The shortcoming of P.T.F.E. is its suscepti-
bility to cold-flow(creep). In this type of
gasket, the cold-flow property has been
improved with the admixture of an organic
filler and the use of a special manufacturing
technique. These gaskets combine an ex-
cellent heat-and chemical-resistance with a
high cold-flow resistance and are ideal for use
in pipelines handling all types of chemical
products(such
as highly concentrated hot
sulfuric and nitric acids).
They cannot be used for sodium hydroxide
and other highly concentrated alkalis and
hydrofluoric acid. For these applications, use
the equivalent product No. 7026. The No.
7020 product has been given safety and
sanitation approval by the British National
Water Corporation.
Benefiting from the outstanding chenical and heat resistance properties of P.T.F.E., these sheet products with a superior fiexibility(softness) have a met - type structure produced with the use of a special machining process.
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