In the field of silicone rubber, VMQ and PVMQ are different types of silicone rubber materials, which have some different characteristics and applications. Here are their explanations:

VMQ: VMQ is the abbreviation for Vinyl Metal Silicone, also known as conventional silicone rubber. It is a silicone rubber based on a polysiloxane (siloxane) structure, typically possessing excellent high-temperature resistance, electrical insulation, oxidation resistance, and weather resistance. VMQ rubber has good elasticity and softness in high-temperature environments, so it is commonly used in high-temperature applications such as manufacturing seals, insulation pads, and insulation layers for wires and cables.

PVMQ: PVMQ is the abbreviation for Phenol Vinyl Metal Silicone, also known as phenyl silicone rubber. This type of silicone rubber introduces phenyl (benzene ring structure) into its molecular structure, giving the material higher chemical and oil resistance. PVMQ rubber typically has high temperature resistance similar to VMQ, as well as better oil, solvent, and chemical resistance, making it suitable for applications that require both high temperature and chemical corrosion resistance, such as automotive engine seals and chemical equipment seals.

In summary, VMQ and PVMQ are different variants of silicone rubber, which differ in high-temperature performance, chemical resistance, and application fields. The choice of material to use depends on the specific application needs and requirements.

Regarding silicone rubber, please check the details:
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