Tetrafluoroethylene Propylene (TFE/P) O-Rings

Tetrafluoroethylene Propylene (TFE/P) O-Rings Material Description:

Tetrafluoroethylene Propylene (TFE/P) o-rings are a copolymer made up of tetrafluoroethylene (TFE) and propylene. TFE/P has excellent resistance to ozone and weathering along with a wide range of chemicals, including acid, base, and steam. A reliable choice for applications that work in tough environments. Applications include Automotive engine coolants, motor oils, some brake fluids, and steering fluids; food and pharmaceutical applications, wide temperature range from -40° C to +200° C with special formulations to 250° C. Disadvantages include high compression set and extrusion resistance especially at high temperatures.

PTFE orings are rigid and offer little elasticity. Low frictions reduces wear and is impervious to many chemicals. It offers good high temperature protection in addition to its high pressure capability. PTFE o-rings can be formulated with fillers to add to the charachteristics needed for your application.

Engineered Seal Products has the expertise and inventory for your tetrafluoroethylene propylene (TFE/P) o-ring applications. For over 50 years, ESP has been the leading engineering, quality, and supply chain choice for both standard and custom sealing applications. A seal, no matter the application, has to do just that.

Also Know As:


Tetrafluoroethylene Propylene (AFLAS) Advantages:
  • Wide range of chemical compatibility
  • Wide temperature range from -40° C to +200° C with special formulations to 250° C
  • Excellent ozone and weathering resistance

Compatible with:

  • Phosphate Esters
  • Amines
  • Steam and hot water
  • Automotive engine coolants
  • Motor oils
  • Steering fluids and some brake fluids
Tetrafluoroethylene Propylene (AFLAS) Disadvantages:
  • High compression set
  • Low extrusion resistance especially at high temperatures
  • Moderate with cold temp formulations to as low as -40° C

Tetrafluoroethylene Propylene (AFLAS) Material Properties

Tetrafluoroethylene Propylene (AFLAS) Material Temperature Range:

Heat Resistance: Up to approximately 450°F (232°C)

Cold Flexibility: Down to approximately 15°F (-9°C).

Normal Recommended Temperature Range Normal recommended temperature range

Extended Temperature Range Extended Temperature Range for short term only

PDF O-Ring Temperature Range Chart

Abrasion Resistance Good/Excellent
Chemical Resistance Excellent
Cold Resistance Poor
Heat Resistance Excellent
Oil Resistance Excellent
Ozone Resistance Excellent
Tensile Strength Fair/Good
Water/Steam Resistance Good/Excellent

Material properties & Temp ranges based on Parker o-Ring Handbook (ORD 5700) recommendations.

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ASTM Designation
Shelf Life
25 Years
Hardness (Shore A) Range
60 - 90

Temperature ranges will apply to the majority of media for which the material is potentially recommended. With some media however, the service temperature range may be significantly different. ALWAYS TEST UNDER ACUTAL SERVICE CONDITIONS.

ESP’s shelf life recommendation is based on the ARP 5316 standard and intended to be utilized by those organizations who do not already have specific recommendations for the control of elastomeric seals. It should be noted that the packaging of the elastomeric seals prior to assembly into a product is an integral part of the controlled storage procedure. It provides a positive means of product identity from the time of manufacture, to the time of assembly.