KLINGER Gaskets Installation Guide
- June 5, 2024
- KLINGER
Table of Contents
INSTALLATION MANUAL
for KLINGER® gaskets
INSTALLATION TIPS FOR KLINGER® GASKETS
GASKET DIMENSIONS
1.1 CORRECT SIZE
✓ The gasket has to have the correct size.
1.2 BOLT HOLES
✓ Cut the bolt holes just a bit larger than the bolts to simplify the
centralization of the gasket.
1.3 INNER DIAMETER
✓ The inner diameter of the gasket should not be smaller than the inner
diameter of the flange.
STORAGE
2.1 IDEAL STORAGE CONDITIONS
✓ The gasket should be stored horizontally 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).
HANDLING
3.1 PROTECT THE GASKET
✓ All types of gaskets (metallic gaskets, PTFE gaskets, fiber-reinforced
gaskets, etc.) should be handled with the same care and attention.
✓ Avoid carrying small gaskets in a pocket to protect the gasket from damage.
✓ Carry ready cut gaskets carefully, ideally in some form of protective cover.
3.2 PROTECT THE SURFACE
✗ Do not bend the gasket and do not damage the surface.
3.3 TAKE CARE
✓ Metal reinforced gaskets could cause injuries.
BOLTS / NUTS / WASHERS
4.1 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 crosswise with the correct torque (calculation with
KLINGER® expert).
✓ Ensure that there is no corrosion on the bolts because this can affect the
function of the bolt.
✗ Never re-use bolts.
4.2 NUT PROPERTIES
✓ Use a nut that has a specified proof load 20% higher than the ultimate
strength of the fastener.
✓ Use standard threads, rather than fine.
✓ Use the correct lubricant.
4.3 WASHERS
✓ Use the same material for the washers and the nuts.
✓ Use washers to:
» bridge slotted or oversized holes
» even interface forces between joint components
» reduce problems of fatigue by spreading the load placed by the fastener on
the joint.
GASKET INSTALLATION
5.1 THE TOOLS
✓ At first, make sure that the following tools are available and in good
condition:
» the correct gasket chose for the specific application
» a calibrated torque wrench
» a wire brush
» lubricants for the bolts
5.2 CLEANING OF ALL FLANGE SURFACES
✓ Make sure that the flange surfaces are clean.
✓ Check the bolts and the flange surface if they are technically ok and free
from any serious defects.
✓ Always brush in the direction of the grooves.
✓ To avoid damage on the flange surface please use a brass drift.
5.3 FLANGE CONDITIONS
✓ Make sure that the flanges are parallel and report all irregularities.
5.4 IMPORTANT FOR THE GASKET
✓ Insert the gasket carefully between the flanges.
✓ The gasket has to be centralized in the flange.
✓ Ensure that the gasket is installed in a dry state.
✓ It is important that the gasket is not pinched or otherwise damaged when
bringing the flanges together.
5.5 LUBRICATION OF BOLTS
✓ Apply lubricant to the bolt and the nut threads as well as to the face of
the nut to reduce friction when tightening.
✓ Pay attention that the lubricant does not contaminate the gasket or the
flange surfaces.
✓ The recommended service temperature of the lubricant has to be within the
process service temperature limits.
5.6 BOLT TIGHTENING
✓ The required torque value can be calculated with a KLINGER® expert.
✓ The following 5 steps are necessary to achieve an even torque:
» finger tighten bolts (cross pattern)
» use 30% of the required torque (cross pattern)
» use 60% of the required torque (cross pattern)
» use 100% of the required torque (cross pattern)
» Close the torquing with two final passes in a clockwise sequence.
5.7 RE-TIGHTENING
✓ If retightening is considered necessary, this should only be done at ambient
temperatures before or during the first start-up.
✗ Never retighten compressed fibre gaskets at higher operating temperatures
and longer operating times.
5.8 RE-USE OF GASKETS
✗ For safety reasons never re-use a gasket.
✓ The cost of a gasket is minimal compared with the costs which are related to
the downtime of the plant.
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KLINGER Danmark
Tel +45 43 64 66 11
info@klinger.dk
www.klinger.dk