Pressure. Grease. Steam. The fields of application in the oil and gas industry place great demands on every seal’s resistance properties. The central factors that everything boils down to are efficiency and safety.
From the drill drive on the oil platform to the underwater valve; from the refinery area to the pipeline – seals in the oil and gas industry are used in the widest range of different applications. Whether drilling, pumping or processing; whether underwater or during finishing; in static or rotating applications – the production process presents extreme challenges for the materials used. And there is a central theme: the phenomenon of explosive decompression.
So it’s great that reliability is one of our greatest strengths.
Meeting your demands: COG’s solutions
One of the greatest problems, and therefore one of the greatest demands in this sector, is the phenomenon of explosive decompression. First and foremost, this affects seals that need to seal off gaseous media when the gas sinks from high pressure to low in just a short time. Visible damage occurs, such as blisters on the O-ring’s surface or fissures in the material. This phenomenon is known by manufacturers and operators in the oil and gas industry as explosive decompression, and is as well-known as it is feared. The solution needs to be able to resist explosive decompression.
For applications in the field of natural gas production (such as pig traps, ball cocks and other types of regulating valves), COG offers a wide range of tested materials that have been designed to meet the high demands of resistance against explosive decompression. (AED = Anti-explosive decompression; RGD = Rapid gas decompression.) These sealing materials have proven themselves in long-term tests in compressor construction and oil extraction. Depending on the requirements, various FKM / FPM, HNBR and FFKM / FFPM sealing materials are available.
All sealing materials have been successfully tested in accordance with the NORSOK M-710 standard – the decisive international standard in this area of application, and a guarantee of safety against explosive decompression.
Some of the sealing materials have additional important approvals for the industry, such as: ISO 23936-2, NACE TM0187, NACE TM0297 and DVGW DIN EN 682 - GBL. Several sealing compounds are also suitable for use in components or assemblies with API 6A & 6D in the valve industry.
O-rings and elastomer seals for the oil and gas industry:
For detailed information on your COG sealing solution please use our product adviser.
Image sources: iStock/landbysea