Steuler Claim

Acid-proof plastic

KERA® Duroplast

Stable and highly chemically resistant. KERA® Duroplast - durable, safe and PFAS-free.

What is KERA® Duroplast?

We can do that for you

We are an international provider of products and services in industrial corrosion protection. With our highly durable material KERA® Duroplast, we manufacture individual components for a wide variety of process systems according to customer requirements.

KERA® is a special Duroplast based on phenolic or furan resin, reinforced with mineral glass fibers and/or carbon fibers as well as special fillers.

KERA® is PFAS-free (per- and polyfluoroalkyl substances). PFAS are the main components of fluoropolymeres like PTFE, PFA, ECTFE, FEP oder PVDF.

The chemical resistance of KERA® products is comparable to PTFE, PFA, ECTFE, FEP, PVDF and other fluoroplastics. At high temperatures, however, KERA® products exhibit significantly higher strength and mechanical stability. Restrictions or even bans that apply or could apply in future to products containing PFAS are irrelevant for products made from KERA®.

KERA® is the ideal material for processes that require maximum chemical resistance at elevated temperatures. Whether hydrogen chloride gas is broken down into its chemical components in electrolysers, phosphoric acid is processed into white acid for the food industry, or tire cord and textile products made from viscose are spun in hot acid - KERA® convince with their outstanding properties.

The KERA®material offers consistent media and temperature resistance. It is not only suitable for simple storage containers, but is also ideal for use in absorbers, absorption towers and columns, including all installations such as different floor types or support grids.

Advantages Products & Applications Creation

Your contact
Manfred Dahlem
Manfred Dahlem
+49 2623 600-410
Wolfgang Schmidt
Wolfgang Schmidt
+49 2623 600-726

Why is KERA® better?

Advantages

  • Individual shapes
  • High strength
  • With or without fiberglass or carbon reinforcement
  • Excellent chemical resistance
  • Temperature resistance up to 140°C, 
    briefly up to a maximum of 170°C
  • Simple repairs possible on site
  • PFAS-free (not a “forever plastic”)
  • Long-lasting: up to 50 years
  • More cost effective than graphite and PTFE
  • Self-supporting: No substructure necessary
  • Asbestos free
  • Vacuum resistance

KERA® products & applications

Individually upon customer request

KERA® Duroplast can be used in a variety of ways thanks to its outstanding properties. In its original state, KERA® is a plastically formable mass that is manually kneaded, pressed or stamped into a variety of shapes.

Here you will find some application examples:

Absorption tower

Absorptionsturm Kera Duroplast Steuler Linings

Application: HCl absorber in the chemical industry
Product type: KERA® SP 30 / GFK

Support grid

Tragrost Kera Duroplast Steuler Linings

Application: Support grid for a column
Product type: KERA® SP 21

Vessels

Complete HCl absorber made from KERA SP 30/FRP

Application: Vessels for the chemical industry
Product type: KERA® SP 30 

Electrolysis frame

Distributor made from KERA SP 21

Application: Electrolysis frame for chlorine electrolysis
Product type: KERA® SP 30-SG

Electrolysers

Elektrolyseur Kera Duroplast Steuler Linings

Application: Electrolyser in HCl electrolysis
Product type: KERA® SP 30 (frame)

Bell bottoms

Glockenboden Kera Duroplast Steuler Linings

Application: Bell bottoms for the phosphoric acid industry
Product type: Base KERA® SP 20 Bells KERA® SP 21

Hump grates

Höckerroste Kera Duroplast Steuler Linings

Application: Hump grates in the chemical and steel industry
Product type: KERA® SP 20

Sleves

Hülsen Kera Duroplast Steuler Linings

Application: Sleve for the non-ferrous industry
Product type: KERA® SP 20

Box channel distributor

Kastenrinnenverteiler Kera Duroplast Steuler Linings

Application: Box channel distributor in the chemical industry
Product type: KERA® FU 23 

Rollers

Rollers made from KERA SP 20 used for cellulose processing

Application: Rollers for the food and viscose industry
Product type: KERA® SP 20

Tubes

Rohre Kera Duroplast Steuler Linings

Application: Tubes for the chemical industry
Product type: KERA® SP 20

Screen filters

Siebfilter Kera Duroplast Steuler Linings

Application: Screen filters
Product type: KERA® SP 30

Separator

Separator Kera Duroplast Steuler Linings

Application: Separator for the steel industry
Product type: KERA® SP 30

Spinning tubs

Spinnwanne in der Viskosefaserindustrie

Application: Spinning tubs in the viscose fibre industry
Product type: KERA® SP 20 

