Chemraz is a brand name for a group of perfluoroelastomer (FFKM) compounds that offer high temperature and chemical resistance. Chemraz was developed by the company Greene, Tweed & Co. in the late 1980s as a solution for sealing applications in harsh environments. Chemraz is used in a wide range of industries, including chemical processing, oil and gas, semiconductor manufacturing, aerospace, and pharmaceuticals.

Chemraz is a type of perfluoroelastomer, which means it is made up of fluorinated hydrocarbons that have a high degree of chemical resistance. These compounds are highly fluorinated and are designed to provide exceptional resistance to heat, chemicals, and other harsh conditions. Chemraz is known for its excellent resistance to aggressive chemicals, such as acids, bases, and solvents. It also has a high temperature resistance, withstanding temperatures up to 327°C (621°F).

Chemraz is used in a variety of sealing applications where other materials fail due to the extreme conditions they are exposed to. For example, it is used in chemical processing equipment, where it seals valves, pumps, and reactors. It is also used in the oil and gas industry, where it seals drilling equipment, pipelines, and offshore rigs. Chemraz is used in the semiconductor industry to seal components in high-temperature environments and in the aerospace industry to seal components in extreme conditions.

Chemraz is available in a variety of formulations, each designed to meet specific application requirements. The most commonly used Chemraz compounds are the Chemraz 505, Chemraz 526, and Chemraz 555. The Chemraz 505 is designed for general-purpose sealing applications and offers excellent chemical and temperature resistance. The Chemraz 526 is designed for high-temperature applications, while the Chemraz 555 is designed for applications that require both chemical and temperature resistance.

One of the key benefits of Chemraz is its durability. Chemraz compounds have a long service life, even in harsh conditions. This means that equipment does not need to be shut down as frequently for maintenance, reducing downtime and increasing productivity. Chemraz is also highly resistant to compression set, which means that it maintains its shape even after being compressed for long periods.

Chemraz is also known for its excellent sealing properties. It has a low compression set, which means that it can be compressed and then return to its original shape when the pressure is released. This makes it an ideal material for sealing applications, where a tight seal is critical. Chemraz also has a low gas permeability, which means that it does not allow gases to pass through it easily. This makes it an ideal material for sealing applications where the containment of gases or fluids is important.