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Light weight and specialty fillers

Osthoff Omega Group is a German company, specialized in light weight and specialty fillers and represented by us in the Benelux.

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For more information or ordering a sample, please contact us.

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Hollow ceramic spheres (Omega Spheres®)

We offer a complete range of hollow ceramic spheres among which we sell Omega Spheres® (cenospheres in grey and off-white). 

Omega-Spheres® are high-quality ceramic hollow microspheres, serving as functional lightweight fillers. They are available in various grain fractions.

Omega-Spheres® are characterized by very high thermal and mechanical stability.

Features and benefits of Omega-Spheres are:

  • reduced density / reduced weight of final products
  • non-combustible
  • chemically inert
  • temperature resistant up to 1200°C
  • excellent acoustic- and thermal insulation
  • improved flow- and working properties
  • improved mechanical properties including impact strength and dimensional stability
  • improved thermal-shock resistance
  • no water absorption under pressure

 

Hollow ceramic spheres (Thermospheres®)

Other hollow ceramic spheres we provide are ThermoSpheres® (cenospheres in grey and off-white). 

ThermoSpheres® are high-quality ceramic hollow microspheres characterized by a high
degree of fineness and highest mechanical resistance. Due to the fine particle size, ThermoSpheres® are predestined for use in coatings as insulating lightweight filler.

Features and benefits are:

  • excellent acoustic- and thermal insulation
  • reduced density / reduced weight of final products
  • improved flow- and working properties
  • improved mechanical properties including impact strength and dimensional stability
  • improved thermal-shock resistance
  • no water absorption under pressure
  • non-combustible
  • chemically inert
  • temperature resistant up to 1200-1600°C

Glass bubbles (Omega Bubbles)

In the category Glass Bubbles we offer you Omega Bubbles, which are made from recycled glass.

Omega-Bubbles are high-quality multi-cellular hollow glass spheres, serving as functional lightweight fillers. Omega-Bubbles are characterized by excellent chemical, mechanical, and thermal properties. The multi cellular high-stability structure is generated in a unique process. The use of high-quality raw materials ensures the pure white colour of Omega-Bubbles.

Features and benefits are:

  • non-combustible
  • excellent thermal insulation properties due to low thermal conductivity
  • temperature stability up to 900°C
  • highest hydrolytic stability
  • excellent acoustic absorption
  • low electric conductivity
  • coarse texturing for excellent adhesion
  • environmental-friendly manufacturing process
  • 100% recyclable
  • reduced density / reduced weight of final products
  • improved flow- and working properties

Wollastonite

Wollastonite is a rod shaped calcium metasilicate named after the physicist Wollaston. It's a natural occurring white acicular mineral. It is inert, has low loss on ignition, no water solubility and a low efficient of linear thermal expansion.

Wollastonite is available in aspect-ratio of 3:2 to 20:1, from 8 μm to 1000 μm. It’s also available modified with various coatings as per customer needs and are sold as Fillex.

The product is fire resistant and extremely alkali-resistant.

Features and benefits of Wollastonite are:

  • (micro-)reinforced properties
  • resistant to high temperatures
  • improvement of adhesive strength
  • anticorrosive agent due to alkaline potential
  • odourless
  • 100% mineral origin
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