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SIGRAFLEX® HOCHDRUCK PRO

SIGRAFLEX® HOCHDRUCK PRO is a multilayer high-strength graphite sealing sheet comprising 0.5 mm thick layers of high-purity graphite foil and 0.05 mm thick stainless steel foils. Depending on the sheet thickness required, several layers of graphite and stainless steel foil are joined together in a patented adhesive-free process. As a result, the sheets have outstanding mechanical properties. The sealing sheet is impregnated to reduce leakage and improve handling.

SIGRAFLEX® HOCHDRUCK PRO allows end users in the process industry to cover almost their entire gasket application range with a reliable and safe product.

For difficult and mechanically highly stressed sealed joints (in tongue-and-groove and special-dimension flanges, process
equipment, heat exchangers); also suitable for all common pipework and vessel flange designs
Recommended for one-piece gaskets up to 1500 mm outside diameter; for diameters over 1500 mm as two-layer structures
with segmented sections and staggered joints, for instance
For high internal pressures of up to 250 bar
For corrosive media
Suitable for a broad range of temperatures from – 250 °C to approx. 550 °C under considerationof the chemical resistance; for
applications at more than 450 °C, users should request our advice
Gaskets for the chemical, petrochemical and nuclear industry as well as refineries
Steam pipework and boilers in power stations
Heat transfer oil and heating facilities
Inspection glasses, pumps, fittings
Existing plants

Color

Black/gray, purple printed

Thickness

1.5 mm

Sheetsize

1.5 x 1.5 / 1.0 x 1.0 m

Density

1.1 g/cm³

ASTM F36A Compressibilty

30 – 40 %

ASTM F36A Recovery

30 – 40 %

BS 7531 Residual Stress

> 48 N/mm²

Ash content of graphite (DIN 51903)

< 0.15 %

Total chloride content

< 10 ppm

m (ASME)

2.5

Y (ASME)

2000 psi