High-Purity Rubber Grade Sulfur Powder for Industrial Vulcanization

High-Performance Insoluble Sulfur for Rubber Vulcanization

SFT Rubber’s Insoluble Sulfur is a premium, thermally stable vulcanizing agent specifically engineered to solve migration issues in the tire and rubber industry. As a leading Insoluble Sulfur manufacturer, we provide products that remain insoluble during processing, effectively preventing sulfur bloom and ensuring superior dispersion for high-end manufacturing.

Key Features & Advantages

• Eliminates Sulfur Bloom: Our Thermal Stable Insoluble Sulfur remains in a polymeric state during storage and mixing, preventing surface crystallization (blooming) and maintaining perfect compound homogeneity.

• Superior Steel Cord Adhesion: Specifically designed for radial tire manufacturing, it significantly enhances the bonding strength between rubber and steel cords, reducing the risk of separation.

• Improved Processing Safety: By preventing premature sulfur activation during extrusion and calendering, our rubber vulcanizing agent reduces scrap rates and improves manufacturing efficiency.

• Excellent Thermal Stability: Maintains its insoluble structure even at high mixing temperatures, only activating during the final vulcanization stage for precise cure control.

• Optimal Dispersion: Fine particle size distribution ensures uniform cross-linking, leading to consistent physical properties in the finished rubber product.

Common Applications

• Steel-Belted Radial Tires: Essential for carcass and belt compounds where adhesion is critical.

• Rubber-to-Metal Bonding: High-performance gaskets, seals, and engine mounts.

• Conveyor Belting: For heavy-duty industrial belts requiring uniform heat resistance.

• Automotive Components: Durable rubber bushings, hoses, and suspension parts.

Common Applications

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