Operating range

Armatur Pressure [pmax]: 300 bar
pH: 0 - 14
Density 1.20 g/cm³

Temperature: t = -200… +550 °C

Practical useful application data:

max. temperature in oxidizing atmosphere: +400 °C

Main application

  • Valves
  • Fittings
  • Gate valves
  • Flaps
  • Door and lid seals

Suitable for

  • Power plant technology
  • Petrochemical plants
  • Boiler houses
  • High pressure- and high temperature applications

For higher pressure and temperature applications use suitable bullrings.

Form of delivery

This packing can be manufactured from 3 to 40 mm square as well as in intermediate, inch sizes and special measurements.

03 - 09 mm on 1 kg spool
10 - 15 mm on 2,5 kg spool
16 - 25 mm on 5 kg spool

Special length, pre-cut or die formed rings on request.

1 kg of packing of the following cross-sections is equivalent to displayed meter lengths:

Size mm["] Meter Size mm["] Meter
3 [1/8"] 81,4 13 [1/2"] 5,5
4 55,3 14 [9/16"] 4,5
5 [3/16"] 35,4 15 3,9
6 24,6 16 [5/8"] 3,5
6,4 [1/4"] 21,9 18 2,7
8 [5/16"] 13,8 19 [3/4"] 2,5
9,5 [3/8“] 9,8 20 2,2
10 8,8 22 [7/8"] 1,8
11 [7/16“] 7,2 25 [1"] 1,4
12 6,1

A 44 I Grapho Extra
Braid of Flexible Expanded Graphite Tape Reinforced with Inconel Wire

Characteristics

  • Universal use valve packing
  • Expanded graphite of higher quality
  • Coefficient of expansion similar to steel
  • For valve applications rings should be approx. 20 - 25 % compressed at installation
  • Precompressed rings are recommended
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