Description

PTFE Gasket: the Full name is Polytetrafluoroethylene Gasket, And Other names are PTFE Ring Gasket, PTFE 0 Ring, PTFE Washer. Beluns Gasket : Mechanical grade PTFE resin is suitable for most applications where PTFE is used. Mechanical grade is produced with a very small percentage of reprocessed (recycled) PTFE. It is ideal for a wide range of gaskets applications. Food, and Chemical applications are often sealed using PTFE . PTFE sheets are available in both Virgin, Mechanical and Expanded PTFE grades .

PTFE - an acronym for Polytetrafluoroethylene - is a high molecular weight polymer, one of the most versatile plastic materials known and useful for a large range of products for applications excluded to other materials. PTFE has extremely low coefficient of friction. PTFE is generally considered a thermoplastic polymer; at 327°C it maintains a very high viscosity, thus requiring particular transformation techniques for manufacturing of finished and semi-finished goods. PTFE can be employed at any temperature from -200°C to +260°C.

virgin Grade PTFE Gasket

and its advanced properties make it an ideal choice of material for a wide range of applications - particularly those requiring high temperature, chemical resistance and excellent slip-stick performance. PTFE has advanced properties making it an ideal choice of material for a wide range of applications. PTFE rod, PTFE sheet and PTFE tube is particularly useful where high temperature or excellent chemical resistance is required. With its low coefficient of friction PTFE also exhibits excellent slip-stick performance.

Glass Filled PTFE Gasket

PTFE is reinforced with 25% glass fibres. The added glass fibre improves the wear properties and, to a minor degree, also the deformation strength under load while leaving substantially unchanged the electrical and chemical characteristics. However, it is important to remember that glass, has a rather poor resistance against alkalis and is easily attacked by hydrofluoric acid. The coefficient of friction is also slightly increased.

Carbon Filled PTFE Gasket

25% carbon is added to the PTFE, along with a small percentage of graphite. The carbon tends to improve - to a considerable degree - wear and deformation strength, whilst leaving the chemical resistance practically unchanged, but substantially modifying the electrical properties.

Other Filled PTFE Grade Gasket

PTFE, because of the properties previously described, is used in many applications. Properties can be improved and/or modified by adding suitable fillers. The fillers most commonly used, in concentrations to suit application, are: Glass fibre, Carbon fibre, Bronze, Graphite, Molybdenum disulphide (MoS2), Metal powders, Ceramics, Metal oxides, and can also be produced using mixtures of two or more additives.

 

Beluns PTFE Sheet gasket Material: comes in several forms. The first thing that must be determined is what type of PTFE gasket material your looking for. The first and most common form is a virgin PTFE gasket material. Virgin PTFE is specified for medical or electrical applications. Most applications however are not medical or electrical and can easily be satisfied with mechanical grade PTFE. Flat Ptfe Gaskets With Good Sealing Performance, Corrosion Resistant Ptfe Gasket Filled With Carbon Fiber, PTFE Flange Gaskets For Automotive, Non - Viscous, Chemical Resistant Ptfe Teflon Gasket Sealing, High Demand Ptfe Gasket Washer A Grade For Air Conditioner, Heat Resistant Ptfe Flat Washer, Anti - Creeping Ptfe Gasket Heat Resistant For Refrigerator, High Temperature Rubber Ptfe Gasket With 23MPa Yield Strength, Low Flammability Ptfe Shim Washer With Chemical Resistant, Heat Resistant Ptfe Gasket Sealing , 30MPa Tensile Strength, Chemical Resistant Ptfe Flange Gasket, Reinforced Ptfe Gasket With High Performance And Low Friction. Sealing ptfe gasket, Super High Strength Ptfe Gasket, Lattice Braid Excellent Insulation Virgin Ptfe Gasket, Excellent Insulation Virgin Ptfe Gasket, Specialty Expanded Ptfe Teflon Flat Washer For Pressure Cooker.

 

PTFE GASKET (Size)

PTFE GASKET

OD (MM)

ID (MM)

T (MM)

