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PTFE & Filled PTFE

PTFE & Filled PTFE Selection Guide
PTFE & Filled PTFE
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PTFE is available in virgin & filled compounds to improve the basic characteristics to match very diverse applications & optimization for specific end users.

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 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.

3

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

4

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.

5

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.

6

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.
7

Aluminium Oxide filled PTFE

5- 10 No
  • Excellent electrical properties
  • Excellent  compressive strength
  • Excellent wear resistance improved under load & permanent deformation

Electrical insulators in circuit breaker

8

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.
9

Stainless Steel filled PTFE

5- 10

 

No
  • Excellent chemical resistance
  • Outstanding mechanical properties
  • Good wear resistance

 

High Pressure chemical handling equipments.

10

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.

11

Glass + MoS2 filled PTFE

15 + 5 Yes
  • High compressive strength
  • Excellent chemical resistance
  • Improved wear resistance under load & permanent deformation
  • Improved frictional properties
Low torque valve components
12 Pigmented PTFE   No
  • Improved Visibility

Colour  coded electrical  cable sheathings