Graphite tape for spiral wound gaskets SWG 50 metre roll — DEMINAS DEMIGRAPH®
Graphite Tape

Graphite Tape for SWG - 50 Meters

Slit DEMIGRAPH® graphite foil tape cut to width from 4 mm up to 130 mm, in 0.38, 0.5 or 0.76 mm thickness and winding lengths up to 100 m. Free of sulphur, halogens and binders, used as filler for spiral wound gaskets and die-moulded graphite rings. Available in industrial, high-purity, nuclear and corrosion-resistant grades.
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Specifications
Material Graphite foil (slit tape)
Standard DIN 3535-6 / ASTM F2168 (grade-dependent)
Sheet size 4-130 mm width, up to 100 m roll
Full description

DEMIGRAPH® Graphite Tape

Slit tapes DEMIGRAPH® are manufactured with the use of a whole range of DEMIGRAPH® graphite foil with further cut to any required width upwards 4 mm / 1/8 " with high precision which makes it an excellent filler for production of quality spiral wound gaskets and graphite die-molded rings.

Due to special patented technology DEMIRAPH® tapes could be produced with high strength which solves the problem of breaking-up of filler for SWG's and graphite rings production.

Huge length of winding (up to 100m / 330’) makes possible longer continuous production and manufacturing of large diameter SWG’s.

APPLICATIONS:

Filler material for spiral wound gaskets and die-molded rings.

MAIN FEATURES AND PROPERTIES:

  • Huge length of winding (up to 100m / 330’);
  • Consistently accurate width and high strength.
  • Resistance to high temperatures.
  • Impermeability to gases and fluids.
  • Zero sulphur and halogen content.
  • Anti-sticking 
  • Fire-safety 
  • Absence of binders.

FORMS OF SUPPLY

Thickness …………………….. 0.38, 0.5, 0.76 mm / .015, .020, .030”

Width ……………………………4.0 – 130 mm / 1/8 - 5”

Length of winding ……….. 30, 50, 60, 90, 100 m / 100, 165, 200, 330’

Density …………………………. 1.0, 0.7, 1.12 g/cc / 62, 44, 70 lb/ft3

AVAILABLE OPTIONS OF GRAPHITE FOIL 

Parameter

Grade B

Industrial

Grade G

High-purity

Grade D

Nuclear

Grade C

Anti-oxidation and аnti-corrosion

Grade T

High-purity and oxidation resistant

Grade 1T

Ultra-low losses

Carbon, %

> 98,0

> 99,0

> 99,85

> 98,0 (99,0*)

> 99,0

> 99,0

Ash, %

< 2,0

< 1,0

< 0,15

< 2,0

< 1,0

< 1,0

Sulfur, ppm

< 200

< 100

< 50

< 100

< 100

< 100

Chlorine**, ppm

< 40

< 40

< 20

< 40

< 20

< 20

Fluorine**, ppm

< 20

< 10

< 10

< 10

< 10

< 10

Total halogens (Cl+F+Br)** , ppm

< 200

< 100

< 50

< 200

< 100

< 100

Tensile strength, MPa

> 4,5 (> 700 psi)

> 4,5 (> 700 psi)

> 4,0 (> 700 psi)

> 5,0 (> 725 psi)

> 5,0 (> 725 psi)

> 5,0 (> 725 psi)

Compressibility, %

> 40

> 40

> 40

> 40

> 40

> 40

Recoverability, %

> 10

> 10

> 8

> 10

> 10

> 10

Oxidation and corrosion inhibitor

-

-

-

yes

yes

yes

Weight loss (670 °C / 1238 °F), %/h

< 12

< 12

-

< 4

< 3

< 1

Compliance to special requirements

DVGW DIN 3535-6

BAM; ASTM F2168 class 2 (B)

PMUC norms; GS RC PVE 011; BAM; ASTM F2168 class 2 (B)

MESC 85/203; EN 14772 §6.7; ASTM F2168 class 2 (A); DIN-28091-4

MESC 85/203; EN 14772 §6.7; ASTM F2168 class 2 (A); DIN-28091-4

MESC 85/203; EN 14772 §6.7; ASTM F2168 class 2 (A); DIN-28091-4