Plates Type METAGRAPH – G
Plates made of pure expanded graphite with excellent chemical stability and excellent resistance to creep reinforced with tanged metallic insert.
Suitable for heavy duty applications with low loads of torque, good for high temperature and pressure cycles or thermal-mechanical shock, steam, chemically aggressive fluids except strong oxidizing agents.
Max. work range temperature
with air or oxidizing substance
Inert fluid but with coupling exposed to air
Environment of the joint fluid and inerti
Min. work range temperature
Maximum pressure of security in continuous operation
ASTM F 36
15 / 20 %
Stress relaxation a 400°C
BSI F 125
Resistance to crushing σvo(RT)
Resistance to crushing σBo (300°C)
Tensile strenght (min.)
ASTM F 104
Permeabiity to nitrogen 40 bar, RT
< 0,6 ml/min.
Leachable chloride content
≤ 50 ppm
Leachable fluoride content
≤ 50 ppm
Factors Clamping ROTT test / ASME code
*The data listed depend on a variety of factors (state of the joints, dimensions, clamping, thermal and mechanical shock etc.) To which can be indicated for orientation purpose.