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Graphite packing 690
PTFE gasket
0.0 Yuan 0.0 Yuan
Product description
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Style 690 is a braided expanded low sulfur, low contaminant flexible graphite yarn. It also contains a sacrificial corrosion inhibitor. Style 690 is a nuclear grade packing.

Style 690 is available in the following cross-section range:
1/8" to 1 1/2" (3.0 mm to 38.1 mm)
 


Applications
Style 690 is suitable for steam, water, oil, solvents, alkalis, acids, and most chemicals. Exceptions are oleum, fuming nitric acid, aqua regia, and fluorine.
Style 690 is recommended for valve applications. It is also excellent for (nuclear) valves and other static applications where low sulfur, contamination specifications are required.

 

Performance
Rotary
Reciprocating
Valve
Max Pressure -psi bar kg/cm2
150/10/11
N/A
*5000/345/352
Temp - °F/°C
in non-oxid. atm.
-300 to +6000°F 
(-184 to +3316°C)
N/A
-300 to +6000°F 
(-184 to +3316°C)
 
in oxid. atm.
-300 to +850°F 
(-184 to +454°C)
N/A
-300 to +850°F 
(-184 to +454°C)
 
in steam
-300 to +1200°F 
(-184 to +649°C)
N/A
-300 to +1200°F 
(-184 to +649°C)
pH Range
0 to 14
N/A
0 to 14
Max Speed  fpm (mps)
4500 (23)
N/A
200 (1)
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