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Rulon Bearings

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Saint-Gobain Rulon® LR Bearing/Seal PTFE
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)

Material Notes: Rulon® is the Saint-Gobain trade name for their family of proprietary PTFE compounds. This family of materials offers the combination of high compressive strength, low coefficient of friction, and excellent abrasion and corrosion resistance while running without lubrication. They are used in bearing and seal applications from temperature extremes of 400°F to over 500°F with and without additional lubricants. A unique property of Rulon® is the absence of stick slip, that is, erratic low-speed motion.

LR Grade Bearing/Seal PTFE: 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, but it can also be bonded to nearly any surface to provide wear resistance and reduce friction. Maroon in color.

Suitable for use in environments of steam, wet, dry, vacuum. Mating surface of steel/stainless steel Rc 35 and higher. Material has electrical and thermal insulation properties.
Markets for these products include Agricultural, Appliances, Automotive, Document Processing Equipment, Industrial, Transportation
Information provided by Saint Gobain Performance Products.

Vendors: TriStar Plastics Corp. provides engineering, custom fabrication and manufacturing of high-performance plastics and self-lubricating bearing materials, such as Rulon, PEEK, Torlon, CJ Composites and Ultracomp. Capabilities include component design, material selection, prototype and production, manufacturing and surface modification. Call (800) TRI-STAR (800) 874-7827 or visit or www.TStar.com

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Physical PropertiesOriginal ValueComments
Density 2.25 g/ccASTM D792
Water Absorption 0.00 %
@Time 86400 sec
Immersion; ASTM D570
Deformation 3.0 %
@Pressure 10.3 MPa
ASTM D621
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 60 - 70ASTM D2240
Tensile Strength 18.6 MPaASTM D4894
Elongation at Break 235 %ASTM D4894
Flexural Yield Strength 3.80 MPa
@Strain 1 %
ASTM D790
Flexural Modulus 0.410 GPaASTM D790
Compressive Yield Strength 5.20 MPa
@Strain 1 %
ASTM D695
Compressive Modulus 0.550 GPaASTM D695
Limiting Pressure Velocity 0.350 MPa-m/sec
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+15 ohm-cmASTM D257
Surface Resistance 2.00e+13 ohmASTM D257
Dielectric Constant 2.5
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 900 V/mil
@Thickness 2.50 mm
ASTM D149
Dissipation Factor 0.0010 - 0.0040
@Frequency 1e+6 Hz
ASTM D149
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 55.2 µin/in-°F
@Temperature 37.8 °C
Length
 83.0 µin/in-°F
@Temperature 149 °C
Length
CTE, linear, Transverse to Flow 34.4 µin/in-°F
@Temperature 37.8 °C
Diameter
 45.3 µin/in-°F
@Temperature 149 °C
Diameter
Thermal Conductivity 2.30 BTU-in/hr-ft²-°FASTM D2214
Maximum Service Temperature, Air 288 °C
Minimum Service Temperature, Air -240 °C
 
Descriptive Properties
ColorMaroon

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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PSTGQZ168 / 68682

Rulon Bearings

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