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Rulon Bearings

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Saint-Gobain Rulon® E Bearing/Seal PTFE  (discontinued **)
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. PTFE = polytetrafluoroethylene

E Grade Bearing/Seal PTFE: Lowest deformation at elevated temperatures of any Rulon. Gray in color. Material does not have thermal or 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 PropertiesOriginal ValueComments
Density 2.26 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 65
Tensile Strength, Yield 2000 psi
Elongation at Break 100 %
Tensile Modulus 240000 psi
Flexural Strength 600 psi
Compressive Yield Strength 1000 psiMax load under tribological use
 1500 psi
@Strain 10 %
Izod Impact, Notched 6.00 ft-lb/in
Coefficient of Friction, Dynamic 0.25Dry vs. Steel
Coefficient of Friction, Static 0.20Dry vs. Steel
Limiting Pressure Velocity 10000 psi-ft/min
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+14 ohm-cm
Dielectric Constant 2.5
@Frequency 1e+6 Hz
Dielectric Strength 275 kV/inShort Term
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity 2.80 BTU-in/hr-ft²-°F
Deflection Temperature at 1.8 MPa (264 psi) 250 °F
 
Descriptive Properties
ColorGrey

**
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PSTGQZ178 / 68692

Rulon Bearings

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