Expanded Graphite Sheets
Sealrite expanded graphite sheets is made from pure mineral graphite and formed into sheets through a laminar process. Commonly used for gaskets for flanges and connections in demanding application or as an asbestos gasket substitute. Sealrite offers expanded graphite sheets in the following styles:
Style 188: Pure homogeneous expanded mineral graphite
.This style offers the highest temperature rating for inert or reducing environment of up to 2000oC
Style 388: Expanded mineral graphite with steel foil sheet reinforcement
The steel foil insertion allows for better handling and higher operating pressure
Style 488: Expanded mineral graphite with tanged stainless steel 316 reinforcement
Stainless Steel 316 sheet allows the material to achieve substantially higher dynamic loading giving it a high blow out resistance and mechanical strength. The insertion also allows for better handling.
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Specifications:
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Style 188
Homogenous
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Style 388
SS 316 Foil Insert
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Style 488
Tanged SS316
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Density of graphite
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1 g/cm3
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1 g/cm3
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1 g/cm3
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Ash content
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<2.0 %
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<2.0 %
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<2.0 %
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Chloride content
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<30 ppm
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<30 ppm
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<30 ppm
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Gas permeability
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<0.2 ml/min
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<0.5 ml/min
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<0.5 ml/min
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Reinforced material thickness
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-
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0.05mm
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0.10mm
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Operating Temperature:
-oxidising environment
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-200oC to 500oC
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-200oC to 500oC
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-200oC to 500oC
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Operating Temperature:
-inert or reducing environment
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-200oC to 2000oC
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-200oC to 750oC
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-200oC to 750oC
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Operating Pressure
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80 bar
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100 bar
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200 bar
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Compressibility
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45%
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45%
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35%
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Recovery
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13%
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13%
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17%
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Tensile Strength
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4.5N/mm2
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25N/mm2
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25N/mm2
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Standard Dimensions
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1m x 1m
1.5m x 1m
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1m x 1m
1.5m x 1m
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1m x 1m
1.5m x 1m
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Available Thickness
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0.2mm to 3mm
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0.8mm to 3mm
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1mm to 3mm
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