Statotherm HD 9593/HD

Statotherm HD 9593/HD

Statotherm HD 9593/HD


Statotherm HD 9593/HD is a reinforced, multilayer graphite gasket sheet made from 0.5 mm thick layers of high quality impregnated graphite foil (purity ≥ 99.85 %) combined without adhesive with 0.05 mm thick stain- less steel foil layers (AISI 316 (L)). Statotherm HD 9593/HD is outstanding for use in applications where high surface pressures are combined with high operating pressure. This seal is particularly useful where there are increased requirements in terms of seal tightness and operational safety. Equates to the SGL Sigraflex Hochdruck.


  • Very high maximum surface pressure
  • No embrittlement (contains no adhesive)
  • High mechanical strength

Operating range

Pressure: p = 250 bar
  • Continuous operation:
    t = -250 °C ... +450 °C
  • Steam: tmax+550°C
Recommended surface roughness:
RZ = 12.5 ... 50 μm

Chemical resistance: pH = 0 … 14
Resistant to almost all organic and inorganic acids, alkalis, oils and solvents. Not suitable for use in highly oxidizing media or in elementary fluorine, bromine, sulfur trioxide or ozone (O3) > 150 °C.

Standards and approvals

  • TA Luft in various flanged versions and unflanged for tongue-and-groove flanges
  • BAM (upon request)
  • DVGW
  • Fire Safe API 607
  • Blow-out resistance (TÜV Süd)
  • Germanischer Lloyd
  • TRD 401


9593/HDP (sheets)
9593/HDR (rings and cuts)
9593/HDMH (manhole gasket according German TRD 401)
9593/HDPpro (impregnated for low leakage application acc. TA-Luft)
9593/HDRIG (with inner eyelet made of stainless steel (1.4571), thickness: 0.15 mm)
9593/HDOR (reduced sulphur content < 200 ppm)


For safe operation, always use seals that are dry and undamaged.

Forms of supply

  • Sheets:
    1.000 x 1.000, 1.500 x 1.500 mm
    1,0 / 1,5 / 2,0 / 3,0 / 4,0 mm thickness
  • Rings and molded parts:
    Standard dimensions as per DIN EN 1514-1 or ASME B16.21
  • Manhole gasket to TRD 401, 3.0 mm thick