Chemraz® 526

Features and Benefits • Broad chemical compatibility for use with a wide range of harsh solutions • Lower compression set provides better ability to handle temperature and pressure variations, shaft misalignment, and o-ring shrinkage • Low-temperature capabilities (-22°F/-30°C)

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全氟橡胶丨美国GT Chemraz组合密封系列

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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

Typical Properties
Physical Properties (ASTM Standard)	Typical
Color	Black
Specific Gravity (D792)	1.95
Hardness,Shore A,Points (D2240)	97
Tensile Strength,psi (MPa)(D1414)	2,780(19.2)
Elongation @Break,%(D1414)	90
Modulus @10%Elongation,psi(MPa)(D1414)	860(5.9)
Tear Strength,psi [MPa](D624)	260 [1.8]
Temperature Range,F(C)	-4 to 482 (-20 to 250)

Note:Unless otherwise noted,all tests performed on 214 o-rings.

Chemraz526 has been successfully tested under the following conditions:

Test	Temperature °F(℃)	Pressure psi(MPa)	Media	Decompression Rate psi(MPa)	Cycles	Configuration
A	Ambient	800(5.52)	CO₂	260(1.79)/sec.	1	Open
B	160 (71)	2,400(16.55)	CO₂/N₂	1,000(6.89)/min.	3	Gland
C	160 (71)	2,400(16.55)	CO₂/N₂	1,000(6.89)/min	5	Gland
D	150(66)	2,000 (13.79)	CO/CH₄	1,000(6.89)/min.	5	Gland
E	150(66)	2,000 (13.79)	CO₂/N₂	1,200(8.27)/min.	5	Open