Page 63 - banneredThermosealCatalog2010

Instructions
n Bolts, Nuts, and Washers
Be sure to install the bolts that are
designed for the flange and suitable for
the given operating temperatures.
Ensure that there is no corrosion on the
bolts as this can effect the function of
the bolt. Never re-use bolts.
Use a nut which has a specified proof
lead 20% greater than the ultimate
strength of the fastener. Use standard
threads, rather than fine, and use the
correct lubricant.
Use the same material for the washers
and the nuts. Use washers to bridge
slotted or oversized holes, even
interface forces between joint
components, and/or reduce problems
of fatigue by spreading the load placed
by the fastener on the joint.
n Flange Conditions
Align the flange faces and bolt holes
and report all irregularities.
n Gasket Installation
Assure the gasket is the specified size
and material and ensure that it is free of
defects. Carefully insert the gasket
between the dry flanges. Make sure
the gasket is centered between the
flanges. Do not use joint compounds or
release agents on the gasket or seating
surfaces unless specified by the gasket
manufacturer as this can lead to
reduced surface friction.
Bring the flanges together ensuring the
gasket is not pinched or damaged.
Lubrication of Bolts
Uniformly apply lubricant to the bolt and
the nut threads as well as to the face of
the nut to reduce friction with tightening.
Do not contaminate the gasket or the
flange surfaces with lubricant. Be sure
that the recommended service
temperature of the lubricant is within the
process service temperature limited.