Spherix® Mineral Products

About Spherix® MIneral Products

Spherix® Mineral Products (SMP) are 100% post-industrial recycled mineral products that reduce processing time and product cost. Developed by SEFA’s R&D group, the products are 100% recycled aluminosilicate ceramic microspheres, developed as sustainable, inorganic process aids for organic rubber, plastic, and silicone rubber. These products are uniquely designed to provide greater efficiency and flexibility for specific rubber and plastic applications. The aluminosilicate ceramic solid microspheres have a density of 2.3 and Mohs hardness of 5-6. Particle size distributions can be unimodal or multimodal.

The mechanical effect of Spherix® Mineral Products provides enhanced physicals, increased surface smoothness, improvement in consistency, greater process control and repeatability, and greater calendering, molding, extrusion throughput.


100% recycled Aluminosilicate Ceramic (ASC) Microspheres reduce mixing time and energy consumption…

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Organic elastomers serve as multifunctional process aids for enhanced properties…

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Silicone elastomers that are optimized for HCR silicone cure chemistry…

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Green Innovation

Sustainability With Consistent Performance

At Spherix® Mineral Products, we manufacture Aluminosilicate Ceramic Spheres that have been developed from 100% recycled fly ash. The products are custom engineered with specific treatments bonded to the surface for customers seeking sustainable alternatives to improve processing time.

Market Sectors

Spherix® Mineral Products have been engineered to deliver a unique combination of benefits: mechanical benefits + polymer chemistry + cure chemistry.

  • Lower total energy of mixing
  • Enhanced flow under shear
  • Crosslinking of polymer
  • Enhanced physical properties
  • Lower drop temperature
  • Reduced mold fouling
  • Shorter molding cycle time
  • Better surface smoothness