PTFE (Polytetrafluoroethylene) Sheets

PTFE (Polytetrafluoroethylene)

PTFE is truly a unique material and still the most widely used of all the fluoropolymers. PTFE has a combination of chemical, electrical and thermal performance unmatched by any other commercially available material.

PTFE is available in sheets, rods, tubes and plates; as well as various different grades of PTFE. Other forms of PTFE available include: Mica filled PTFE, glass filled PTFE, PTFE electrical sleeving and PTFE Skived Tapes.

PTFE Characteristics

Outstanding chemical resistance
Superb electrical insulating properties
A wide working temperature range from 260°C down to liquid nitrogen temperatures (-260°C)
And a very low coefficient of friction, resulting in unique non-stick behaviour
High dielectric properties
Non-toxic

PTFE Applications

Bearings
Cell lids
Insulators
Seal rings
Wear rings
Valve seats
Frictions pads
Lantern rings

Availability

.	Round Rods (mm)	Sheet / Plates (mm)	Tubes O.D. (mm)
Extruded PTFE	4 - 90	0.25 - 60	9 - 120
Moulded PTFE	50 - 505	N/A	65 - 600
PTFE Thin Wall Tubing	N/A	N/A	2 - 28
PTFE Skived Tapes	N/A	N/A	0.05 - 5
PTFE Spaghetti Tubing	N/A	N/A	On Application
PTFE Spaghetti & Electrical Sleeving	N/A	N/A	On Application

Please note: Certain sizes are non-standard and are generally not available from stock but manufactured to order. For further information, please call the sales team on 0191 258 0777.

PTFE sheet and tape can be given an etched surface suitable for adhesive bonding.

PTFE filled grades offer a range of materials that expand on the properties of PTFE

PTFE Virgin, unfilled
Fluorosint 500 proprietary, mica filled PTFE
Fluorosint 207 proprietary, mica filled PTFE
GL15 15% Glass filled PTFE
GL25 25% Glass filled PTFE
C35 35% Carbon filled PTFE
B60 60% Bronze filled PTFE
BM555 55% Bronze + 5% Molybdenum Disulphide filled PTFE

Improved material properties can be achieved by the addition of selected fillers. These fillers extend performance characteristics and allow for wider application - particularly in demanding thermal stability and load support situations. In addition, the frictional and thermal properties of PTFE remain generally unaffected.

The glass-filled grades, GL25 and GLI5 , show improved wear and creep resistance compared with unfilled PTFE, while the chemical resistance is virtually unaffected. B60, a bronze filled compound, has a high thermal conductivity resulting in excellent bearing properties at high speeds, particularly where unhardened shafts are used. BM555, a PTFE containing bronze and MoS2, has been designed for low friction, low wear applications such as piston rings and bearings.

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PTFE Selection Guide, PTFE Additives and Benefits

Fluorosint (See also advance engineering plastic materials Fluorosint)