Polytetrafluoroethylene (PTFE) are closed,circular rings with annular cross section. The dimensions are – as with the elastomer O-Ring – characterised by the inside diameter ID and the cord diameter W (Figure ).PTFE O-Rings are not moulded but produced by machining. The rings can therefore be manufactured in all sizes.
Standard Size: AS568, GB3452.1, J ISB2407
Mediai: Practically all liquids, gases and chemicals
Very good chemical resistance, compatible with most liquids and chemicals, with the exception of liquid alkaline metals and some fluorine compounds.
Suitable for contact with foodstuffs, pharmaceutical and medicinal products.
Physiologically safe, can be sterilised.
Low friction, no adhesion.
Wide temperature range from approx. - 200°C to + 260°C.
Available for all diameters up to approx. 1,900 mm.