Pumps and polymers: two quiet industrials rated very high

2026-07-07 · By Lubin Danilo, founder of Lubin Investment

Gorman-Rupp, an American industrial pump maker, earns a perfect score in my screener. Trelleborg, a Swedish engineered polymer group, passes 9 of the 10 criteria. Two different niche businesses, but the same financial discipline rarely seen in heavy industry.

Key takeaways

Gorman-Rupp (GRC), an American industrial pump maker, earns a perfect score in my screener and already has a dedicated analysis on my site.
Trelleborg (TREL-B.ST), a Swedish engineered polymer group, passes 9 of the 10 criteria and had never been covered before.
Both companies trade at similar valuations: roughly 25 times free cash flow for Gorman-Rupp, 26 times for Trelleborg.
No reliable earnings date is available in my data for Trelleborg at the time of writing.

Two niche businesses no one notices

Gorman-Rupp makes industrial pumps used in water treatment, construction, and agriculture, a quiet but essential business: without a reliable pump, a plant or a wastewater facility grinds to a halt. Trelleborg designs engineered polymers (seals, coatings, sealing materials) used in automotive, aerospace, and heavy industry. Both are industrial component businesses no one notices, until they fail.

Gorman-Rupp: already flagged, a perfect score

I've already published a dedicated analysis of Gorman-Rupp on my site, where it passes all ten of my financial criteria. Its model rests on a range of pumps differentiated by application (municipal, agricultural, industrial), which lets it price without being directly comparable to a generic competitor.

Trelleborg: the new addition to this comparison

Trelleborg, which I'm covering here for the first time, passes 9 of the 10 criteria in my screener. The company supplies engineered polymers to a wide range of industries (automotive, aerospace, agriculture, marine), giving it a sector diversification Gorman-Rupp, more concentrated in water and agriculture, doesn't have. That diversification is a real advantage if a specific sector slows down, but it also makes the company harder to follow in detail.

A comparable valuation for two different models

Both companies trade at similar levels: roughly 24.8 times free cash flow for Gorman-Rupp, 26.3 times for Trelleborg. Those levels, neither cheap nor extreme, suggest the market recognizes the quality of these two industrial component makers without getting particularly excited, a typical profile for solid companies that generalist investors rarely follow closely.

The moat of both industrials

Gorman-Rupp's and Trelleborg's moat comes from the same source: technical specialization and the trust built with industrial customers who can't afford a failing pump or seal. Switching suppliers on a critical component involves long, costly qualification testing, which creates durable loyalty once a supplier is qualified.

What to watch

For Trelleborg, the lack of a reliable earnings date in my data prevents me from giving a precise short-term catalyst; I'd recommend checking the date directly with a Swedish financial source before any decision. For both companies, the main point of caution remains their exposure to construction and heavy industry, cyclical sectors sensitive to interest rate levels.

What I take away from this

Gorman-Rupp and Trelleborg illustrate a category of company I particularly appreciate: makers of specialized industrial components, unglamorous, but applying a financial discipline many more high-profile companies lack. These are exactly the kind of names a screener helps surface while they fly under the radar of mainstream financial coverage.

FAQ

What does Gorman-Rupp make?

Industrial pumps used in water treatment, construction, and agriculture, a quiet but essential business.

What does Trelleborg make?

Engineered polymers (seals, coatings, sealing materials) used in automotive, aerospace, and heavy industry.

Which one scores higher?

Gorman-Rupp earns a perfect score in my screener (10 out of 10), Trelleborg passes 9 of the 10 criteria.

Are these two stocks expensive?

They trade at similar, reasonable levels: roughly 25 times free cash flow for Gorman-Rupp, 26 times for Trelleborg.

Why is there no earnings date for Trelleborg in this article?

My data didn't return a reliable earnings date for this Swedish stock at the time of writing. I'd recommend checking directly with a Swedish financial source.

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About the author

Written by Lubin Danilo, founder of Lubin Investment. A self-taught individual investor, I find fundamental analysis fascinating, and it has delivered excellent results. For three years now, my performance has beaten the S&P 500. But analyzing every stock took too much time: sites with incomplete data, calculation methods and criteria never aligned with mine. And spotting the best stocks was just as time-consuming, even with my own well-defined checklist. So I put my software development background to work to build this software, base my investment strategy on its results, and share it with people who share the same passion as me. It judges a company's quality and its price separately, using criteria drawn from the financial literature (Warren Buffett, Michael Mauboussin, Aswath Damodaran).