Phenyl vinyl rubber, especially methyl phenyl vinyl silicone rubber (also known as phenyl silicone rubber), has outstanding performance under extreme conditions, but there is limited information about its lubricating properties as a lubricating material. However, we can indirectly infer its potential lubricating properties under extreme conditions from the extreme temperature resistance and chemical resistance of phenyl vinyl rubber.

1. Extreme temperature resistance
Low temperature performance: Phenyl silicone rubber destroys the regularity of the siloxane molecular structure and reduces the crystallization temperature of the polymer by introducing phenyl groups, thereby improving cold resistance. Low phenyl silicone rubber (phenyl content 5%10%) can still maintain the elasticity of rubber at -70℃-100℃ and has unique cold resistance. This allows phenyl vinyl rubber to maintain good flexibility and mechanical properties under low temperature conditions, which is helpful for its application in certain low temperature lubrication occasions.
High temperature performance: Phenyl silicone rubber has excellent heat resistance and a wide operating temperature range, which can be extended to -70℃350℃, and the short-term working temperature can reach -110℃400℃. This high temperature stability allows phenyl vinyl rubber to remain stable in high temperature environments, not easy to decompose or deteriorate, and thus may maintain certain lubrication properties.

2. Chemical resistance
Solvent and oil resistance: Phenyl silicone rubber has good stability to aliphatic, aromatic and chlorinated hydrocarbon solvents, various petroleum-based fuel oils, lubricating oils, hydraulic oils and certain synthetic oils (such as diester lubricating oils, silicate hydraulic oils) at room temperature and high temperature. This chemical resistance makes phenyl vinyl rubber less likely to swell, soften or harden when exposed to these chemicals, thus possibly maintaining the stability of its lubrication properties.

3. Inference of lubrication properties
Although phenyl vinyl rubber itself is not a special lubricating material, its stability and chemical resistance under extreme conditions indicate that it may play a role in some special lubrication occasions. For example, in low or high temperature environments, traditional lubricating materials may fail, while phenyl vinyl rubber may be used as an auxiliary lubricating material or additive due to its excellent temperature resistance to provide additional lubrication effects. In addition, its chemical resistance also means that it may maintain certain lubrication properties when exposed to corrosive chemicals.

However, it should be noted that the lubrication performance of phenyl vinyl rubber may be affected by many factors such as its molecular structure, processing method, type and content of additives. Therefore, in specific applications, it is necessary to conduct tests and evaluations based on actual conditions to determine whether it is suitable for use as a lubricating material or additive.

In summary, although there is limited information on the direct lubrication performance of phenyl vinyl rubber under extreme conditions, it can be inferred from its extreme temperature resistance and chemical resistance that it may play a role in some special lubrication occasions. In specific applications, sufficient tests and evaluations are required.