Rubber Industry
Natural micronized calcium carbonate (CaCO₃) as a functional filler for the rubber industry — automotive seals, hoses, technical rubber, shoe soles and profile compounds. 3 grades AY 215, AY 320 and AY 540.
Calcium Carbonate in the Rubber Industry
Natural micronized calcium carbonate (CaCO₃) is one of the most widely used functional fillers in the rubber industry. In rubber compound formulations it reinforces mechanical properties, improves processability and optimizes compound cost — making it a core ingredient in technical, automotive and footwear rubber production across Europe.
At Aydın Madencilik, we manufacture natural micronized calcium carbonate from high-purity calcite stone extracted at our own licensed quarry sites in Bursa Gemlik, Turkey. Our rubber-grade products are supplied to compounders manufacturing automotive seals and gaskets, hoses, technical rubber goods, shoe soles, rubber profiles and a broad range of EPDM, NBR, SBR and SBR-blend compounds for the European rubber industry.
Rubber Compound Production
In general-purpose rubber compound formulations, calcium carbonate is used as a volume-extending functional filler that influences the hardness, tear strength and abrasion resistance of the finished rubber product. Our AY 215 (15 µm) and AY 320 (20 µm) natural grades are preferred for general-purpose EPDM, NBR and SBR rubber compounding, delivering a balanced cost-to-performance ratio for European rubber compounders.
Automotive Seals, Hoses and Technical Rubber
For automotive sealing systems, hoses and technical rubber components, calcium carbonate reinforces mechanical performance while delivering a clear cost advantage. Our AY 320 (20 µm) grade is widely used in automotive rubber applications — door seals, window weatherstrips, radiator and coolant hoses, engine mounts and OEM-grade technical rubber parts — supplied to Tier 1 and Tier 2 automotive rubber compounders across Germany, Italy, France and Eastern Europe.
Shoe Soles and Rubber Profile Production
For shoe sole and rubber profile production, coarse-micron calcium carbonate enables high filler loadings and significant cost optimization. Our AY 540 (40 µm) natural grade is the preferred volume filler in shoe sole compounding and rubber profile / gasket production — widely used in the European footwear industry (notably Italy) and in industrial sealing profiles.
Why Choose Aydın Madencilik for Rubber-Grade Calcium Carbonate?
High-purity calcite stone extracted from our own licensed quarry sites is micronized at our Bursa Gemlik facility using German Hosokawa Alpine technology — delivering rubber-grade calcium carbonate with the particle size and chemical purity required by demanding compounders. Operating from a 15,000 m² production facility since 1999, we provide technical support, sample services and consistent batch-to-batch quality for European rubber manufacturers. Proximity to Gemlik Port enables direct maritime shipments to rubber compounders in Germany, Italy, France, Spain, the Czech Republic, Poland, the Netherlands and the United Kingdom.
Calcium Carbonate Rubber Industry Advantages in the Industry
Mechanical Property Support
Calcium carbonate reinforces hardness, tear strength and abrasion resistance in EPDM, NBR and SBR rubber formulations — improving the performance of the finished compound.
Compound Cost Optimisation
High-loading coarse-micron calcite grades enable significant reductions in rubber compound cost without compromising critical mechanical properties.
Calcite Raw Material Security
All raw material is extracted from our own licensed quarry sites — guaranteeing uninterrupted supply and consistent calcite chemistry batch after batch.
Consistent Batch-to-Batch Quality
Every production batch is laboratory-tested for particle size distribution, whiteness, moisture content and chemical composition — delivering repeatable results in critical rubber compounding.
European Logistics Advantage
Located in Bursa Gemlik with direct access to Gemlik Port, we deliver fast maritime shipments to European rubber compounders in Germany, Italy, France, Spain, the Czech Republic and Poland.
Rubber Industry Frequently Asked Questions
What is calcium carbonate used for in the rubber industry?
Calcium carbonate (CaCO₃) is used as a volume-extending functional filler in rubber compound formulations. It supports mechanical properties including hardness, tear strength and abrasion resistance, improves processability and optimises compound cost. Aydın Madencilik’s AY 215, AY 320 and AY 540 grades are designed for the rubber industry — from technical EPDM/NBR compounding to footwear and automotive rubber.
Which calcium carbonate is used in automotive rubber parts?
For automotive seals, hoses and technical rubber parts, mid-micron grades between 15 and 20 µm are typically preferred. Our AY 215 (15 µm) and AY 320 (20 µm) natural calcite grades deliver the right balance of mechanical reinforcement and compound cost in automotive rubber applications such as door seals, weatherstrips, radiator hoses, engine mounts and OEM-grade technical rubber components.
Is calcium carbonate used in shoe sole production?
Yes — coarse-micron calcium carbonate is widely used in shoe sole and rubber profile production. Our AY 540 (40 µm) grade enables high filler loadings in sole compounding, delivering significant cost optimisation while maintaining the mechanical performance required for footwear and industrial profile applications. It is widely used in European footwear hubs such as Italy.
What is your logistics advantage for calcium carbonate supply to European rubber compounders?
Our facility in Gemlik, Bursa, has direct access to Gemlik Port — enabling fast maritime shipments to European rubber compounders in Germany (automotive sealing and technical rubber), Italy (footwear), France (industrial rubber), Spain, the Czech Republic, Poland, the Netherlands and the United Kingdom. Container, big bag and bulk delivery options are available.
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