Annealed Copper Washers

copper shim washers
High quality shims from Stephens Gaskets

Annealed Copper Washers Manufacturing Experts & Bespoke Specialists
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Various Gauges/Thicknesses

Bespoke Manufacturing


Instant Quote Service


Instant Quote Service

Worldwide Delivery


Various Gauges/Thicknesses

Annealed copper washers, a product of the annealing process

Possess a unique set of properties that make them invaluable in various industrial applications.

Annealing involves controlled heating and gradual cooling, resulting in copper washers that offer exceptional benefits:

Softness and Flexibility

Annealed copper washers exhibit remarkable softness and flexibility, making them ideal for applications where conformity to uneven surfaces is crucial. This flexibility ensures a secure seal even on irregular mating surfaces.

Enhanced Conformity

The malleability of these washers allows them to conform precisely to mating surfaces, creating reliable and leak-resistant seals. Industries such as plumbing and automotive benefit from this sealing capability.

Resistance to Work Hardening

Unlike non-annealed copper washers, annealed counterparts are resistant to work hardening, which can lead to brittleness and cracking under stress. This durability ensures they can withstand pressure effectively.

Improved Sealing

The softness of these washers enhances their sealing properties, providing tight and dependable seals, vital in applications where leak prevention or pressure maintenance is paramount, like hydraulic systems and pipelines.

Heat Resistance

Annealing enhances copper’s natural heat resistance, making these washers suitable for applications involving temperature fluctuations or high-temperature environments..

Corrosion Resistance

Copper’s inherent resistance to corrosion is preserved through annealing. As a result, these washers thrive in outdoor and harsh environments where exposure to moisture or corrosive substances is a concern.

Electrical Conductivity

Copper’s excellent electrical conductivity remains unaffected by annealing, making these washers essential in electrical connections where reliability and conductivity are critical.

Low Galling Tendency

These washers exhibit a reduced tendency to gall, a form of wear that can affect metal surfaces sliding against each other. This is advantageous in wear-minimising applications.

Easy Installation

The softness and flexibility of these washers simplify installation, reducing the need for excessive force or torque during assembly.


These washers find uses across diverse industries, including automotive, plumbing, electronics, and industrial equipment, thanks to their versatile properties.

While annealed copper washers offer numerous benefits, it’s important to note that they might not be suitable for all applications.
Consider factors like temperature, pressure, chemical compatibility, and mechanical requirements when selecting the appropriate washer material.

Manufacturing Excellence: Annealed Copper Washers by Stephens Gaskets

Stephens Gaskets Limited specialises in manufacturing shims, washers, and gaskets to precise customer specifications. Our copper washers undergo meticulous annealing in a controlled atmosphere, ensuring a clean, scale-free finish.

The annealing process, conducted under vacuum-controlled conditions with inert gases, imparts stress-free properties to the copper washers, rendering their surfaces softer and promoting excellent sealing performance in their intended applications.

Stephens Gaskets is equipped to produce copper washers in any required size, including non-standard dimensions, with a focus on meeting tight tolerances. Whether you need R&D batch sizes or bulk production, we’ve got you covered.


What is the annealing process, and how does it benefit copper washers?

The annealing process involves controlled heating and gradual cooling, which imparts softness, flexibility, and various other desirable properties to copper washers. These properties enhance their performance in various applications.

In which industries are annealed copper washers commonly used?

Annealed copper washers find applications in diverse industries, including plumbing, automotive, electronics, and more, where their unique properties are highly advantageous.

Can I request custom sizes for annealed copper washers from Stephens Gaskets?

Absolutely, Stephens Gaskets specialises in producing custom annealed copper washers tailored to your exact specifications, ensuring they meet the unique requirements of your project.

Are annealed copper washers cost-effective for industrial applications?

While the cost of annealed copper washers may vary depending on factors such as size and material, their durability, sealing capabilities, and resistance to wear often make them a cost-effective choice for critical applications.

What considerations should I keep in mind when choosing washer materials for specific applications?

When selecting washer materials, factors such as temperature, pressure, chemical compatibility, and mechanical requirements should all be considered to ensure the washer’s suitability for the application.

Feel free to reach out to us for further information or to request a complimentary quotation.
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