On the basis of their chemical composition FKMs can be divided into the following types: Type-1 FKMs are composed of vinylidene fluoride (VDF) and hexafluoropropylene (HFP). Copolymers are the standard type of FKMs showing a good overall performance. Their fluorine content is approximately 66 weight percent.

2023年1月23日 · Chemours Viton® uses three different designations: A, B, or F type polymers. The difference is in the polymer’s fluorine levels, which relates to its resistance to attack by fluids or chemicals. The two methods of curing are bisphenol and peroxide.

Fluoroelastomers are known for their broad chemical and heat resistance. Despite FKM’s higher cost compared to other elastomers, they are often the first choice in demanding seal environments and they approach the ideal for a universal sealing material.

2022年9月7日 · Fluoroelastomers are a family of fluoropolymer rubbers. FKM is the American standard (ASTM) short form name for Fluoroelastomers or fluoro rubber material. F stands for Fluoro; the K is an abbreviation of the German word Kohlenstoff, meaning Carbon; and the M is the designation of saturated backbone rubber from ASTM.

2019年1月27日 · Types and Properties of FKM. Made from copolymers of vinylidene fluoride and hexafluoropropylene, an array of FKM classes have been developed, each featuring different chemical compositions, fluorine contents, and crosslinking mechanisms to address different application requirements.

2024年7月9日 · According to ASTM D1418-2022, fluoroelastomers can be classified into five types: Binary Copolymers of Hexafluoropropylene (HFP) and Vinylidene Fluoride (VDF): These standard FKMs, also known as 26-type FKM or 2-type glue in China, account for over 80% of FKM usage. They offer balanced performance across various properties.

Type 1 FKMs are composed of vinylidene fluoride (VDF) and hexafluoropropylene (HFP). Copolymers are the standard type of FKMs showing a good overall performance. Their fluorine content typically ranges around 66 weight percent. Type 2 FKMs are composed of VDF, HFP, and tetrafluoroethylene (TFE).

FKM rubber (Fluoroelastomer) is a high-performance synthetic rubber known for its exceptional resistance to heat, oil, fuel, and chemicals. This FKM material is widely used across industries such as automotive, aerospace, chemical processing, and semiconductors due to its durability and ability to maintain performance in harsh environments.

There are three major general use grades of Viton: A, B and F. They differ primarily in their resistance to fluids, and in particular aggressive lubricating oils and oxygenated fuels, such as methanol and ethanol automotive fuel blends. There is also a class of.

Although Viton™ is one of the most widely used types of FKM, manufacturers such as 3M™, Solvay™, and Daikin™ have their own FKM products. Viton™ is produced under the strict manufacturing standards of Chemours™ and is generally more expensive than other FKM materials because of its branding, quality assurance, and multiple grades. ...