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Need to eliminate reversion in thick natural rubber parts and improve steel cord adhesion? First® TBSI‑75 replaces TBBS+PVI with a single accelerator. No reversion, water‑stable, and significantly boosts heat‑aged adhesion to brass‑plated steel. Ideal for heavy truck tires, earthmover treads, and conveyor belts.

Need a drop‑in replacement for NOBS without nitrosamine risk? First® TBBS‑80 is the “standard accelerator.” No nitrosamines, same scorch safety and fast cure. Ideal for high‑alkalinity carbon black compounds. REACH compliant.

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