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Selection Guide of PTFE

PTFE is available in virgin & filled compounds to improve the basic characteristics to match very diverse applications & optimization for specific end users. The grade of PTFE is selected from Virgin & Filled PTFE grades of PTFE, based on required property for required service conditions / applications. The selection guide elaborates various grades of PTFE & Filled PTFE, filler content in PTFE, basic properties & relevant service conditions / End user applications.

Sr.No. Grade Filler Content by Weight % Standard Series Properties Applications
1 Virgin PTFE - Yes
  • Hygienic
  • Excellent chemical resistance
  • Outstanding electrical properties
  • Excellent flexural properties
 Gaskets, Bellows, food / contact & medicine / human consumption applications
2 Chemically Modified PTFE - Yes
  • Less Creep
  • Improved Permeation Resistance
  • Smoother Surfaces
  • Less Porous
  • Better High Voltage Insulation
  • New Fabricating Versatility with welding
 Pumps, Diaphragms, Ball Valve Seats, Components of Mechanical Seals, Dipped Pipes for reaction vessels, Vessel Lining
3 Pigmented PTFE - No
  • Improved Visibility
 Colour coded electrical cable sheathings
4 Glass filled PTFE 15 - 25 Yes
  • High compressive strength
  • Excellent chemical resistance
  • Improved wear resistance under load & permanent deformation
 Ball valve component, bridge bearing pads, ship launching pads,pipe supporting pads
5 Carbon / Coke filled PTFE (soft amorphous/ hard fiber) 25-35 Yes
  • High compressive strength
  • Improved wear resistance under load & permanent deformation
  • Better thermal / electrical conductivity
 Rider and piston rings of air compressor
6 Graphite filled PTFE (pure crystalline carbon) 15 Yes
  • High compressive strength
  • Improved wear resistance under load & permanent deformation
  • Better thermal / electrical conductivity.
  • Good chemical resistance
  • Improved frictional properties
 Used as shaft bearings and in chemical high speed Chemical pumps
7 Carbon + Graphite + Glass Filled PTFE 12 + 3 + 10 Yes
  • High compressive strength
  • Improved wear resistance under load & permanent deformation
  • Better thermal / electrical conductivity
 Valve component
8 Bronze filled PTFE(oxidising / Non oxidising) 40 - 60 Yes
  • High compressive strength
  • Excellent wear resistance improved under load & permanent deformation
  • Better thermal / electrical conductivity.
  • Good chemical resistance
  • Very low cold flow
 Wear Strips Machine tool liners, hydraulic seals
9 Bronze plus, Molybdenum Disulphide filled PTFE 55 + 5 Yes
  • Improved fictional properties
  • High compressive strength
  • Excellent wear resistance improved under load & permanent deformation
  • Good thermal / electrical conductivity.
  • Very low cold flow
 Hydraulic seals
10 Aluminium Oxide filled PTFE 7 - 15 No
  • Excellentelectrical properties
  • Excellent compressive strength
  • Excellent1 wear resistance improved under load & permanent deformation
 Electrical insulators in circuit breaker
11 Calcium Fluoride filled PTFE 5 - 10 No
  • Excellent chemical resistance
  • Improved wear resistance under load & permanent deformation
  • Excellent compressive strength
  • Good with chemicals that attack glass
 Mechanical seal parts
12 Stainless Steel filled PTFE 5 - 10 No
  • Excellent chemical resistance
  • Outstanding mechanical properties
  • Good wear resistance
 High Pressure chemical handling equipments
13 Mica filled PTFE 5 - 10 No
  • Excellent compressive strength
  • Very low coefficient of thermal expansion
  • Poor tensile properties
 Electrical and thermal insulation pads under compressive loads
14 Glass + MoS2 filled PTFE 5 + 10 Yes
  • Excellent chemical resistance
  • Improved wear resistance under load & permanent deformation
  • Excellent compressive strength
  • Improved frictional properties
 Low torque valve components
15 PEEK Filled PTFE 15 Yes
  • Excellent compressive strength
  • Excellent chemical resistance
  • Outstanding mechanical properties at elevated temp.
  • Good wear resistance
 Chemical Equipment parts requiring good mechanical properties at elevated Temperature
16 MoS2 Filled PTFE 0.1 - 0.2 No
  • Self-lubrication in presence of apolar gas
  • Low friction coeff.
  • Retained high dielectric performance even in presence of improved thermal and electrical conductivity due to the filler
  • Good dimensional stability and not fragile like ceramic
  • Service temperature range from -272 up to +260℃
 Electrical insulators in circuit breaker
17 Borum Nitrite Filled PTFE 10 No
  • Self-lubrication in presence of apolar gas
  • Low friction coeff.
  • Retained high dielectric performance even in presence of improved thermal and electrical conductivity due to the filler
  • Excellent compressive strength
  • Service temperature range from -272 up to +260℃
 Electrical insulators
18 Cobalt Aluminate Filled PTFE 0.3 No
  • Self-lubrication in presence of apolar gas
  • Low friction coeff.
  • Retained high dielectric performance even in presence of improved thermal and electrical conductivity due to the filler
  • Very high compressive strength
  • Service temperature range from -272 up to +260℃
 Electrical insulators

There are many popular filled grades PTFE Products brand named as Trexonn, Turcite B, Rulon AR, Rulon AJ Gold having specific properties, designed for specific service and applications.

Hindustan Nylons manufactures similar grades of PTFE Products branded as Trexonn, Turcite B, Rulon AR, Rulon AJ Gold.

Nonstandard Series can be made available on request subject to minimum quantity