Material Information

Rulon® is the brand name for Saint Gobain’s reinforced PTFE. Filled PTFE offers a combination of high compressive strength, a low coefficient of friction, chemical resistance, electrical insulation, and excellent abrasion and corrosion resistance without the need for lubrication. These materials can run from -400º F to 500º F with or without lubrication, which makes them ideal for use in bearings or seals. Rulon® material specifically is known to have the unique property of no “slip stick”, which means it has no erratic motion at low speeds.

Rulon® LR is the most widely used grade of Rulon®. It offers high wear resistance, low friction, good electrical properties, and chemical inertness. It can be bonded to nearly any surface to provide wear resistance and reduce friction. This makes Rulon® LR a great material for sleeves and flange or thrust bearings. It is available in a maroon color in the forms of strip, rod, and tube.


  • Flange or thrust bearings
  • Sleeves
  • Washers
  • Seals
  • Piston cups


  • Chemical inertness
  • Compatible with most hardened steel substrates
  • Good load carrying properties
  • High wear resistance
  • Low friction
  • Good electrical insulator
  • No slip-stick


Astm Test Method

Rulon® AR

Rulon® LR

Rulon® J

Density (lb/in^3) D792 0.081 0.082 0.07
Specific Gravity D792 2.24 2.27 1.95
Water Absorption @ 24 hours (%) D570 0 0 0
Hardness, Shore D D2240 60-75 60-75 60


Tensile Strength (PSI) D1457 2,000 1,500 2,000
Tensile Elongation at Yield (%) D1457 175 150 180
Izod Impact (Notched), ft-lb/in D256 6 6


Coefficient of Thermal
Expansion, 10^-5/°F
D696 Varies with temp Varies with temp Varies with temp
Continous Service Temp (Operating), °F  – 500 500 500
Flammability Rating UL94 None None None


Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 400-500 400-500 200
Volume Resistivity (ohm-cm) @ 50% RH D257 1.0 x 10^15 1.0 x 10^15 8.0 x 10^18
Dielectric Constant at 1 MHz D150 2.5 2.5 2.4
Dissipation Factor at 1 kHz D150 0.003 0.003 0.001


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.