Silicone foam rubber has the combined properties of resilience, high temperature stability and general inertness unavailable in any other foam gasketing and cushioning material. These materials are generally unaffected by extended exposure to temperature extremes from -67°F (-55°C) to 392°F (200°C), and are also unaffected by aging and degradation from sunlight and ozone, making it an excellent silicone foam gasket material.
We see silicon foam or silicon rubber called out frequently. Although silicon is often called out on prints, silicone is the widely accepted terminology used among the rubber industry.