Hydrogenated nitrile butadiene rubber market: what HNBR is, who produces it, how much capacity there is and figures

Hydrogenated nitrile butadiene rubber (HNBR) is nitrile butadiene rubber (NBR) that has gone through hydrogenation. It is a synthetic rubber that ARLANXEO sells under the Therban® brand and describes as resilient to extreme temperatures, chemicals and abrasion. No source cited here publishes a size for the HNBR market, and the closest official price signal is the producer price index for U.S. synthetic rubber manufacturing, which stood at 303.910 in September 2026 (index, June 1981 = 100), according to the Bureau of Labor Statistics series on FRED³.

Data sources

Key points

• HNBR is the hydrogenated version of NBR. ARLANXEO says its Therban® grades resist extreme temperatures, chemicals and abrasion.
• ARLANXEO makes HNBR in Orange (USA), Leverkusen (Germany) and Changzhou (China). Among the sources cited here, it is the only producer that publishes plant-level capacity.
• ARLANXEO inaugurated the Changzhou plant on February 4, 2026, with a design capacity of 5,000 tons per year. Its first phase, 2,500 tons, was commissioned in October 2025.
• The U.S. producer price index for synthetic rubber manufacturing was 303.910 in September 2026. That is 4.88% below May and 0.72% above August.
• No public source cited here gives a dollar total, a growth rate or company shares for HNBR.

What HNBR is and how it differs from NBR

The name carries most of the definition. Nitrile butadiene rubber is a synthetic rubber, and the "H" in HNBR stands for the hydrogenation step that turns it into a different material with its own trade names and its own plants. Both are polymers, and the general idea of what that word means is covered in Polymers: what they are, types, examples and figures.

ARLANXEO, which markets HNBR as Therban®, describes the material as "renowned for its resilience to extreme temperatures, chemicals, and abrasion"². That is a producer's own wording, not a lab result. The sources cited here carry no datasheet that puts HNBR and NBR temperature ratings side by side.

So what does a buyer gain by specifying HNBR over NBR?

The public documents answer only in qualitative terms. They give no data on whether a part specified in HNBR can be swapped for an NBR part; that depends on each part's specification and datasheet. A seal like the ones in the photo above is chosen against a drawing and a test sheet, and none of those sit in a press release.

Who produces HNBR and where

ARLANXEO is the only HNBR producer among the sources cited here, and it publishes plant-level capacity figures. The company describes itself as one of the world's largest synthetic rubber producers and as a wholly owned subsidiary of Aramco¹. Its HNBR production network, in its own words, spans the Americas, Europe and Asia.

Only the Chinese plant comes with a number. The releases say nothing about tonnage in Orange or Leverkusen, so the company's total HNBR capacity can't be added up from public data. And since the public documents name only these plants for this producer, where the material is made is part of what a buyer checks.

Other HNBR producers fall outside the sources cited here, and this page doesn't name companies or volumes it can't document.

The Changzhou plant, date by date

ARLANXEO announced the Chinese plant twice, at the groundbreaking and at the opening, so its timeline can be set out date by date. The company had been in China for almost a decade by then (long enough to have a staff of around 400 employees there)¹.

The first phase is 50% of the plant's design capacity. Neither release gives a date for the remaining tonnage, which is the open question for anyone tracking how much HNBR Changzhou can actually ship.

The opening release adds a few construction facts. ARLANXEO says start-up was completed within 13 months and that the project logged over 1.1 million safe man-hours without lost-time incidents¹. It also says a thermal oxidation system cuts carbon emissions in key process steps by around 80% compared with conventional finishing processes, a figure the company gives without a baseline in tons.

A company profile that changed between releases

The two releases don't describe ARLANXEO in the same way. In April 2024 the company said it had more than 11 production sites in 8 countries and 5 innovation centers². In February 2026 the boilerplate read more than 10 production sites in eight countries and four innovation centers¹.

Neither release explains the change. Both counts refer to the whole company, not just to HNBR.

What HNBR is used for

The opening release lists where the Changzhou output goes. ARLANXEO names automotive components, oil and gas systems, industrial equipment, aerospace and next-generation battery technologies¹.

No public source cited here puts a percentage on any of these segments. What the company does say is that the same plant serves all of these sectors; it doesn't say in what form the material reaches each one. Whether battery makers already buy meaningful tonnage or are still a line in a press release is something the documents leave open.

Prices: the official series closest to HNBR

None of the sources cited here publishes a price for HNBR as such. The nearest official series is the Bureau of Labor Statistics producer price index for synthetic rubber manufacturing, published on FRED as series PCU325212325212³. It is a monthly index, not seasonally adjusted, with June 1981 = 100, and it runs from January 1965 to September 2026 (741 observations).

From May to September 2026 the index fell 4.88%. From August to September it rose 0.72%, the first monthly gain in the stretch shown. The series covers U.S. synthetic rubber manufacturing as a whole industry, so an HNBR contract can move differently from the index and the data can't tell you by how much.

