Material

Thickness

(mm)

Weight of

Density

Thermal

resistance(℃)

Chemical

resistance

Remarks

duration

short-term

Acids

Lye

 Structural fabrics or insulating fabric

Cotton

0.2

170g/m²

80

100

-

-

Polyester

0.2

230g/m²

150

180

O

O

Glass cloth

0.35 to 1.6

400 to 1830g/m²

540

600

O

O

Aramid

0.6 to 2.4

180 to 850g/m²

300

350

-

O

Silica cloth

0.4 to 1.2

300 to 1190g/m²

1100

1260

White asbestos 4A

0.8 to 3.0

600 to 2000g/m²

480

550

-

O

White asbestos 2A

0.8 to 3.0

480 to 1500g/m²

320

400

-

O

White asbestos A

0.8 to 3.0

460 to 1400g/m²

290

3500

-

O

White asbestos B

2.0 to 3.0

450 to 1350g/m²

230

280

-

O

Blue asbestos

2.0 to 3.0

1300 to 2000g/m²

430

480

O

Ceramic cloth

1.5 to 3.0

700 to 1400g/m²

800

1000

O

O

Coating

Silicon rubber

0.2 to 1.0

220 to 1100g/m²

250

280

O

O

PTFE

0.1 to 0.25

240 to 600g/m²

250

280

Neoprene

0.2 to 1.5

210 to 1570g/m²

90

100

O

O

Hypalon

0.2 to 1.5

210 to 1570g/m²

110

140

O

O

EP rubber

0.2 to 1.5

207 to 1550g/m²

120

140

O

O

Viton (Fluoride rubber)

0.2 to 1.5

370 to 2800g/m²

205

315

O

PVC

0.1 to 0.3

140 to 420g/m²

80

90

O

-

Aluminium coating

0.08 to 0.15

110 to 210g/m²

600

700

-

-

Sealing foil

PTFE

0.15 to 0.3

180 to 360g/m²

250

280

Stainless steel (321)

0.1 to 0.2

790 to 1580g/m²

800

800

O

Hypalon rubber

0.3 to 2.0

315 to 2100g/m²

110

140

O

O

Silicon rubber

0.3 to 0.2

330 to 2200g/m²

250

280

O

O

Aluminium

0.15

210g/m²

600

700

-

-

Insulating materials

Ceramic

6.0, 12.5, 25.0

130g/m²

1300

1400

Glass fiber

25 to 100

24g/m²

350

400

O

O

Mineral wool

25 to 75

40g/m²

600

650

O

O

Reinforced fabric

Stainless steel mesh

0.2 to 0.6

400 to 1200g/m²

800

1000

O

O

Carbon steel mesh

0.3 to 0.6

570 to 1140g/m²

400

500

-

-

Bronze mesh

0.2 to 0.6

400 to 1200g/m²

450

600

O

O

Braze mesh

0.2 to 0.6

400 to 1200g/m²

400

500

O

-

  resistant      O conditionally resistant          - non resistant