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Installation and Maintenance of Gasket
1.Gasket
dimensions
Correct
size:The
gasket has to have the correct size.
Bolt holes:Cut
the bolt holes just a bit larger than the bolts to
simplify the centralization of the gasket.
Inner
diameter:The
inner diameter of the gasket should not be smaller
than the inner diameter of the flange.
2.Storage:Ideal
storage conditions
The gasket should be stored horizontal to avoid
tensions and permanent warpage.Ideal
storage conditions are:
temperature
<
25°C
air
humidity 50
- 60%
Darkened
storage
room
Store the gasket in a clean condition(ideally in a
plastic bag).
3.Handling
Protect
the
gasket
All
types of gaskets (metallic gas- kets, PTFE gaskets,
fibre reinforced gaskets etc.) should be handled
with the same care and attention.
Avoid
carrying small gaskets in apocket
to protect the gasket from damage.Carry
ready cutted gaskets carefully, ideally in some form
of protective cover.
Protect the surface
Do
not bend the gasket and do not damage the surface.
4.Bolts/Nuts/Washers
Bolt properties
Pay
attention that all bolts which are designed for the
flange are installed.
Check
if the used bolts are suitable for the given
operating temperatures.
Tighten
the bolts cross-wise with the correct torque
Ensure
that there is no corrosion on the bolts because this
can effect the function of the bolt.Never Re-use
bolts.
Nut properties
Use
a nut which has a specified proof load 20% greater
than the ultimate strength of the fastener.
Use
standard threads, rather than fine.
Use
the correct
lubricant.
Washers
Use
the same material for the washers and the nuts.
Use
washers to:bridge
slotted or oversized holes.even
interface forces between joint componets
reduce problems of fatigue by spreading the load
placed by the fastener on the joint.
5.Gasket
installation
At
first make sure that the following tools are
available and in good condition:
the correct gasket chosen for the specific
application
a
calibrated torque
wrench
a
wire
brush
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