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Rulon ® (Filled PTFE) SpecificationS
GENERAL DESCRIPTION
 Rulon ® is the Saint Gobain Performance Plastics
tradename for a family of reinforced proprietary PTFE compounds. This unique
family of materials offers the combination of high compressive strengths,
low coefficient of friction, and excellent abrasion and corrosion resistance
while running without lubrication. These materials are used in bearing and
seal applications at temperature extremes from -400°F to +500°F (-240°C to
+260°C) with or without additional lubricants. Rulon ®
materials also have the unique property of no "slip stick" --- no erratic
motion at low speeds.
RULON ® GRADES
Rulon ® LR
The best known, most widely used Rulon formulation. Rulon ®
LR has a long reputation for high wear resistance, low friction, good
electrical properties and chemical inertness. Not only does it make a great
sleeve, flange or thrust bearing, it can also be bonded to nearly any
surface to provide wear resistance and reduce friction.
MAROON in color.
Rulon ® J
This is the best Rulon grade for aluminum and soft mating surfaces. Rulon
® J provides the lowest coefficient of friction of
all Rulons, and provides good wear and abrasion resistance. Because this
grade is "all plastic", it can be run on non-ferrous and non-metallic mating
surfaces such as 316 Stainless, brass, and other plastics. It is used in
both bearing and seal applications, but is generally not suitable for use in
alkaline or oxidizing acid solutions. DULL GOLD in
color.
Rulon ® 641
This FDA compliant material was specifically developed for food and drug
applications. Rulon ® 641 is designed to run dry
without any moisture or lubrication. WHITE in color.
Rulon ® AR
This was the first commercially available reinforced PTFE and is still quite
popular. Rulon ® AR offers the best combination of
flexibility and load-carrying properties. It has high wear resistance, low
friction, and good electrically insulative and chemical properties. Since,
its fillers are ceramic in nature, mating surfaces should be RC35 or harder.
It is and used in seals, piston cups, and some bearings.
MAROON in color.
Rulon ® 142
A material for extremely heavy loads. Rulon ® 142
is ideal for linear bearing applications such as slideways in machine tools
and heavy equipment, and may also be used in expansion joints and bridge
pads. This material provides low friction, excellent unlubricated wear
properties and good heat dissipation and is etched one side for adhesive
bonding to the steel substrate. Rulon ® 142
competes with Busak+Shamban's Turcite ® B Slydway
® product.
TURQUOISE in color with a bronze tint.
Rulon ® 123
This FDA compliant material is excellent for wet or submerged applications.
Rulon ® 123 provides excellent service against
soft and non-ferrous mating surfaces. BLACK in color.
NOTE: Other specialized Rulon ® grades are
also available for chemical environments, higher loads, severe wear, or
custom applications. Contact us for more information!
| TYPICAL PROPERTIES of RULON ®
filled PTFE |
| ASTM or UL test |
Property |
Rulon ® LR
(maroon) |
Rulon ® J
(gold) |
Rulon ® 641
(white) |
Rulon ® AR
(maroon) |
| PHYSICAL |
| D792 |
Density (lb/in³)
(g/cm³) |
0.082
2.27 |
0.070
1.95 |
0.081
2.25 |
0.081
2.24 |
| D2240 |
Hardness, Shore D |
60-75 |
60 |
60 |
60-75 |
| D570 |
Water Absorption, 24 hrs (%) |
0 |
0 |
0 |
0 |
| MECHANICAL |
| D1457 |
Tensile Strength (psi) |
1,500 |
2,000 |
2,000 |
2,000 |
| D1457 |
Tensile Elongation at Yield (%) |
150 |
180 |
175 |
175 |
| D256 |
IZOD Notched Impact (ft-lb/in) |
6.0 |
- |
- |
6.0 |
| THERMAL |
| D696 |
Coefficient of Linear Thermal Expansion
(x 10 -5 in./in./°F) |
varies widely
with temperature |
| Cenco-Fitch |
Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10 -4 cal/cm-sec-°C) |
2.30
7.92 |
1.70
5.86 |
2.60
8.96 |
2.30
7.92 |
| D635 |
Flammability (in/min) |
None |
None |
None |
None |
| ELECTRICAL |
| D149 |
Dielectric Strength (V/mil) short time, .08" thick |
400-500 |
200 |
- |
400-500 |
| D150 |
Dielectric Constant at 1 MHz |
2.5 |
2.4 |
- |
2.5 |
| D150 |
Dissipation Factor at 1 MHz |
0.003 |
0.001 |
- |
0.003 |
| D257 |
Surface Resistivity (ohm-cm)at 50% RH |
2 x 10 13 |
6 x 10 18 |
- |
2 x 10 13 |
| D257 |
Volume Resistivity (ohm-cm)at 50% RH |
1 x 10 15 |
8 x 10 18 |
- |
1 x 10 15 |
| RECOMMENDED OPERATING
LIMITS
|
| Maximum Load (psi) |
1,000 |
1,000 |
1,000 |
1,000 |
| Maximum Velocity with No
Pressure (ft/min) |
400 |
400 |
400 |
400 |
| Maximum PV Rating (psi x
ft/min) |
10,000 |
10,000 |
10,000 |
10,000 |
| Maximum Operating Temp (°F /
°C) |
500 / 260 |
500 / 260 |
500 / 260 |
500 / 260 |
| Minimum Operating Temp (°F /
°C) |
-450 / -240 |
-450 / -240 |
-450 / -240 |
-450 / -240 |
| Minimum Mating Surface
Hardness (Rockwell) |
C35 |
B25 |
B25 |
C35 |
NOTE: The information contained herein are typical values intended
for reference and comparison purposes only. They should NOT be used as a
basis for design specifications or quality control. Contact us for
manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
RULON is a registered trademark of Saint-Gobain
Performance Plastics Corporation.
TURCITE is a registered trademark of the Busak+Shamban, Inc.
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