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Rulon Bearings

Saint-Gobain Rulon® 945 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

945 Grade Bearing/Seal PTFE: Extremely low deformation under load, and High impact resistance. Black in color. Material does not have thermal and electrical insulating properties. Suitable for use in steam, wet, dry, or vacuum environments. Rc 35 or higher steel mating surface.
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 1.90 g/cc0.0686 lb/in³ASTM D792
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 20.7 MPa3000 psiASTM D638
Elongation at Break 20 %20 %ASTM D638
Compressive Yield Strength 6.89 MPa1000 psiMax load under tribological use
Coefficient of Friction, Dynamic 0.20 - 0.350.20 - 0.35Dry vs. Steel
Coefficient of Friction, Static 0.20 - 0.350.20 - 0.35Dry vs. Steel
Limiting Pressure Velocity 0.350 MPa-m/sec10000 psi-ft/min
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 50.4 µm/m-°C
@Temperature 25.6 - 93.3 °C
28.0 µin/in-°F
@Temperature 78.0 - 200 °F
Length
CTE, linear, Transverse to Flow 128 µm/m-°C
@Temperature 25.6 - 93.3 °C
71.0 µin/in-°F
@Temperature 78.0 - 200 °F
Diameter
Thermal Conductivity 0.692 W/m-K4.80 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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PSTGQZ180 / 68694

Rulon Bearings

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