O ring PTFE (Teflon) coatin
O ring PTFE (Teflon) coating
By applying a
mixture of PTFE and binder resins or a mixture of polyurethane and binder
resins, for example in an O Ring coating, the surface is provided with an
elastic layer having a thickness of about 25 to 35 microns. The connection is
firmly bonded to the elastomer and remains elastic. The coefficient of friction
is significantly improved. In recent years, there are new demands and trends in
an O-ring coating and seals. The automatic assembly, a silicone and an improved
paint adhesion, a reduction of friction in dynamic applications, and chemical
resistance are increasingly in demand.
Automatic installation:
The rubber
parts must be treated such that they can be separated without any problems and
that the assembly take place smoothly.
Silicone and improved paint adhesion
In painting
all rubber parts must be treated such that the adhesion of the coating is
guaranteed.
Reduction of friction:
Stick-slip
phenomena and high breakout forces can be prevented, depending upon the area of
application.
Chemically resistant:
Swelling and
dissolution of the rubber parts are to be prevented.
Other advantages of an O-ring coating:
durable low
friction coefficient
long lasting
good dry running properties
no stick-slip
effect
improved
resistance to aging
used in
dynamic applications
may be applied
to portions of the rubber seal
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