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Pure Mica Gasket

Pure Mica Gasket

Pure Mica Gasket is made by cutting or rushing mica sheet.The mica sheet is made by heating,suppresssing,combining the 90% mica and 10% glue.

Model:SG-G1217

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Product Description


Pure Mica Gasket is made by cutting or rushing mica sheet.The mica sheet is made by heating,suppresssing,combining the 90% mica and 10% glue.

Mica is stratiform mineral,its composed of potassium (K), aluminum (AI),magnesium (Mg),Iron(Fe) and lithium(Li).There are different categories of mica, including white mica, phlogopite, biotite and lepidolite (Lithia mica) . White mica is widely used in industry and national defense because it is elasticity, tenacity and insulativity. it is also acid and alkali resistant, and corrosion proof, which can be stripped, with low coefficient of expansion etc.


Application of Pure Mica Gasket

Applied to various industries of steel, metallurgy, power generation ,and all kinds of industrial electric furnace,such as power frequency furnace ,refining furnace, intermediate frequency furnace, calcium carbide furnace, ferroalloy, yellow phosphorus furnace, electric arc furnace, power plants, electrolytic aluminum power frequency furnace, intermediate frequency furnace, electric arc furnace and high temperature insulation and various sealing gaskets for electric welding machine, lightning arrester, electric heating element.


Size

type

Rigid muscovite mica gasket

Rigid phlogopite mica gasket

Thickness/ mm

0.2-100

0.2-100

Heat resistant C

Continual service

500

700

 

Intermittent service

700

900

Dielectric strength kv/mm(≥)

20

20

Heat Loss %(≤)

500°C

0.5

0.5

 

700°C

0.8

0.8

 

When parts thickness < 2mm, punch process size tolerance: +/-0.05mm

When parts thickness > 2mm, process size tolerance: +/-0.1mm

 

Specification of heat-resistant mica hard sheet

Item

Heat-resistantphlogopite hard sheet

Heat-resistant white mica hard sheet

Mica paper

Phlogopite 

White mica

Binder

Organic silicon resin

Organic silicon resin

Mica content (%)

≥ 90%

≥ 90%

 silicone content(%)

≤ 10%

≤ 10%

Thickness (mm)

0.10~2.0

0.10~2.0

Thickness error (mm)

Average

±0.02-±0.05

±0.02-±0.05

Each point

±0.05-±0.08

±0.05-±0.08

Density (g/cm 3 )

1.6-2.2

1.6-2.2

Heat loss (%)

≤0.60

≤1.00

Bending strength 

(kgf/mm 2 )

≥16

≥18

Breakdown voltage (KV/mm)

>18

>20

High temperature insulation resistance

 (M Ω )

100-600

200-600

 Long-term Working Temperature

850℃

550℃

 Standard size (mm)

1000 × 600, 1000 × 1200

1000 × 600,1000 × 1200

Testing standard

GB5019-85, IEC371

GB5019-85, IEC371

 

Specification of heat-resistant mica soft sheet

Item

Heat-resistantphlogopite soft sheet

Heat-resistant white mica soft sheet

Mica paper

Phlogopite 

White mica

Binder

Organic silicon resin

Organic silicon resin

Mica content (%)

≥ 90%

≥ 90%

 silicone content(%)

≤ 10%

≤ 10%

Thickness (mm)

0.10~2.0

0.10~2.0

Thickness error (mm)

Average

±0.02-±0.25

±0.02-±0.25

Each point

±0.04-±0.06

±0.04-±0.06

Density (g/cm 3 )

1.6-2.2

1.6-2.2

Heat loss (%)

≤2.00

≤2.00

Bending strength 

(kgf/mm 2 )

-

-

Breakdown voltage (KV/mm)

>15

>15

High temperature insulation resistance

 (M Ω )

-

-

 Long-term Working Temperature

850℃

550℃

 Standard size (mm)

1000 × 600 1000 × 1200

1000 × 600 1000 × 1200

Testing standard

GB5019-85, IEC371

GB5019-85, IEC371

 

Feature of Pure Mica Gasket:

1. High-temperature insulation,arc resistance and corona resistance

2. Stable chemical properties ,acid and alkali resistance

3. Good resistance to high heat and high voltage

4. Excellent mechanical strength

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