TFE FLUOROCARBON Teflon®

Teflon® FLUOROCARBON Key Facts

There are several basic members of the fluorocarbon (or fluoroplastics, as they are sometimes called) family. Most widely known are: polytetrafluoroethylene {PTFE) and polytrifluoro­-chloroethylene (CTFE).

A newer variation is fluorinated ethylene propylene (FEP) which exhibits many of the same properties as PTFE, but has the added advantage that it can be processed in conventional thermoplastics equipment. Newer still is vinylidene fluoride, a flurocarbon that offers excellent chemical resistance, inertness to moisture, weathering, and oxidation, and retention of physical properties within a temperature range of -80 to 300° F.

Teflon® (polytetrafluoroethylene PTFE) is among the more expensive fluorocarbons. Design engineers have found Teflon® to be adaptable to a variety of requirements because it offers a unique combination of heat resistance, low friction, and good chemical and electrical properties. Fluorocarbons can be used over a wide temperature range, from as low as -0° F to as high as 500°F.

Parts fabricated with PTFE resins exhibit high strength, toughness, and self-lubrication at low temperatures. These fluorocarbon resins are virtually unaffected by most chemicals. Teflon® also exhibits the lowest dielectric constants and lowest dissipation factors of all solid materials.

Key Properties of Teflon® FLUOROCARBON

Chemical Properties

  • Resistance to corrosive reagents
  • Non-solubility
  • Long-term weatherability
  • Non-adhesiveness
  • Non-flammability

Electrical Properties

  • Low dielectric constant
  • Low dissipation factor
  • High arc resistance
  • High surface resistivity
  • High volume resistivity

Mechanical properties

  • Flexibility at low temperatures
  • Low coefficient of friction
  • Stability at high temperatures

Applications of Teflon® FLUOROCARBON

VALVE COMPONENTS

  • V-rings
  • Cup-and-cone packings
  • Solid ring packings
  • O-rings
  • Seals
  • Plugs
  • Sleeves
  • Inserts
  • Swivels
  • Seals

GASKETS

  • Solid gaskets
  • Envelope gaskets
  • Bonnet gaskets

PUMP COMPONENTS

  • Bearings
  • Thrust washers
  • Shaft packing seals
  • Seal faces
  • Seal rings
  • Cup seals
  • Pistons
  • Piston rings
  • Piston packing

OTHER CHEMICAL EQUIPMENT

  • Dip tubes
  • Backup rings
  • Seal rings for pipe flanges
  • Seal rings for plastic pipes
  • Seal rings for threaded fittings
  • Solid pipe
  • Tees
  • Elbows
  • Adapters
  • Cups
  • Containers
  • Anti-stick linings
  • Stirring rods (laboratory)
  • Baffles
  • Rotameter components
  • Separators
  • Stopcocks
  • Distillation tower packing

MECHANICAL COMPONENTS

  • Bearings
  • Seals
  • Rings
  • Conveying rollers
  • Door slides
  • Skids
  • Washers

ANTISTICK USES

  • Bread-sheeting rolls
  • Heat-sealer plates
  • Guides, hoppers, and dead plates in packaging machinery
  • Snow-plow blades
  • Dirt-plow blades

TAPE-WRAPPED WIRE

  • Hook-up
  • Distribution and power transformers
  • Aircraft, integral and fractional motors
  • Coaxial cable for radar and television
  • High-voltage wiring
  • High-temperature wiring spacers for coaxial cable

MOTORS AND GENERATORS

  • Coil wrappers
  • Slot liners
  • Coils (taping)
  • Coil separators
  • Conductor insulation for armature or field TRANSFORMERS AND COILS
  • Conductor, layer, and ground insulation
  • Coil separators

ELECTRONICS EQUIPMENT

  • Inserts for coaxial connectors
  • Coaxial spacers
  • Bases for subassemblies
  • Terminals
  • Standoff and feedthrough insulators
  • Layer insulation
  • Coil separators
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