Wednesday, 25 April 2018

Technical

 

Common properties for selecting compounds

 Properties Bronze Carbon  Carbon Fiber Ceramic Ceramer Ekonol Glass Fiber Graphite Mineral Molybdenum Polymide Stainless Steel 
 Chemical Agent Resistance      X X X  X X X X   X  X 
 Compression Resistance  X X X X     X   X     X 
 Deformation Under Load X X X X     X   X     X 
 Electrical Insulation       X X X X       X  
 High Temperature Resistance X X X X X X X X X   X X
 Low Coefficient of Friction       X X X   X X X X  
 Lubrication         X X   X X X X  
 Thermal Conductivity X X           X       X
 Thermal Stability X X X X X X X X X   X X
 Wear Resistance X X X   X X X X X X X X

 

Typical applications/end uses

 Applications Bronze Carbon  Carbon Fiber Ceramic Ceramer Ekonol Glass Fiber Graphite Mineral Molybdenum Polymide Stainless Steel 
Compressor Rings X X X   X  X X X X X X X
Gaskets   X X     X X X X X    
Piston Rings & Seals             X X   X X  
Plates & Bars X X         X X X      
Sealing Elements X X     X X     X X X X
Bearings X X  X    X X X X   X X  
Valve Seats X X    X      X X X X    

 

Typical properties of filled PTFE compounds

Filler

Description

Tensile Strength

Elongation

Specific Gravity

Bulk Density

Hardness

Deformation Under Load

Coefficient of Thermal Expansion

Coefficient of Friction - Static

Coefficient of Friction - Dynamic

Dielectric Strength

Wear Factor

K x 10-10

Test Method

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D2240

ASTM D621

ASTM D696

ASTM D1894

ASTM D1894

ASTM D149A

 

Units

psi

%

g/cc

g/l

Shore D

%

In/in/°F x 10-5

     

In3-min/lb-ft-hr

None

Virgin PTFE

6000

350

2.15

400

58

7.9

6.8

0.09

0.07

1500

15,000

PCI UNF LF pigmented

5000

340

2.16

--

58

7.3

6.5

0.07

0.06

--

--

Glass

PCI 10 FG LF

4000

310

2.20

--

55

6.1

6.3

0.04

0.07

--

--

PCI 15 FG LF

3400

290

2.23

350

59

4.1

5.7

0.09

0.05

430

7

PCI 15 FG FF

2700

250

2.23

780

PCI 15 FG LF pigmented

3000

250

2.22

350

58

4.1

5.7

0.09

0.05

430

6

PCI 25 FG LF

2950

265

2.24

385

60

3.9

4.3

0.12

0.07

320

6

PCI 25 FG FF

2000

200

2.24

785

PCI 25 FG LF pigmented

2500

220

2.23

350

58

3.9

4.3

0.12

0.07

320

6

Graphite

PCI 10 GR FF

2800

220

2.16

730

--

5.8

6.8

0.05

0.07

 

44

PCI 15 GR LF

3000

210

2.16

--

63

2.5

5.9

0.07

0.05

60

30

PCI 15 GR FF

2000

160

2.16

695


Bronze

PCI 60 BZ LF

2500

175

3.95

--

67

2.3

4.3

0.13

0.07

--

5

PCI 60 BZ FF

2450

105

3.91

1350

Polymer (Aromatic Polyester)

PCI 10 EK LF

3200

325

2.05

--

56

3.2

6.4

0.09

0.05

--

5

PCI 10 EK LF

3200

325

2.05

--

  

Filler

Description

Tensile Strength

Elongation

Specific Gravity

Bulk Density

Hardness

Deformation Under Load

Coefficient of Thermal Expansion

Coefficient of Friction - Static

Coefficient of Friction - Dynamic

Dielectric Strength

Wear Factor

K x 10-10

Test Method

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D2240

ASTM D621

ASTM D696

ASTM D1894

ASTM D1894

ASTM D149A

 

Units

psi

%

g/cc

g/l

Shore D

%

In/in/°F x 10-5

     

In3-min/lb-ft-hr

Bronze / Moly

PCI 55 BZ 5 SM LF

2500

110

3.65

--

62

2.0

3.9

0.13

0.09

--

5

Bronze / Moly

PCI 55 BZ 5 SM FF

1885

65

3.50

1200


Glass / Moly

PCI 15 FG 5 M LF

3300

220

2.24

--

63

3.8

5.2

0.06

0.04

--

9

PCI 15 FG 5 M FF

2600

190

2.24

785


Carbon / Graphite

PCI 25C/GR LF

2100

110

2.07

--

61

2.0

5.9

0.09

0.08

--

6

PCI 25 C/GR FF

1900

90

2.08

700

Proprietary

PCI Tuffsheet® LF

2100

150

2.04

275

64

--

--

--

0.21

--

54

 

Filler

Description

Tensile Strength

Elongation

Specific Gravity

Bulk Density

Hardness

Test Method

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D2240

Units

psi

%

g/cc

g/l

Shore D

Carbon

PCI 10 C LF

3300

255

2.11

--

--

PCI 25 C LF

2200

85

2.05

--

65

PCI 30 C LF

1700

55

2.03

--

70

Graphite

PCI 25 GR LF

1900

75

2.08

--

--

Bronze

PCI 40 BZ LF

3800

260

3.10

--

60

PCI 40 BZ FF

3160

215

3.10

1100

Stainless Steel

PCI 50 SS FF

2100

200

3.30

1100

--

Molybdenum Disulfide

PCI 5 M LF

4300

280

2.22

--

--

Wollastonite

PCI 15 Min LF

3800

325

2.23

--

60

PCI 15 Min FF

2500

240

2.28

680

Carbon Fiber

PCI 10 CF LF

3800

280

2.08

--

--

PCI 10 CF FF

2325

275

2.08

695

PCI 15 CF LF

3250

250

2.03

--

61

PCI 15 CF FF

2580

220

2.02

700

Polymer (Aromatic Polyester)

PCI 15 EK FF

2400

245

1.99

730

--

PCI 25 EK LF

1700

190

1.88

--

--

 

Filler

Description

Tensile Strength

Elongation

Specific Gravity

Bulk Density

Hardness

Test Method

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D4745

ASTM D2240

Units

psi

%

g/cc

g/l

Shore D

Polymer (Polyimide)

PCI 10 PI LF

3250

250

2.02

--

59

PCI 15 PI LF

2580

235

1.95

--

60

PCI 20 PI LF

1450

140

1.88

--

63

Bronze / Moly

PCI 40 BZ 5 M LF

3000

165

3.12

--

56

Glass / Graphite

PCI 15 FG 5 GR LF

2700

240

2.18

--

56

PCI 15 FG 5 GR FF

2500

225

2.18

750

Glass / Moly

PCI 21 FG 2 M LF

2700

225

2.25

--

60

Proprietary

PCI Bearing Comp 213

3400

270

2.22

350

63

 

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