Silicone rubber O-rings are seals made from silicone rubber, also known as silicone O-rings or silicone waterproof seals. They are classified as special rubber products and are often compared to fluorocarbon rubber. Silicone rubber is based on silicon as its primary material, and different side chain structures give it various properties. It is widely used in waterproofing, corrosion resistance, and gas sealing applications.

This product features excellent high-temperature resistance, oxidation resistance, ozone resistance, and low-temperature elasticity, as well as high breathability and selective gas permeability. Silicone rubber rings have good electrical insulation properties and can have their conductivity adjusted through additives, but they have weak wear resistance and are typically not suitable for dynamic sealing. Common types include O-rings, rectangular rings, and D-rings, available in various colours and hardness levels ranging from Shore A 25 to 90 degrees. They are widely used in appliance sealing (e.g., pressure cooker rings), industrial equipment, and static sealing in special environments.