Manufactured from flexible graphite foil mechanically clinched to a 0.1mm thick stainless steel tanged (perforated) metal sheet - SUS316 insert. It has good compressibility and resilience, excellent sealing property for microscopic surface irrgeularities and long working life. Whatsapp:86 13566083951 The dimensions of the standard sheets: Size: 1000*1000mm,1500*1500mm,1000*500mm Thickness: 1.0mm ~ 4.0mm