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-filled PTFE

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-filled PTFE

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-filled PTFE

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

Aromatic Polyester (Polymer)-filled PTFE

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

Bronze / Moly-filled PTFE

PCI 55 BZ 5 SM LF

2500

110

3.65

62

2.0

3.9

0.13

0.09

5

PCI 55 BZ 5 SM FF

1885

65

3.50

1200

Glass / Moly-filled PTFE

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-filled PTFE

PCI 25C/GR LF

2100

110

2.07

61

2.0

5.9

0.9

0.08

6

PCI 25C/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-filled PTFE

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-filled PTFE

PCI 25 GR LF

1900

75

2.08

Bronze-filled PTFE

PCI 40 BZ LF

3800

260

3.10

60

PCI 40 BZ FF

3160

215

3.10

1100

Stainless Steel-filled PTFE

PCI 50 SS FF

2100

200

3.30

1100

Molybdenum Disulfide (MoS2) -filled PTFE

PCI 5 M LF

4300

280

2.22

Wollastonite-filled PTFE

PCI 15 Min LF

3800

325

2.23

60

PCI 15 Min FF

2500

240

2.28

680

Carbon Fiber-filled PTFE

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

Aromatic Polyester (Polymer)-filled PTFE

PCI 15 EK FF

2400

245

1.99

730

PCI 25 EK LF

1700

190

1.88

Polymide (Polymer)-filled PTFE

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-filled PTFE

PCI 40 BZ 5 M LF

3000

165

3.12

56

Glass / Graphite-filled PTFE

PCI 15 FG 5 GR LF

2700

240

2.18

56

PCI 15 FG 5 GR FF

2500

225

2.18

750

56

Glass / Moly-filled PTFE

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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