DALFRATEX®

PROPERTIES & ADVANTAGES

  • Good electrical insulation
  • High electric strength
  • Low electrical conductivity
  • Compatible with mineral acids (except phosphoricand hydrofluoric)
  • Compatible with a wide range of substances (air, chloride, carbon monoxide, ammonia and sulphur dioxide)
  • Compatible with silica refractories at high temperatures

Sleeving

DALFRATEX® is a range of inorganic fibres and textiles. The materials are capable of operating continuously at 1000°C and at up to 1600°C for limited periods. They will not melt or vapourise until temperature exceeds 1700°C, and have a high resistance to thermal shock.

DALFRATEX® products also provide flexible electrical insulation at temperatures as high as 1000°C. They are composed of continuous filaments of amorphous silica, which combine the flexibility of fibres and textiles, with the refractory properties of silica.

The majority of DALFRATEX® products are available in two basic forms, i.e. standard and pre-shrunk.

Technical data
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DALFRATEX® sleevings
Code
S-R4 S-R6 S-R8 S-R25 S-R32 S-F16  S-F20  S-F25  S-F30  S-8 S-43  S-44  S-46
Classification temperature °C 
1000 1000 1000 1000 1000 1000
1000
1000
1000  1000
1000
1000
1000
Short term exposure (peak) °C
1600 1600 1600 1600 1600 1600
1600
1600
1600  1600
1600
1600
1600
Indicative yield at stated diameter m/kg @ mm                     9@
50 
 9@
65
 9@
75

Shrinkage @1000 °C – 24h full soak, % < 2 < 2
< 2
< 2
< 2
< 2
< 2
< 2
< 2  < 2
< 2
< 2
< 2


DALFRATEX® sleevings
Code
S-R4 S-R6 S-R8 S-R25 S-R32 S-F16  S-F20  S-F25  S-F30  S-8 S-43  S-44  S-46
Classification temperature °C 
1000 1000 1000 1000 1000 1000
1000
1000
1000  1000
1000
1000
1000
Short term exposure (peak) °C
1600 1600 1600 1600 1600 1600
1600
1600
1600  1600
1600
1600
1600
Indicative yield at stated diameter m/kg @ mm                     9@
50 
 9@
65
 9@
75

Shrinkage @1000 °C – 24h full soak, % < 2 < 2
< 2
< 2
< 2
< 2
< 2
< 2
< 2  < 2
< 2
< 2
< 2
Dimensions & size availability
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DALFRATEX® sleevings
Code
S-R4 S-R6 S-R8 S-R25 S-R32 S-F16  S-F20  S-F25  S-F30  S-8 S-43  S-44  S-46
Nominal bore mm  
3.2 4.8 6.4 20 25 10
13
20
25  30
50
65–75
75– 85
Nominal wall thickness mm
0.5 0.5 0.6 1 1 0.4
0.5
0,5
0.5  1
     
Nominal package m* 30 30
20
15
15
30
30
20
20        

* All package sizes are nominal. To obtain an exact package or material length a surcharge will be added.


DALFRATEX® sleevings
Code
S-R4 S-R6 S-R8 S-R25 S-R32 S-F16  S-F20  S-F25  S-F30  S-8 S-43  S-44  S-46
Nominal bore mm  
3.2 4.8 6.4 20 25 10
13
20
25  30
50
65–75
75– 85
Nominal wall thickness mm
0.5 0.5 0.6 1 1 0.4
0.5
0,5
0.5  1
     
Nominal package m* 30 30
20
15
15
30
30
20
20        

* All package sizes are nominal. To obtain an exact package or material length a surcharge will be added.
Working & processing
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The flexible tapes can be worked and processed with conventional textile working tools.
The flexible tapes can be worked and processed with conventional textile working tools.
Typical applications
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  • Aerospace (gas turbine and rocket engines)
  • Metallurgical/Steel production
  • Glass manufacture
  • Fire protection
  • Electrical heating
  • Pipeline and vessel fabrication
  • Gas production
  • Nuclear power
  • Electrical generation
  • Petrochemical
  • Aerospace (gas turbine and rocket engines)
  • Metallurgical/Steel production
  • Glass manufacture
  • Fire protection
  • Electrical heating
  • Pipeline and vessel fabrication
  • Gas production
  • Nuclear power
  • Electrical generation
  • Petrochemical