail, and failed only to catastrophic effect.

Most industrial strategists measure competitive position through visibility, recognizable brands, named products, and components that appear in purchase specifications.

The instinct is ancient: what customers can see and name, they can request and pay premium prices for. This logic dominates industrial strategy and produces a particular blindness: the assumption that the most visible component is also the most critical.

Building legacy through invisible critical components requires a different discipline, the patience to pursue mastery where quality reveals itself only through absence.

Today, we examine how Freudenberg Group, founded in Weinheim in 1849 during the German Revolution, transformed a tannery's 1929 crisis response into the world's most comprehensive sealing portfolio, accumulating €11.9 billion in annual revenue from parts engineered to disappear into the systems they protect.

Case Study: How Freudenberg Built a €12 Billion Empire Through Invisible Sealing

Carl Johann Freudenberg founded his leather tannery in Weinheim, Germany on February 9, 1849, the same month the surrounding city was convulsed by the opening volleys of the German Revolution.

The timing was deliberately counterintuitive: while competitors were paralyzed by political upheaval, Freudenberg bought a struggling tannery, introduced improved production methods, and within three years had quadrupled revenues and grown his workforce from 50 to 170. 

The four principles he laid down in those first months, modesty, honor, financial solidity, and adaptability to circumstances, proved more durable than the revolution that surrounded his founding.

Three generations later, those four principles would force a transformation that redefined what Freudenberg was.

The Great Depression of 1929 collapsed the company's primary business with devastating speed. By that year, Freudenberg had been producing leather for 80 years, had become Europe's leading tanner through Hermann Ernst Freudenberg's introduction of chrome tanning around 1900, and exported nearly 70% of its production to international markets.

The worldwide depression, combined with high import tariffs that governments imposed in response, shattered those export markets almost simultaneously.

Dr. Hans Freudenberg, managing the company's survival, made a decision that was less strategic than desperate: diversify into the growing automotive industry.

He assigned Walther Simmer, who had been managing tanning machines, the task of developing leather-based cup seals for automobiles.

Simmer worked initially with one employee, then two, pressing leather scraps into seal shapes using a purpose-built screw press, creating a component that would ultimately outlast the leather industry that spawned it.

The first series production of Simmerring radial shaft seals shipped to Wanderer Werke in Zwickau in 1932. The component solved a problem that had afflicted rotating machinery for decades: how to seal the gap between a rotating shaft and a stationary housing without generating excessive friction or permitting fluid leakage.

In 1936, synthetic rubber replaced leather as the sleeve material, transforming a clever leather application into a genuinely industrial product capable of handling temperatures from -50 to +180 degrees Celsius and shaft speeds exceeding 36,000 rpm.

Within two decades, "Simmerring" had become synonymous in German-speaking countries with radial shaft seals of any kind, a proprietary term that entered general industrial vocabulary the way Aspirin entered pharmacies.

The paradox at the center of the Simmerring's commercial dominance is worth pausing on. The seal is engineered to disappear. It sits inside housings, invisible to every operator of every machine it protects, requiring no attention when performing correctly, noticed only when it fails.

And when it fails, the failure is rarely a seal-scale financial event. A Simmerring that permits an aircraft engine shaft to leak lubricant does not cost the price of the seal.

It costs an emergency inspection, an engine overhaul, or in the aerospace and pharmaceutical industries, consequences worth thousands of times the component's purchase price. 

The automotive, aerospace, pharmaceutical, and semiconductor industries do not buy Simmerrings. They buy the catastrophic consequences they avoid.

By 1953, twenty-one years after the first Simmerring entered production, Freudenberg had manufactured 100 million of them.

Today, the company produces more than 200 million Simmerrings annually across applications from automotive transmissions to hydraulic pumps, compressors, and wind turbine gearboxes.

Industries that adopted the Simmerring in the 1930s through 1950s built subsequent generations of machinery to Freudenberg's tolerances, creating supplier relationships that accumulated across generations of product development.

