本规范涵盖片状、条状、管状、挤压和模制形状的硅橡胶（VMQ）。主要用于在-55至+230摄氏度（-67至+446华氏度）的温度范围内运行或密封所需的零件，尤其适用于飞机活塞发动机耐油性、低压缩永久变形和可控介电强度。硅酮弹性体能够抵抗风化和高苯胺点石油基础油的劣化，并且在规定的温度范围内保持柔性。由于弹性体过度膨胀，弹性体通常不适合与汽油或芳香族燃料以及低苯胺点石油基液体接触。

This specification covers a silicone (VMQ) rubber in the form of sheet, strip, tubing, extrusions and molded shapes. Primarily for parts required to operate or seal from -55 to +230 degrees C (-67 to +446 degrees F), compounded especially for aircraft piston engine oil resistance, low compression set, and controlled dielectric strength. Silicone elastomer is resistant to deterioration by weathering and by high-aniline-point petroleum-base oils and remains flexible over the temperature range noted. The elastomer is not normally suitable for use in contact with gasoline or aromatic fuels and low-aniline-point petroleum-base fluids due to excessive swelling of the elastomer.