IOTA 253 features unique T-type phenyl siloxane structure with two graded vinyl contents to adjust crosslink density, balancing hardness, flexibility and light transmittance of finished products. Phenyl backbone delivers superior thermal stability and radiation resistance, resisting yellowing under long-term high temperature, ideal for LED optical encapsulation and premium heat-resistant phenyl silicone resin.
Perfect miscibility with all phenyl silicone materials ensures uniform mixing, smooth processability and fewer defects like bubbles and haze. Standard drum packaging fits large-scale industrial manufacturing. As core crosslinking base for phenyl silicone rubber and resin, it serves as cost-effective domestic alternative to imported counterparts.