The Freudenberg Group generated €11.9 billion in sales in 2024, more than double its 2013 revenue of approximately €5.6 billion, employing 52,100 people across 60 countries and operating in approximately 40 market segments.

The equity ratio stood at 56.8%, well above the family's codified minimum of 40% established in the 1930s and never relaxed. The company invested €604 million in research and development in 2024, representing 5.1% of sales.

Among the more than 370 descendants of Carl Johann Freudenberg, not one controls more than 2% of the company, a structural safeguard ensuring patient capital logic remains distributed across the full ownership breadth.

The company's Business Principles, codified in the 1930s, specify that Freudenberg operates only where it achieves first or second market position, not in brand recognition, but in engineering capability within each application segment.

The organization that refuses to enter markets where it cannot achieve technical leadership quietly becomes irreplaceable in the ones where it can. 

After 175 years and seven generations, more than 370 family partners maintain an enterprise built entirely on components no customer can see, and no competitor has found a way to replace.

From Visible Product to Invisible Critical Infrastructure

1. The Unnamed Component Outlasts Every Branded Competitor

W.L. Gore & Associates, founded in 1958, manufactures PTFE membranes that appear anonymously in more than 45 markets, from aerospace wiring insulation and medical implants to high-frequency circuit boards and waterproof apparel.

Customers cannot request a Gore product by name because the product carries no consumer brand identity.

The component that no end user can specify away from is the component no competitor can displace through marketing. 

When the material becomes the standard inside a product rather than the product itself, switching costs become engineering requirements rather than preference choices, compounding with each successive generation of equipment designed around the existing specification.

2. Distribute Ownership Until No Individual Can Imperil the Institution

Hermès, whose founding family distributed ownership across hundreds of descendants through a holding company structure, demonstrated the architecture's durability in 2010 when LVMH covertly accumulated a 17 percent stake.

The family's distributed ownership structure activated a holding vehicle that locked out the acquirer and preserved control through 2014 when LVMH divested.

A governance design that proved more defensible than any legal mechanism the family could have deployed against a single concentrated majority shareholder. 

The institution that distributes ownership widely enough that no individual departure, divorce, or defection can threaten the architecture builds the moat that concentrated ownership can never construct.

3. Grant Market Position Priority Over Revenue Scale

King Kullen, the 96-year-old New York grocery chain credited as America's first modern supermarket, has sustained four generations of Cullen family ownership by defending its position as the most service-intensive grocer in its geography rather than competing on volume with Kroger, Walmart, or Ahold.

Fourth-generation president Tracey Cullen's approach, maintaining density of locations in Long Island rather than expanding footprint, mirrors Freudenberg's mandate to hold first or second position in each application segment.

The organization that redefines its market narrow enough to lead it builds competitive depth that no larger competitor can replicate by simply adding resources. 

Precisely bounded market leadership compounds across generations in ways that undifferentiated scale never achieves.

4. Codify Financial Discipline Before the Crisis Strips It of Context

The Geek Way framework, applied to family business governance by researchers at FFI Practitioner, argues that durable family enterprises systematize what intuition once handled, converting founders' crisis instincts into binding principles before the next generation confronts those crises without the founders' firsthand experience.

Freudenberg's 1930s mandate, maintain an equity ratio of at least 40% through every market cycle, was not a response to a single crisis but a codification of behavior that had survived several.

The governance structure that encodes the founder's financial discipline into binding principles outlasts every generation that lacks the founder's direct knowledge of why those principles exist. 

Codified constraints compound across generations in ways that remembered lessons cannot.

From strategy to legacy

The organizations that endure across generations build what cannot be seen, name what cannot be branded, and protect what cannot be replaced, finding competitive irreplaceability in the components their customers never knew they depended upon.

There is a particular kind of institutional patience required to build what cannot be seen.

The instinct to brand and claim is deeply human, and in certain industries, precisely the wrong instinct.

Organizations mastering invisible critical position discover their deepest advantages in components no customer can name, proving that invisibility, systematically pursued across generations, becomes the architecture of irreplaceability.

Until next time.

- Legacy Beyond Profits