Silicone O-rings
Silicones have good ozone and weather resistance as well as good insulating and physiologically neutral properties. However, silicone elastomers as a group, have relatively low tensile strength, poor tear strength and little wear resistance.
Heat resistance
• Up to approximately 204°C (400°F) special compounds up to 260°C (500°F)
Cold flexibility
• Down to approximately -54°C (-65°F) special compounds down to -115°C (-175°F)