How to Prevent Gasket Failure: A Practical Guide from India's Gasket Company

Replacing a failed gasket is easy.
Preventing the same gasket from failing again requires a more systematic approach.
In industrial applications, gasket performance depends on much more than the gasket material itself. Flange condition, bolt loading, alignment, installation practices, pressure, temperature and process media all influence the reliability of a sealed joint.
By following the right selection and installation practices, plant and maintenance teams can significantly reduce avoidable gasket leakage and repeated shutdowns.

1. Select the Right Gasket Material

One of the most important steps in preventing gasket failure is selecting a material suitable for the application.

Consider:

Operating temperature
Operating pressure
Process media
Chemical compatibility
Flange type
Flange condition
Bolt loading
Thermal cycling
Required service life
Do not select a gasket simply because it was used successfully in another application.
Different operating environments require different sealing materials.

Depending on the application, NewAge Gaskets supplies solutions including Spiral Wound Gaskets, Non-Asbestos Gaskets, PTFE Gaskets, Graphite Gaskets, Mica Gaskets and Metallic Gaskets.

2. Inspect the Flange Before Installation

A new gasket cannot correct every flange problem.

Before installing a gasket, inspect the flange for:

Deep scratches
Gouges
Corrosion
Pitting
Warping
Surface contamination
Misalignment
Damaged bolt holes
The flange faces should be properly cleaned and suitable for the selected gasket.

New gasket + damaged flange = potential repeat failure.

3. Never Ignore Flange Alignment

Misalignment can create uneven gasket compression.
Before installation, check whether the flanges are properly aligned and whether excessive pipe strain is present.
Do not force flanges together using bolts simply to make the gasket fit.
Correct the underlying mechanical problem first.

4. Use the Correct Gasket Dimensions

A gasket must match the intended flange and sealing area.

Incorrect dimensions can result in:

Poor sealing
Gasket extrusion
Reduced sealing area
Interference with the flow path
Uneven compression

For custom applications, provide the gasket manufacturer with accurate:

Inside diameter
Outside diameter
Thickness
Bolt-hole information
Flange standard
Drawing or sample

NewAge Gaskets can manufacture custom and ready-cut gaskets according to application and customer requirements.
 

5. Never Reuse a Compressed Gasket

Once a gasket has been compressed and exposed to operating conditions, its sealing characteristics may change.
Reusing the same gasket can compromise joint reliability.
Whenever a flange is opened, use a new gasket appropriate for the application unless the specific gasket manufacturer explicitly permits reuse.
 

6. Follow a Controlled Bolt-Tightening Procedure

Uneven bolt loading is one of the common contributors to flange leakage.

A practical installation sequence generally includes:

Step 1 — Position the gasket
Make sure the gasket is correctly centered.

Step 2 — Install the bolts
Ensure the fasteners are correctly positioned and in suitable condition.

Step 3 — Snug the bolts
Bring the joint together without applying excessive force.

Step 4 — Tighten progressively
Use the specified cross-pattern or star-pattern sequence.

Step 5 — Verify the final load
Use appropriate calibrated equipment where torque-controlled installation is specified.
The objective is uniform and controlled compression, not maximum tightening.
 

7. Don't Choose a Gasket Based Only on Temperature

A common mistake is to select a gasket based primarily on temperature rating.
Temperature is important, but it is only one part of the application.

Also consider:
Pressure + Media + Temperature + Flange + Bolting + Application
For example, a gasket material suitable for steam service may not necessarily be suitable for a chemically aggressive process fluid at the same temperature.
 

8. Consider Thermal Cycling

A gasket joint may experience repeated heating and cooling.
Thermal cycling can affect the relationship between the gasket, bolts and flange.

For applications involving frequent temperature changes, consider:

Operating temperature range
Heating and cooling cycles
Gasket recovery
Bolt load retention
Flange construction
Gasket material

Specialized sealing solutions such as Spiral Wound Gaskets, Graphite Gaskets or Mica Gaskets may be suitable for certain high-temperature applications.
The final selection should always be based on the actual service conditions.
 

9. Don't Use a Thicker Gasket as a Quick Fix

A thicker gasket is not automatically a better gasket.
Maintenance teams sometimes select a thicker gasket to compensate for damaged or irregular flange surfaces.
This may not solve the underlying problem.
Instead, evaluate:
Flange condition
Available compression
Gasket material
Bolt load
Operating conditions
Manufacturer recommendations
The goal is to use the correct gasket, not simply a thicker gasket.
 

10. Inspect the Failed Gasket

A failed gasket can provide valuable information.

Before discarding it, examine:

Was it crushed?
Possible excessive compression.

Was it compressed unevenly?
Possible uneven bolt loading or flange misalignment.

Was it cracked or hardened?
Possible thermal or chemical exposure.

Was it chemically deteriorated?
Possible material incompatibility.

Was it extruded?
Possible excessive loading, unsuitable material or joint conditions.
The failure pattern can help identify what needs to change before the next installation.

Need help selecting the right gasket for your application?
Contact NewAge Gaskets for industrial gasket selection, custom manufacturing and reliable sealing solutions.