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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


PhysicalAstm Test MethodRulon® ARRulon® LRRulon® J
Density (lb/in^3)D7920.0810.0820.07
Specific GravityD7922.242.271.95
Water Absorption @ 24 hours (%)D570000
Hardness, Shore DD224060-7560-7560
Tensile Strength (PSI)D14572,0001,5002,000
Tensile Elongation at Yield (%)D1457175150180
Izod Impact (Notched), ft-lb/inD25666
Coefficient of Thermal
Expansion, 10^-5/°F
D696Varies with tempVaries with tempVaries with temp
Continous Service Temp (Operating), °F500500500
Flammability RatingUL94NoneNoneNone
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
Volume Resistivity (ohm-cm) @ 50% RHD2571.0 x 10^151.0 x 10^158.0 x 10^18
Dielectric Constant at 1 MHzD1502.52.52.4
Dissipation Factor at 1 kHzD1500.0030.0030.001

Disclosure: 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.


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