Silicone Rubber
Silicone Rubber
PROPERTIES : Silicone elastomers (Q, polysiloxanes) are a class of heat stable inorganic polymers with a polymer backbone made up entirely of silicon-oxygen bonds with two substituents attached to each silicon atom. The pendent groups are typically methyl groups. They are often lightly cross-linked to improve the mechanical properties.
Silicones are known for their high temperature and oxidative stability, excellent low temperature flexibility, and high resistance to ozone, sunlight (UV) and many chemicals. However, they are not resistant to super-heated steam, and their mechanical properties are generally low but are usually retained at higher temperatures. They also have poor gas permeability and low resistance to mineral oils and hydrocarbon solvents.
APPLICATIONS : Silicone rubbers (Q) are available in liquid and solid form. They are typically more expensive than most other elastomers and are, therefore, only used when excellent resistance to chemicals, oxygen, weathering and/or flexibility at (very) low temperatures is required. They are also used when food/bio-compatibility is required.
Silicones are widely used in the pharmaceutical, medical, electrical, automotive and aerospace industry. Major applications include surgical implants, wound dressings, mold making, wire and electrical insulations, gaskets, seals, and tubings.
The typical working temperature range is -70°C to +250°C. However, some grades can withstand temperatures up to 500°C (for a short time).
We offer various Grades and Hardness of Silicone Rubber. Some of the major Brands available with us are:
- > Howren
- > Wynca-China
- > Wacker Silicon