What the PPI measures

The BLS defines the PPI as a measure of "the average change over time in the selling prices received by domestic producers for their output"⁴. For many products, the prices come from the first commercial transaction. That makes it a seller's price at the plant gate end of the chain, which is a different thing from a quote a compounder gets from a distributor.

Two rules shape how to read the latest point. BLS data are subject to revision up to 4 months after they are first published, so the September 2026 value of 303.910 isn't final. The October 2026 PPI is scheduled for November 13, 2026, at 8:30 a.m. Eastern Time, and FRED lists the same date for the next update of the synthetic rubber series³.

The wider price backdrop

The headline U.S. figures moved fast in September 2026. The BLS reports that the PPI for final demand increased 1.3% in September and 6.3% over the 12 months ended in September, while prices for final demand goods rose 2.6% in the month⁴. Industrial chemicals, a closer neighbor to synthetic rubber, rose 0.9% in September.

Outside the United States, the World Bank's October 2026 Commodity Markets Outlook says commodity prices are set to rise 23% in 2026, and its energy price index surged 25.7% in September⁵. The BLS and World Bank pages don't establish any link between those energy figures and the synthetic rubber index.

For how raw material prices pass through supply chains in general, see Raw materials: what they are, types, examples and how their prices move.

Terms that get confused

• HNBR and NBR. HNBR is NBR after hydrogenation. The two are separate materials with separate trade names, and the sources cited here give no side-by-side property data.
• Therban® and HNBR. Therban® is ARLANXEO's brand for HNBR. HNBR is the generic name of the material.
• Nameplate capacity, design capacity and first-phase production. The 2024 release spoke of a nameplate capacity of 5,000 tons a year; the 2026 release calls the same figure design capacity. The 2,500 tons commissioned in October 2025 are the first phase, not the full plant.
• Producer price and purchase price. The PPI tracks what domestic producers receive at the first commercial transaction. A buyer's invoice can carry other costs on top of that.
• Synthetic rubber index and HNBR price. Series PCU325212325212 covers all U.S. synthetic rubber manufacturing. It is a reference point, not an HNBR quote.

What the public record leaves out

No public source cited here gives a dollar total for the HNBR trade, a growth rate or segment shares, so this page carries none of them. Figures like those circulate in paid industry reports, and the questions to ask of them are covered in How to Read Industry Reports Without Getting Manipulated.

What can be checked is short. There is a producer network with sites on three continents, a Chinese plant with 5,000 tons a year of design capacity and 2,500 tons commissioned, and an official U.S. index for synthetic rubber that read 303.910 in September 2026. That index value stays open to revision until four months after publication.

Frequently asked questions

What is the difference between HNBR and NBR?

HNBR is nitrile butadiene rubber that has been hydrogenated. ARLANXEO, which sells it as Therban®, describes it as resilient to extreme temperatures, chemicals and abrasion. The public sources cited here give no side-by-side ratings for the two materials, so the exact gap for a given part has to come from its datasheet.

How much HNBR capacity is there?

No public source cited here gives a world total. ARLANXEO says its Changzhou, China, plant has a design capacity of 5,000 tons per year. Its first phase, with production of 2,500 tons, was commissioned in October 2025, and ARLANXEO inaugurated the plant on February 4, 2026. The company publishes no tonnage for Orange or Leverkusen.

Is there an official price for HNBR?

Not in the sources cited here. The closest official series is the BLS producer price index for U.S. synthetic rubber manufacturing (FRED series PCU325212325212), which was 303.910 in September 2026, down 4.88% from May and up 0.72% from August. It covers all synthetic rubber, not HNBR alone.

When is the next price update?

The BLS has scheduled the October 2026 producer price index for November 13, 2026, at 8:30 a.m. Eastern Time. FRED lists the same date for the synthetic rubber series. BLS figures can be revised for up to 4 months after first publication, so the September value may still change.

Sources

1. ARLANXEO, "ARLANXEO inaugurates new Therban® HNBR plant in China" (2026). Inauguration date, design capacity, first phase, applications, production network, emissions, construction and company profile. arlanxeo.com. Accessed Oct 30, 2026.
2. ARLANXEO, "ARLANXEO celebrates groundbreaking of new Therban® HNBR plant in China" (2024). Groundbreaking date, nameplate capacity, expected start of operations, Therban® properties and company profile. arlanxeo.com. Accessed Oct 30, 2026.
3. Federal Reserve Bank of St. Louis, FRED, "Producer Price Index by Industry: Synthetic Rubber Manufacturing (PCU325212325212)" (data through September 2026). Monthly index values, units, coverage and next release date. fred.stlouisfed.org. Accessed Oct 30, 2026.
4. U.S. Bureau of Labor Statistics, "Producer Price Index Home" (September 2026 release). PPI definition, final demand and industrial chemicals changes, revision policy and release schedule. bls.gov. Accessed Oct 30, 2026.
5. World Bank, "Commodity Markets" (Commodity Markets Outlook, October 2026). Expected commodity price increase in 2026 and September energy price index change. worldbank.org. Accessed Oct 30, 2026.

Photo: Qingshansealing (CC BY-SA 4.0, Wikimedia Commons).

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