Why are silicone rubbers resistant to heat and oxidation?

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Silicone rubbers are highly resistant to heat and oxidation primarily due to the unique chemical structure of their molecular backbone. Unlike most industrial polymers that rely on carbon-based backbones, silicone rubbers consist of alternating atoms of silicon and oxygen.12

The Si–O bond is inherently heat-resistant and is not readily attacked by oxygen or ozone. This stability allows silicone-based elastomers to maintain their properties across a wide temperature range, making them exceptionally durable in environments where other materials might degrade.12