Application

A sealing sheet designed for use at high temperatures and pressures. Recommended for use with steam, hydrocarbons and most chemical compounds, with the exception of strong oxidisers.

It is characterised by resistance to mechanical and thermal cycling, as well as sudden temperature changes.

Material

The sheet is made from 99.5% pure expanded graphite film, reinforced with 0.1 mm thick perforated AISI 316L sheet metal.

• sulphur content: max 300 ppm
• Chloride content: max 50 ppm

Technical data

• Designation according to DIN 28091-4: GR – 10 – 0 – 1M – Cr
• Maximum working pressure: 12 MPa
• Continuous operating temperature: –250°C to +450°C
• Short-term operating temperature: up to +550°C
• Continuous operating temperature in steam: up to +550°C
• Colour: graphite

Dimensions

Standard plate thicknesses:

• 1.0 / 1.5 / 2.0 / 3.0 mm

Standard sheet sizes:

• 1000 × 1000 mm
• 1500 × 1500 mm

Physicochemical properties

• density (+/- 5%): 1.0 g/cm³
• tensile strength (min.): 20 MPa
• compressibility: 35–45 %
• Elastic recovery (min.): 15–20 %
• Residual stresses after 16 h at 300°C (min.): 38 MPa (BS 7531)
• residual stress after 16 h at 300°C (min.): 48 MPa (DIN 52913)
• ash content (max): 0.5 %