How to Choose the Right Corrugated Metal Gasket

Article Directory

1 Structure and Sealing Principle
2 Performance Ratings That Matter
3 Material and Filler Options
4 Applications Across Industrial Equipment
5 Corrugated vs Spiral Wound vs Rubber Gaskets
6 Frequently Asked Questions

A flange leak at high temperature and pressure rarely comes from a bad flange — it comes from a gasket that could not keep up with thermal cycling and vibration. A corrugated metal gasket is built specifically for that environment, using a wave-formed metal core to keep sealing contact even as the flange expands and contracts.

Structure and Sealing Principle

A corrugated metal gasket uses a thin metal core formed into concentric waves, which compress under bolt load to create multiple sealing contact lines rather than a single flat surface. Many designs add a soft filler layer to fill microscopic surface irregularities on the flange face.

Filler layer (graphite or PTFE)

Corrugated metal core

Reinforcement layer (multi-layer designs)

Filler layer (graphite or PTFE)

This layered structure is what allows a corrugated metal gasket to hold a seal across repeated thermal cycles that would crack a rigid flat gasket or extrude a soft one.

Performance Ratings That Matter

800°C+high temperature rating

2500+ psipressure resistance

1-3typical layer count

10+ yrsservice life in flange service

Beyond raw temperature and pressure numbers, a well-specified corrugated metal gasket holds up under vibration and thermal cycling without losing bolt load, which is the failure mode that causes most in-service leaks long before the rated pressure is ever reached.

Material and Filler Options

Common corrugated metal gasket materials and filler combinations
Material	Temperature Range	Best Fit
Stainless steel	Up to 800°C	Chemical and corrosive media
Carbon steel	Up to 400°C	General industrial, non-corrosive service
Nickel alloy	Up to 1000°C+	Extreme heat, power generation
Graphite/PTFE filler	Application dependent	Improved microsealing on rough flanges

Applications Across Industrial Equipment

Petrochemical and chemical processing

Handles corrosive media and high-pressure process lines reliably over long service intervals.

Power generation systems

Seals turbine and boiler flanges under sustained high temperature operation.

Heat exchangers and pressure vessels

Maintains sealing integrity across repeated thermal expansion cycles.

Oil and gas equipment

Provides dependable pipeline and flange sealing in demanding field conditions.

Corrugated vs Spiral Wound vs Rubber Gaskets

Comparing corrugated metal gaskets with common alternative sealing types
Gasket Type	Temperature	Typical Use
Corrugated metal	High	Thermal cycling, moderate flange finish
Spiral wound	High	Critical high pressure flanges
Rubber	Low to moderate	Low pressure, non-critical service

Frequently Asked Questions

What temperature can a corrugated metal gasket withstand?

Depending on the base metal, ratings typically range from around 400°C for carbon steel up to 1000°C or higher for nickel alloy constructions.

Does a corrugated metal gasket need a filler material?

Not always, but adding a graphite or PTFE filler layer improves microsealing on flange faces that are not perfectly smooth.

How is a corrugated metal gasket different from a spiral wound gasket?

Both handle high temperature and pressure well, but corrugated designs use a formed metal core while spiral wound gaskets wind metal and filler strips together, generally at higher cost for critical service flanges.