Polytetrafluoroethylene, Filled

Poly­te­tra­flu­o­roeth­yl­ene (PTFE), filled [Rulon®]


  • Fam­ily of rein­forced pro­pri­etary PTFE compounds
  • High com­pres­sive strength
  • Low coef­fi­cient of friction
  • Abra­sion– and corrosion-resistant
  • Requires no lubrication
  • No “slip stick,” or erratic motion at low speeds
  • Rulon LR can be bonded to any sur­face to pro­vide wear resis­tance and reduce fric­tion. Maroon in color.
  • Rulon J is ideal for alu­minum and soft-mating sur­faces, pro­vid­ing the low­est coef­fi­cient of fric­tion of all Rulons. Muted gold in color.
  • Rulon 641 is an FDA-compliant mate­r­ial for food and drug appli­ca­tions. White in color.
  • Rulon AR offers the best com­bi­na­tion of flex­i­bil­ity and load-carrying prop­er­ties. Maroon in color.
  • Rulon 142, made for extremely heavy loads, is etched on one side for adhe­sive bond­ing to steel sub­strate. Turquoise with a bronze tint.
  • Rulon 123 is FDA-compliant and ideal for wet or sub­merged appli­ca­tions. Black in color.
  • Other Rulon grades are avail­able for harsher con­di­tions. Con­tact us for details.

Com­mon uses

  • Bear­ing and seal applications
  • Food and drug applications
PTFE- Rulon

PTFE– (Rulon)

Mate­r­ial Specifications

ASTM or UL test Prop­erty Value
D792 Den­sity (lb/in3)/(g/cm3) 0.070–0.082 (1.95–2.27)
D570 Water absorp­tion, 24 hrs (%) 0
D638 Ten­sile strength (psi) 1,500–2,000
D638 Ten­sile mod­u­lus (psi) -
D638 Ten­sile elon­ga­tion at yield (%) 150–180
D790 Flex­ural strength (psi) -
D790 Flex­ural mod­u­lus (psi) -
D785 Hard­ness, Shore D 60–75
D256 Izod notched impact (ft-lb/in) 6.0
D696 Coef­fi­cient of lin­ear ther­mal
expan­sion (x 10–5 in./in./°F)
4.9 x 10–5
D648 Heat deflec­tion temp (F°/C°) at 264 psi -
D3418 Melt­ing temp (F°/C°) -
- Max oper­at­ing temp (F°/C°) 500/260
C177 Ther­mal con­duc­tiv­ity
UL94 Flam­ma­bil­ity rating -
D150 Dielec­tric con­stant at 1 MHz 2.4–2.5
D150 Dis­si­pa­tion fac­tor at 1 MHz 0.001–0.003
D150 Dielec­tric strength (V/mil) -
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 1.0 x 1015–8.0 x 1018

These are typ­i­cal val­ues for ref­er­ence and com­par­i­son only. They should not be used as a basis for design spec­i­fi­ca­tions or qual­ity con­trol. Con­tact us for the man­u­fac­tur­ers’ com­plete mate­r­ial prop­erty datasheets. All val­ues were taken at 73°F (23°C) unless oth­er­wise noted.

Don’t see what you’re look­ing for? Call us at 800–423-2769 or email us at tom@crownplasticsinc.com.