Novus™ Sigraflex Hochdruck

PRODUCT TYPE: Graphite Laminate (Exfoliated Graphite)
COLOUR: Black

Sigraflex Hochdruck is a Graphite Sealing Sheet with High-Integrity Stainless Steel Foil Reinforcement for Extreme Conditions. This multilayer high-strength sheet material comprises of 0.5 mm thick layers of high-quality graphite foil (type Z) and 0.05 mm thick stainless steel foil.

Description:

Sigraflex Hochdruck is produced specifically for applications requiring a high degree of purity in the laminate, such as the Nuclear industry.

Properties

Depending on the sheet thickness required, several layers of graphite and stainless steel foil are joined together in a special process.

SIGRAFLEX HOCHDRUCK is a sealing material with excellent mechanical properties.

Applications

For gaskets meeting increased demands on operational reliability and sealability, notably:

  • Requirements of the German Clean Air Act (TA Luft)
  • Blow-out resistance
  • Fire safety


For mechanically highly stressed sealed joints exposed to:

  • Very high gasket pressures of up to 400 N/mm2 (see material data)
  • Very high internal pressures of up to 250 bar


For gaskets in tongue-and- groove flanges meeting DIN and ANSI standards:

  • It is recommended that the bolts be tightened up to the permitted limit.
  • Recommended as one-piece gaskets up to 1500 mm outside diameter; over 1500 mm diameter as two- layer structures in segments.

Examples of application

Gaskets for:

  • Chemical and petrochemical pipework and equipment with hot and/or corrosive media
  • Steam pipework in power stations
  • Inspection glasses, pumps, fittings and vessels
  • Existing plants (after extended service).
  • Heat transfer oil and heating facilities

Colour:

Black

Service:

Specifically designed for use in low bolt-loaded irregular flanges. Typical flanges include glass lined, ceramic, plastic coated or uneven flanges.

Max Temp:

Oxidising media -200°C to 450°C

Max Pressure:

140 bar

Thickness Range:

1.5 mm; 2.0 mm; 3.0 mm; 4.0 mm

Sheet Size:

1000 mm x 1000 mm; 1500 mm x 1500 mm

Rating:

Please view Specifications

How a Sigraflex Hochdruct gasket with eyelet works

Gaskets in this material with stainless steel eyelets make for much better sealability (see sketch below).