What are the advantages of silicone in physical and chemical properties compared to PVC

What are the advantages of silicone in physical and chemical properties compared to PVC?
Elasticity and flexibility:
Silicone: Excellent elasticity, can quickly return to its original shape after stretching, not prone to permanent deformation after long-term use, good flexibility (especially room temperature vulcanized silicone).
PVC: Soft PVC relies on plasticizers to obtain flexibility. After long-term use, plasticizers are easy to migrate, causing the material to harden and crack; hard PVC lacks elasticity and is more brittle.
Wear resistance and aging resistance:
Silicone: Smooth surface, strong wear resistance, UV resistance, oxidation resistance, long-term exposure to air or sunlight is not easy to yellow, harden, and the service life can reach several years or even longer.
PVC: Easily affected by ultraviolet rays, fading, cracking, poor wear resistance, especially soft PVC is easy to wear and become sticky after long-term use.
Advantages of silicone: More stable physical properties, longer service life, especially suitable for high-frequency use or outdoor environments.
4. Chemical stability
Silicone:
Strong chemical resistance, good tolerance to common substances such as water, alcohol, neutral detergents, grease, etc., not easily dissolved or corroded.
PVC:
Weak chemical resistance, easily corroded by organic solvents (such as gasoline, alcohol), strong acids and alkalis, causing surface swelling, discoloration or cracking.
Silicone advantage: More reliable in scenarios where it is exposed to a variety of chemicals (such as laboratory equipment, industrial seals).