Fluoroplastics feature exceptional properties
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FTL Seals Technology product story
Edited by the Engineeringtalk editorial team
Jun 5, 2008
PTFE engineered parts exhibit almost universal chemical resistance over a wide temperature range.
FTL Technology produces a wide variety of PTFE engineered parts.
PTFE is a linear polymer from carbon and fluorine with exceptional properties.
The extremely stable combination of fluorine and carbon atoms and the almost complete shielding of the carbon chain by the fluorine atoms give PTFE nearly universal chemical resistance.
Only hydrocarbon combinations containing fluorine and melted alkali metals cause PTFE to swell or produce a limited chemical reaction on the surface.
Even after prolonged storage, no water absorption can be noted.
In extreme climatic conditions PTFE shows nearly unlimited weather resistance.
PTFE's good physiological properties are also worthy of particular mention.
PTFE can be used over a wide temperature range from -200 to +300C, and components manufactured from PTFE exhibit good sliding properties even in dry-running conditions.
Indeed, of all solids, PTFE has the lowest coefficients of friction.
The static and dynamic coefficients of friction are nearly identical, which means that there is no stick-slip effect with PTFE even at very low sliding speeds.
PTFE has very low adhesion.
This is due to the strong bond between the carbon chain and the fluorine atoms and their low polarisation capabilities.
PTFE is difficult to wet, but following a chemical pretreatment it is suitable for gluing with good adhesive bonding.
PTFE has outstanding electric insulation properties which are nearly constant across a wide temperature range.
Added to this is a very low relative permittivity combined with a low dielectric loss factor.
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Contact FTL Seals Technology
Tel +44 113 252 1061
Other FTL Seals Technology stories
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Bearings suit high-temperature applications
FTL Seals can supply Graphalloy bearings to avoid problems that arise with traditional bearings when coping with high heat and heavy loads. -
FTL supplies Elringklinger PTFE seals
Elringklinger's PTFE seals are manufactured with outside diameters of up to 2,880mm from a choice of more than 600 PTFE compounds. -
Precision mouldings available from FTL
FTL Technology offers specialist precision mouldings in a range of elastomers, including organic and inorganic elastomers such as silicone, fluorosilicone and liquid silicone. -
FTL releases Mechanical Face Seal Design Guide
FTL Technology has announced the availability of its Mechanical Face Seal Design Guide. -
FTL develops Polytetrafluoroethylene products
FTL has used PTFE (Polytetrafluoroethylene) to develop technical solutions for many areas of application including seals, guides, design components, tubings and semi-finished products.
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