PTFE

PTFE + FiberGlass

PTFE + Graphite

PTFE + Carbon

PTFE + Bronze

PTFE + Aramid 

10

5

3

0.0004

0.0004

0.0004

0.0004

0.0006

0.0004

15

5

3

0.0011

0.0011

0.0011

0.0011

0.0016

0.0011

20

5

3

0.0020

0.0020

0.0020

0.0020

0.0031

0.0020

25

5

3

0.0033

0.0032

0.0033

0.0033

0.0049

0.0033

30

5

3

0.0047

0.0047

0.0047

0.0047

0.0072

0.0047

35

10

3

0.0061

0.0061

0.0061

0.0061

0.0093

0.0061

40

10

3

0.0081

0.0081

0.0081

0.0081

0.0124

0.0081

45

20

3

0.0088

0.0088

0.0088

0.0088

0.0134

0.0088

50

30

3

0.0087

0.0086

0.0087

0.0087

0.0132

0.0087

55

30

3

0.0115

0.0114

0.0115

0.0115

0.0175

0.0115

60

40

3

0.0108

0.0106

0.0108

0.0108

0.0165

0.0108

65

40

3

0.0142

0.0140

0.0142

0.0142

0.0216

0.0142

70

40

3

0.0179

0.0177

0.0179

0.0179

0.0272

0.0179

75

50

3

0.0169

0.0166

0.0169

0.0169

0.0258

0.0169

80

50

3

0.0211

0.0208

0.0211

0.0211

0.0322

0.0211

85

55

3

0.0228

0.0224

0.0228

0.0228

0.0346

0.0228

90

55

3

0.0275

0.0271

0.0275

0.0275

0.0419

0.0275

95

55

3

0.0325

0.0322

0.0325

0.0325

0.0495

0.0325

100

60

3

0.0347

0.0343

0.0347

0.0347

0.0528

0.0347

110

60

3

0.0461

0.0456

0.0461

0.0461

0.0701

0.0461

120

60

3

0.0585

0.0581

0.0585

0.0585

0.0891

0.0585

130

60

3

0.0721

0.0716

0.0721

0.0721

0.1097

0.0721

140

70

3

0.0797

0.0791

0.0797

0.0797

0.1212

0.0797

150

70

3

0.0954

0.0948

0.0954

0.0954

0.1451

0.0954

160

80

3

0.1040

0.1033

0.1040

0.1040

0.1583

0.1040

170

80

3

0.1219

0.1212

0.1219

0.1219

0.1855

0.1219

180

80

3

0.1409

0.1401

0.1409

0.1409

0.2144

0.1409

190

90

3

0.1517

0.1508

0.1517

0.1517

0.2309

0.1517

200

90

3

0.1729

0.1719

0.1729

0.1729

0.2631

0.1729

210

100

3

0.1848

0.1836

0.1848

0.1848

0.2812

0.1848

220

100

3

0.2081

0.2069

0.2081

0.2081

0.3167

0.2081

230

120

3

0.2086

0.2069

0.2086

0.2086

0.3175

0.2086

240

120

3

0.2341

0.2324

0.2341

0.2341

0.3562

0.2341

250

120

3

0.2607

0.2590

0.2607

0.2607

0.3967

0.2607

260

120

3

0.2883

0.2866

0.2883

0.2883

0.4387

0.2883

270

130

3

0.3035

0.3015

0.3035

0.3035

0.4618

0.3035

280

130

3

0.3333

0.3313

0.3333

0.3333

0.5072

0.3333

290

140

3

0.3495

0.3472

0.3495

0.3495

0.5319

0.3495

300

200

3

0.2710

0.2662

0.2710

0.2710

0.4123

0.2710

350

200

3

0.4471

0.4424

0.4471

0.4471

0.6803

0.4471

400

300

3

0.3793

0.3687

0.3793

0.3793

0.5773

0.3793

450

300

3

0.6096

0.5990

0.6096

0.6096

0.9277

0.6096

500

350

3

0.6909

0.6765

0.6909

0.6909

1.0514

0.6909

550

400

3

0.7722

0.7534

0.7722

0.7722

1.1751

0.7722

600

400

3

1.0838

1.0650

1.0838

1.0838

1.6493

1.0838

650

500

3

0.9348

0.9053

0.9348

0.9348

1.4225

0.9348

700

500

3

1.3006

1.2711

1.3006

1.3006

1.9791

1.3006

750

600

3

1.0974

1.0550

1.0974

1.0974

1.6699

1.0974

800

600

3

1.5173

1.4749

1.5173

1.5173

2.3090

1.5173

850

600

3

1.9644

1.9220

1.9644

1.9644

2.9893

1.9644

900

700

3

1.7341

1.6764

1.7341

1.7341

2.6389

1.7341

950

700

3

2.2354

2.1776

2.2354

2.2354

3.4017

2.2354

1000

700

3

2.7637

2.7060

2.7637

2.7637

4.2057

2.7637

2000

1000

3

16.2573

16.1395

16.2573

16.2573

24.7393

16.2573

Remark:

1. Thickness according skived PTFE Sheet,  0.1mm, 0.5mm, 1mm, 2mm, 5mm, up to 1000mm. Etc.

2. PTFE Gasket 's OD and ID accoring customer's requirements 

 

PTFE  GASKET  DATA SHEET

PTFE GASKET and Filled PTFE GASKET  Property

Property

Unit

PTFE

PTFE  + FiberGlass

PTFE  + Graphite

PTFE  + Carbon

PTFE  + Bronze

PTFE + Aramid 

Density

g/m³ 

2.16~2.25

2.2~2.26

2.10~2.16

2.11~2.17

3.0~4.0

 

Long Term Working Temperature

°C

200~ 260

200~ 260

200~ 260

200~ 260

200~ 260

 

Max Short Tem

°C

310

310

310

310

310

 

Meltint Point

°C

327

327

327

327

327

 

Tensile Strength

Mpa

25~40

19~25

15~20

14~23

18~29

 

Yield Strength

Mpa

 

8~14

9~18

10~20

8~15

 

Hardness

Mpa

>65

64

59

68

67

 

Flammability Oxygen

%

530

530

530

630

530

 

Elongation at Break

%

280~450

240~330

150~250

70~150

200~320

 

Flexural Modulus

Mpa

490

720

780

960

745

 

Volume Resistibity

Ohm.m

10 16

 

 

 

 

 

Weather Resistance

Ohm.m

10 16

 

 

 

 

 

Impact Strength

KJ/m²

150

130

150

70

150

 

Food Grade

 

Yes

Yes

Yes

Yes

Yes