Sealing Solutions for Chemical Processing

The following literature provides a basic overview of a chemical processing application. View by turning the pages using the arrow on the right side (we recommend expanding to full-screen mode), double-click on a page to zoom in or out, or Download here.


The following 3D Interactive Video displays the general flow process of a Sulfuric Acid Plant. Instructions are below.


  • Click on the play button to start the video.
  • For best viewing while in “play” mode, we recommend expanding to full-screen mode. Do this by clicking on the bottom right icon.
  • Once the video begins, use the forward or rewind buttons that will appear at the bottom of the screen as you motion your mouse to that area.
  • When in the play mode, you can zoom in or out of the mechanical elements by using the scroll feature of your mouse, or simply use your mouse curser to click and drag the scene around to locate all the elements. Click on any of the Durlon products that appear in the pop-up windows to be directed to more information of that products features.
  • Click the escape button of your keyboard to return to the original screen mode.

The chemical industry is one of the most important economic sectors, and in general, can be divided into the following areas:

  • Basic chemicals
  • Fine chemicals
  • Specialty chemicals
  • Inorganic chemicals: Acids, Alkalis, Salt
  • Organic chemicals: Pharmaceutical, Biochemical, Bioengineering

Each of these areas have different requirements, therefore, specially developed sealing solutions are required. The seals are essential for reliability, as they ensure hazardous, aggressive and corrosive media is controlled securely, regardless of the process or operating conditions.

The basic chemicals segment produces both inorganic and organic chemicals. Organic chemicals are used in the production of other chemicals, such as dyes, plastics, and petrochemical products. Inorganic chemicals usually are used to make solid and liquid chemicals, and industrial gases; sodium, sulfuric acid, and chlorine are some of the most common.

Products in the fine chemical industry are manufactured in discontinuous processes. Successive production steps, such as mixing, reacting and separating are typical here. 
The batches are often relatively small and the processes are demanding. Flexible, multi-purpose systems, usually equipped with agitators, reactors, filters, dryers and other special equipment, are predominantly applied. These different manufacturing processes often results in crystallizing, paste-like, highly viscous or highly corrosive media under changing pressure and temperature conditions.

Specialty chemicals include individual molecules or mixtures of molecules (i.e., formulations) that are manufactured on the basis of a unique performance or function. Many other sectors rely on specialty chemicals for their products, including automotive, aerospace, agriculture, and cosmetics and food, among others.

In manufacturing and processing, particularly extreme parameters will occur during the handling of inorganic basic chemicals. In addition to aggressive, sometimes toxic media, high pressures prevail. Furthermore, the seals used here must have a wide temperature range. Accordingly, high-quality, robust and chemically resistant materials are in demand. In order to meet the high standards of the statutory emission values in processes, the seal must make a decisive contribution.

Whether you are dealing with agrochemicals, basic chemicals, specialty chemicals, consumer products, or pharmaceuticals, Durlon® has the products, materials, and expertise you need in your industrial applications. When dealing with fine and specialty chemicals, gaskets that can withstand high temperature and chemical resistance are required. In addition to the use of aggressive and sometimes toxic media, temperatures from +300°C down to a cryogenic range are not uncommon. The material of the finished seal must be able to stand up to these varied conditions.

By combining innovative products with unparalleled service, Durlon® recognizes the potential hazards and critical need for personal safety in chemical processing industries, while also considering the importance of regulatory compliance, reduced downtime, ease of maintenance, integrity, and emission reduction. We invest a great deal in research and development to consistently improve the performance of our sealing products. In addition to outstanding chemical resistance to various aggressive media, our gasket materials must resist high and low-temperature extremes and possess robust mechanical strength.

Many of our gaskets are certified for API 6FB and API 607, 6th edition Fire Tests, BAM, FDA Compliant, ABS-PDA Certified, USP Class VI Certified RoHS Reach Declaration, and TA-Luft (VDI 2440).

Below is a list of Durlon® gasket recomendations for the Chemical Industry: