FS-Inverted - Graphite Disks


ZOOK’s Fluoropolymer Sintered Graphite Rupture Disk (bursting disc) offers enhanced features when compared to resin impregnated graphite disks. The Fluoropolymer coating is sintered at a high temperature onto a graphite blank. The durable coating seals the graphite material enhancing the corrosive capability and allows the disk to operate at sub-zero to elevated temperatures with minimal effect on the burst performance of the rupture disk (bursting disc).


  • The best choice for highly corrosive and broad temperature range applications
  • Non-stick surface conforms to FDA regulations
  • Resists product build-up – only the coated flat surface of the disk is exposed to the process media
  • Durable coating offers exceptional corrosion resistance
  • Available in nominal sizes 1” (25 mm) thru 24” (600 mm) diameters
  • Designed to fit industry standard flanges ASME B16.5, ISO and JIS
  • Burst ratings to 1,000 psig (68.95 barg)
  • 0% manufacturing range is standard
  • Operating pressures to 90% of the disk’s marked burst pressure (Contact ZOOK for operating ratio for burst pressures below 40 psig)
  • Extended temperature range: –290°F to +500°F (–143°C to +260°C)
  • Vacuum support not required for disks with burst pressures of 25 psig and above (Use FS-V Inverted Type for vacuum service)
  • All flange group 2 disks are armored
  • ASME (UD) and PED (CE) compliance available


Mono Specifications