Dowty Washers

Stainless Steel Dowty washers in stock.

Both BSP and Metric washers available with FKR Viton seal.

Benefits of Dowty Washers

Unmatched Reliability in Sealing Applications

Dowty washers provide exceptional sealing performance in a wide range of applications, ensuring a leak-free experience for your hydraulic and pneumatic systems. Made from premium materials, these washers are highly resistant to wear and tear, providing long-lasting durability for your peace of mind.

Perfect Fit for Versatile Use

These versatile washers are designed to fit a variety of industry-standard sizes, making them the perfect choice for numerous applications. Whether you’re working on automotive, industrial, or commercial equipment, Dowty washers will deliver a reliable and secure seal every time.

Environmentally-Friendly Solution

By choosing Dowty washers, you’re not only ensuring optimal performance but also contributing to a more sustainable environment. These washers are designed to minimise leaks and waste, helping you reduce your environmental footprint while maintaining the highest level of performance.

High Durability

The outer metal ring of a Dowty washer provides a high degree of structural strength, allowing the washer to withstand significant pressure and stress. This means they have a long lifespan, even in tough working conditions.

Resistance to Heat and Chemicals

The use of materials like stainless steel and Viton for the construction of Dowty washers means they have excellent resistance to heat and various chemicals. This ensures their performance and longevity in environments where other types of washers might fail.


Given their durability and superior sealing performance, Dowty washers can help to reduce maintenance costs and downtime, making them a cost-effective choice for many sealing applications.

What is a Dowty Washer?

A Dowty washer, also known as a bonded seal, is comprised of a metallic ring, typically made of stainless steel or other durable metals, paired with an inner rubber ring.

The metallic ring gives the washer its structural strength and rigidity, while the inner rubber ring – usually made of synthetic rubber or FKM Viton – provides the necessary elasticity for the creation of a secure seal. When compressed between two surfaces, the rubber seal deforms and provides a highly effective barrier against fluid or gas leakage.

Dowty washers are specifically designed to function effectively in high-pressure environments, such as hydraulic or pneumatic systems, making them an essential component in various industries ranging from automotive and industrial machinery to commercial equipment.

Due to their unique construction, Dowty washers offer superior performance, longevity, and versatility in sealing applications compared to traditional washers. They stand up to harsh environmental conditions and provide reliable sealing under high temperatures and pressures. This makes them a reliable and cost-effective solution for various sealing applications.

What are Dowty Washers Made Of?

A Dowty washer or bonded washer consists of two main components – a flat metal ring and an inner sealing ring, each made from different materials chosen for their specific properties.

The outer metal washer ring is commonly made from stainless steel, but it can also be made from other types of metal like zinc-plated mild steel or even brass, depending on the specific requirements of the application. This metallic ring provides the washer with its robust strength and rigidity, ensuring it can withstand the pressures of the assembly in which it’s installed.

The inner sealing ring is typically made from synthetic rubber materials such as nitrile, FKM (fluorocarbon rubber), and Viton, a brand of synthetic rubber and fluoropolymer elastomer that is particularly well-known for its excellent heat resistance and chemical stability. This inner rubber seal element is the component that provides the sealing function of the washer. As previously noted, when pressure is applied, the rubber material deforms to fill any gaps, creating an efficient high-pressure seal that prevents leaks.

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