Dowty Seals, Bonded Washers, and Dowty Washers: Essential Components for Reliable Industrial Sealing
Author : internationalseals internationalseals | Published On : 28 Feb 2026
In hydraulic and fluid power systems, preventing leakage under pressure is critical for maintaining efficiency, safety, and equipment longevity. Among the most trusted sealing solutions used across industries are Dowty Seals, Bonded Washers, and Dowty washers. These specialized sealing components provide dependable performance in high-pressure environments where conventional sealing methods may fail.
International Seals supplies premium-quality sealing products designed to meet modern industrial demands, ensuring durability, precision, and long-term reliability.
What Are Dowty Seals?
Dowty Seals are high-performance sealing washers consisting of a metal washer combined with a bonded elastomer sealing ring. This innovative design allows the seal to withstand extreme pressure while maintaining tight sealing around threaded fasteners.
Originally developed for hydraulic applications, Dowty seals have become a global standard in fluid sealing technology.
Key Features of Dowty Seals
- Leak-proof sealing under high pressure
- Strong metal support ring prevents over-compression
- Elastomer lip ensures tight sealing contact
- Resistant to vibration and pressure fluctuations
- Suitable for static sealing applications
Common Applications
- Hydraulic fittings and connectors
- Automotive braking systems
- Oil and gas equipment
- Industrial machinery
- Pneumatic systems
Dowty seals are widely chosen because they combine structural strength with flexible sealing performance.
Understanding Bonded Washers
Bonded Washers operate on the same principle as Dowty seals and are often used interchangeably in industrial terminology. A bonded washer integrates a metal washer with an elastomer insert permanently bonded to its inner diameter.
Benefits of Bonded Washers
- Excellent sealing capability for threaded joints
- Prevents fluid and gas leakage
- Easy installation without special tools
- High resistance to pressure and temperature variations
- Cost-effective sealing solution
Bonded washers are especially effective where sealing reliability is required without complex gasket systems.
Materials Used in Dowty Seals and Bonded Washers
International Seals manufactures Dowty seals and bonded washers using high-quality materials to suit various operating conditions:
- NBR (Nitrile Rubber): Ideal for oil and fuel resistance
- Viton® (FKM): High-temperature and chemical resistance
- EPDM: Suitable for water and steam applications
- Stainless Steel Rings: Corrosion-resistant environments
- Carbon Steel Rings: High mechanical strength applications
Selecting the right material ensures optimal sealing performance and longer service life.
Why Industries Prefer Dowty Washers
Industries worldwide rely on Dowty washers because they:
- Reduce maintenance and downtime
- Improve equipment reliability
- Prevent costly fluid leaks
- Maintain sealing integrity under vibration
- Provide consistent torque performance
Their simple yet highly effective design makes them a preferred sealing solution in modern engineering systems.
Conclusion
Whether referred to as Dowty Seals, Bonded Washers, or Dowty washers, these components remain essential for high-pressure sealing applications. Their combination of metal strength and elastomer flexibility provides superior leak prevention compared to traditional washers.
Choosing high-quality sealing components from International Seals ensures long-lasting performance, reduced maintenance costs, and dependable industrial operation.
