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Rulon Bearings

Saint-Gobain Rulon® W2 Bearing/Seal PTFE
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)

Material Notes: Description: 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. PTFE = polytetrafluoroethylene

W2 Grade Bearing/Seal PTFE: Specifically developed for fresh water bearing and seal applications, Rulon W2 has the lowest wear rate in wet environment of any standard Rulon. Black in color. Suitable for wet, dry, or vacuum environments. Mating surface of Rc 25 or higher steel/stainless steel. Material does not have electrical and thermal insulation properties. Markets for W2 grade include Appliances, Automotive, 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 PropertiesMetricEnglishComments
Density 2.10 g/cc0.0759 lb/in³ASTM D792
Water Absorption 0.00 %
@Time 86400 sec
0.00 %
@Time 24.0 hour
ASTM D570
Deformation 3.0 %
@Pressure 10.3 MPa
3.0 %
@Pressure 1490 psi
24 hrs; ASTM D621
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell 6464
Hardness, Rockwell B 2525
Tensile Strength 12.4 MPa1800 psiASTM D638
Elongation at Break 70 %70 %ASTM D638
Compressive Yield Strength  5.90 MPa
@Strain 1 %
856 psi
@Strain 1 %
Mold Direciton; ASTM D695
 6.20 MPa
@Strain 1 %
899 psi
@Strain 1 %
Cross Direciton; ASTM D695
Coefficient of Friction, Dynamic 0.15 - 0.300.15 - 0.30
Coefficient of Friction, Static 0.15 - 0.300.15 - 0.30
Limiting Pressure Velocity 0.350 MPa-m/sec10000 psi-ft/min
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow  108 µm/m-°C
@Temperature 25.6 - 93.3 °C
60.0 µin/in-°F
@Temperature 78.0 - 200 °F
Length
 113 µm/m-°C
@Temperature 25.6 - 149 °C
63.0 µin/in-°F
@Temperature 78.0 - 300 °F
Length
CTE, linear, Transverse to Flow  84.6 µm/m-°C
@Temperature 25.6 - 93.3 °C
47.0 µin/in-°F
@Temperature 78.0 - 200 °F
Diameter
 88.2 µm/m-°C
@Temperature 25.6 - 149 °C
49.0 µin/in-°F
@Temperature 78.0 - 300 °F
Diameter
Thermal Conductivity 0.648 W/m-K4.50 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 288 °C550 °F
Minimum Service Temperature, Air -240 °C-400 °F
 
Descriptive Properties
ColorBlack

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PSTGQZ173 / 68687

Rulon Bearings

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