This specification covers a silicone rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for rubber-like parts required to operate or seal from -80 to +120 degrees C (-112 to +248 degrees F), compounded especially for operation at extreme low temperatures. Silicone rubber is resistant to deterioration by weathering and by high-aniline-point petroleum-base oils and remains flexible over the temperature range noted. This material is not normally suitable for use in contact with low-aniline point petroleum-base fluids, including fuels, due to excessive swelling.