What are cork gaskets and where are they commonly used?

Cork gaskets are sealing components made from natural cork or cork combined with rubber, designed to provide reliable sealing in a wide range of industrial applications. They are valued for their resilience, moisture resistance, and ability to withstand temperature variations and pressure without breaking down. Common uses include automotive engines, transformers, electrical switchgear, valve covers, sumps, crankcase covers, and anti-vibration settings.

Are these gaskets resistant to oil, fuel, and temperature extremes?

Yes. Rubber-bonded cork gaskets, particularly nitrile-bonded types, are highly resistant to oils, fuels, and many industrial fluids. They also maintain their sealing performance under a range of temperatures, making them dependable for both hot and cold operating environments.

Are cork gaskets suitable for electrical applications?

Yes. Cork gaskets, particularly resin-bonded and rubber-cork variants, are widely used in electrical switchgear, transformer covers, and other power supply applications because they offer both insulation and sealing capabilities.

What is the difference between natural cork and rubber-bonded cork gaskets?

Natural cork gaskets are lightweight, compressible, and suited to applications where moderate sealing performance is needed. Rubber-bonded cork gaskets, such as those bonded with nitrile or neoprene, offer enhanced durability, oil resistance, and flexibility, making them ideal for automotive and heavy machinery applications. The choice depends on the environment, pressure levels, and exposure to oils or fuels.

Can cork gaskets help reduce vibration and noise?

Absolutely. Cork’s natural composition, especially when combined with rubber, offers excellent vibration-damping and sound-deadening properties. This makes them an effective choice in automotive and industrial equipment where noise control and mechanical stability are important.

How do I choose the right cork gasket for my application?

Selection depends on factors such as the type of fluid or gas being sealed, the operating temperature range, pressure levels, and whether vibration or noise reduction is needed. Our range includes natural cork, nitrile-bonded, neoprene-bonded, and firm-grade NBR cork to suit different requirements.

Cork Gasket Manufacturing Experts

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Cork Gaskets

Cork gaskets and cork rubber gaskets are suitable for industrial applications because of their ability to withstand moisture, extreme temperatures and pressure without degrading.

They may also offer sound deadening and anti-vibration in some industrial settings, adding to their versatility and appeal.

At PTM, we stock several cork gasket types for many industries, including:

Automotive engineering
Transformers and generators
Power supply applications

Common use cases include electrical switchgear, covers and lids, valve covers, sumps, crankcase covers, inspection doors, and anti-vibration.

Our Range of Cork Gaskets .

Here is a list of our cork gaskets of different grades and sealing applications. These are available as natural cork, resin-bonded, or rubber bonded.

Click on the links below request data sheets for our various products.

As with all materials, it is recommended that the style is tested for suitability as grades do vary.
We are happy to advise on any application, but final responsibility lies with the customer.

Cork Gasket Manufacturing Experts

Our Range of Cork Gaskets .

Statite™ Oil Paper

Flexoid™ Gasket Paper

Nitrile-bonded Cork Gaskets

Firm-Grade NBR Cork Gaskets

Nitrile Bonded Cork

Neoprene-bonded Cork Gaskets

Cork Gasket FAQs.

For further information on our services or to discuss your requirements, contact us today.

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