Thormann floors

Thormannboden Kera Duroplast Steuler Linings

Application: Thormann floors
Product type: Floor KERA® SP 20 / Hoods KERA® SP 21 

Spout distributor

Tüllenverteiler Kera Duroplast Steuler Linings

Application: Spout distributor for refineries
Product type: KERA® SP 20 

Distribution plate

Distributor plates from KERA SP 21 for a production plant for white phosphoric acid

Application: Distribution plate for the phosphoric acid industry
Product type: KERA® SP 21

Baths

Wannen Kera Duroplast Steuler Linings

Application: Felling and washing skids for the food industry
Product type: KERA® SP 20

Types of materials

  •     Resistant to non-oxidising acids and many solvents
  •     Very good for thermal and mechanical alternating stresses
  •     Phenolic or furane resin reinforced with glass and carbon fibers
  •     Very good antistatic properties
  •     Very good resistance to non-oxidising acids and many solvents
  •     Well suited for use with highly flammable substances
  •     Also proven with media containing hydrogen fluoride
  •     Carbon fibre reinforced phenolic resin
  •     Resistant to non-oxidising acids and many solvents
  •     Glass fibre reinforced phenolic resin
  • Resistant to non-oxidising acids and many solvents
  • Glass fibre reinforced phenolic resin
  • Filled with chopped glass for increased mechanical stability
  •    Very good resistance to non-oxidising acids and many solvents
  •     Also proven for alkaline stresses and hydrofluoric acid
  •     Very good antistatic properties
  •     Carbon fibre reinforced furan resin
  •     Resistant to non-oxidising acids and many solvents
  •     Very good for thermal and mechanical alternating stresses
  •     Phenolic or furane resin reinforced with glass and carbon fibers
  •     Very good antistatic properties
  •     Very good resistance to non-oxidising acids and many solvents
  •     Well suited for use with highly flammable substances
  •     Also proven with media containing hydrogen fluoride
  •     Carbon fibre reinforced phenolic resin
  •     Resistant to non-oxidising acids and many solvents
  •     Glass fibre reinforced phenolic resin
  • Resistant to non-oxidising acids and many solvents
  • Glass fibre reinforced phenolic resin
  • Filled with chopped glass for increased mechanical stability
  •    Very good resistance to non-oxidising acids and many solvents
  •     Also proven for alkaline stresses and hydrofluoric acid
  •     Very good antistatic properties
  •     Carbon fibre reinforced furan resin

Questions and answers

We answer the most frequently asked questions.

If you have any further questions, please contact us.


FAQ-area

The creation of KERA® Duroplast

Steuler continues the acid proof construction activities of the KCH

Aerial view of the STEULER-KCH Siershahn factory

The material KERA® Duroplast was developed by Keramchemie GmbH and was based on the well-known Bakelite material.

In 2010, the remaining acid mining activities of Keramchemie were taken over by the Steuler Group. Since then, this material has continued to be produced by Steuler Plastic Linings.

Plastic Linings

Learn more

Would you like to find out more about our products and services? Under KERA® Duroplast you will find more details about our unique material.

At Steuler Plastic Linings you can find information about the product and service portfolio.

Process equipment made of PTFE-M/FRP

Contact us

We look forward to your exciting enquiries.

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FAQ

What information does STEULER-KCH need to prepare a quotation?

In addition to the geometric dimensions, we need information on the medium or chemical composition, temperature and mechanical load to prepare a quotation.

Where are KERA® products manufactured?

KERA® products are manufactured exclusively by STEULER-KCH in Mogendorf.

Is it possible to repair or to modify KERA® products?

Yes, KERA® can be easily repaired with a specially designed repair kit and small modifications can be made on site.

What are the machining capabilities of KERA® products?

KERA® products can be easily machined using standard hand tools, but can also be machined using machine tools and suitable tools (tungsten carbide or high quality tool steel).

Are KERA® products free from PFAS?

KERA® products are thermosets that are free of perfluorinated and polyfluorinated alkyl compounds. They are not subject to any potential PFAS restrictions.

Can KERA® products be compared to other commercially available thermoplastics?

KERA® products were developed for the chemical industry and are comparable to high quality thermoplastics in terms of resistance. However, the stability and temperature resistance is much higher, so KERA® products often do not require additional lamination with carrier material.

Is it possible to customise the formulation of the KERA® product?

KERA® products can be adapted to specific requirements (chemical, mechanical, thermal). STEULER-KCH has chemical engineers, laboratories and experienced application technicians who can provide this service if required.

Does STEULER-KCH have its own in-house design and engineering department?

A team of well-trained engineers and statical experts in our own design department work out design and production documents.

In addition, STEULER-KCH offers special calculations such as Finite Element Analysis (FEA) as a service.