New high-tech FFKM compounds

18th October 2016
Source: COG
Posted By : Anna Flockett
New high-tech FFKM compounds

The requirements in all sectors and applications are continuously becoming more complex. Not only must seals be resistant to temperature, they must also be able to withstand a wide variety of chemicals and be resistant not only to vapour, but also to solvents. Or sometimes they need to be able to resist changes in media, plus high pressure. In these situations, a high quality perfluorelastomer (FFKM) seal really is a must.

Precisely for these applications, COG has developed a new range of FFKM materials - COG Resist.

The FFKM product family launches with four compounds: two universal materials, a special FFKM compound for use in the oil and gas industry and a compound for the food and pharmaceutical industry. The two all-round materials, COG Resist RS 75 AL and COG Resist RS 80 AL demonstrate outstanding resistance to chemicals and acids, as well as possessing excellent mechanical properties.

COG Resist RS 75 AL is therefore heat resistant at temperatures of up to 325°C, and COG Resist RS 80 AL is heat resistant up to 260°C. Both FFKM compounds demonstrate low gas permeability and extremely low levels of swelling.

The COG Resist RS 92 AED seal material was developed especially for applications where resistance to explosive decompression is required, and has been tested to NORSOK standard M-710 and NACE TM 0297.

Wherever seal materials are exposed to high pressure and aggressive media, COG Resist RS 92 AED provides the security you need. The compound combines chemical resistance with excellent thermal resistance. These properties, along with its low compression set, mean that it is especially suitable for meeting the high demands made by the oil and gas industry in particular, for example, for use in deep sea valves, pumps or compressors.


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