Neuburg Siliceous Earth

Sillitin®; Aktisil®; Silfit®; Aktifit®

Product Type:

Functional Minerals


Adhesives & Sealants, Coatings, Composites, Personal Care & Pharmaceuticals, Plastics & Thermoplastics, Polishing, Rubber

We are the UK and Eire distributor for Neuburg Siliceous Earth (NSE); a unique performance filler produced by Hoffmann Mineral GmbH. Neuburg Siliceous Earth is marketed under the trade names Sillitin and Sillikolloid; a natural agglomerate of corpuscular silica and lamellar kaolinite produced from mineral deposits formed 95 million years ago.


Key Properties:
  • Polymer Markets – Rapid incorporation, no filler agglomeration, excellent dispersion, semi-reinforcing filler, spacing effect, superb compression set.
  • Polishing – Excellent dispersion, adjustable abrasivity, good cut, low sedimentation, no scratching, chemical resistance.

Classic Neuburg Siliceous Earth combines lemelar kaolinite, with corpuscaler, cryptocrystalline and amorphous silica. This entirely unique structure, has been found to promote significant performance benefits in polishes for a wide range of surfaces. The loose structure and narrow particle size distribution, enables easy incorporating in water and O/W emulsions, whilst offering excellent compatibility with Aluminium Oxide.


Sillitin and its value added cousins Aktisil, Aktifit, find a home in many rubber applications, imparticular iwthin rollers and printer blankets. Suitable markets also include within automotive ( car body seals, trim, and under the hood applications turbo hoses) and construction (pipe seals, window beading).

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