ELASTOSIL® RT 628 A/B is a flowable, addition-curing, 2-part silicone rubber for potting, encapsulation and casting applications. The product vulcanizes at room temperature or under heat to yield a permanently flexible silicone rubber with very good mechanical properties.

Cured ELASTOSIL® RT 628 A/B shows long-term stability against weathering, moisture and UV radiation. The silicone elastomer may continuously be exposed to constantly changing climatic conditions, UV radiation and temperatures as high as 180 °C (356 °F) without damage.

Uncured:

• 9 : 1 mixing ratio
• High extrusion rate
• Self-levelling
• Rapid heat cure possible

Cured:

• Medium hardness
• High tear resistance
• Recommended service temperature range: -50 °C to +180 °C