Chemraz® 526

RGD, also known as explosive de- compression, is a phenomenon that often occurs when high-pressure gas molecules migrate into an elastomer at a compressed state. When the pressure surrounding the elastomer is suddenly released, the compressed gas inside the elastomer tries to expand and exit the elastomer, thus causing RGD. Most elastomers expe- rience severe blistering or cracking when the forces of these expanding gases overcome the strength of the surrounding material. However, Chemraz 526® offers superior RGD properties and the broadest chemical compatibility, e.g., better resistance to sour gas, acids, caustics, hot water, and steam.

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Chemraz® 526
Rapid Gas Decompression Resistant

Greene Tweed’s Chemraz® 526, a perfluoroelastomer, offers superior chemical compatibility and high-temperature performance, coupled with rapid gas decompres-sion (RGD) (also known as explosive decompression) resistance, making it the ideal compound for hostile oilfield environments in downhole and surface equipment. Chemraz® 526 has a temperature range from -4°F to 482°F (-20°C to 250°C). With its outstanding RGD-resistant capabilities, Chemraz 526® is well suited in a range of applications, from drilling tools, wireline tools, and completion equipment to pumps
and valves. Chemraz 526® is available for use as o-rings, gaskets, and many other custom shapes.

Features and Benefits
• Successfully passed ISO 23936-2 and NORSOK M-710 test protocols
• Received a perfect score (0-0-0-0) for ISO RGD resistance - no cracks, holes, or blisters
• Provides excellent RGD resistance for equipment operating in high-temperature environments so parts maintain sealing properties and equipment life is extended
• Combines broad chemical resistance with RGD resistance while preventing leakage and equipment failure
• Reduces maintenance cost and mean time between failure

Applications
• Drilling tools
• Wireline tools
• Perforating equipment
• Completion equipment
• Valves
• Pumps

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