Novus™ Sigraflex Hochdruck
PRODUCT TYPE: Graphite Laminate (Exfoliated Graphite)
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.
Sigraflex Hochdruck is produced specifically for applications requiring
a high degree of purity in the laminate, such as the Nuclear industry.
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.
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
- 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
- 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
Heat transfer oil and heating facilities
Specifically designed for use in low bolt-loaded irregular flanges.
Typical flanges include glass lined, ceramic, plastic coated or uneven
Oxidising media -200°C to 450°C
1.5 mm; 2.0 mm; 3.0 mm; 4.0 mm
1000 mm x 1000 mm; 1500 mm x 1500 mm
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).