Bonded Seals

Bonded seals, or Dowty® seals, protect bolts and create leakproof seals against a wide range of fluids. A synthetic rubber is bonded to a metal washer with heat and pressure, creating a highly durable yet flexible seal. This flexibility allows the sealing lips to form leakproof seals when under pressure. Bonded seals are designed for use against numerous fluids and can operate in a wide range of temperatures. Potter Associates, Inc. supplies bonded seals in several rubber sealing configurations and metal-backed elements.

Contact Potter today to learn more about our Dowty seals and washer options for your sealing applications.

Bonded Washers Features & Capabilities

Bonded seals protect bolted connections from harm such as abrasive fluids, harsh temperatures, or intense pressures. The synthetic rubber material offers flexibility, while the metal washer prevents extreme warping. Under pressure, the flexible rubber is forced into a tight seal. Bonded washers provide efficient and reliable sealing solutions at both high and low pressures. They are suitable for use with mineral oils, water, gases, and many other fluids.

Additional key benefits of bonded seals include:

  • Elimination of groove cutting and special machining
  • No flattening under stressful loads
  • Prevention of over-compression
  • Decreased maintenance
  • Reduction of bolting torque

Sizes of Dowty Seals

Potter is a distributor of bonded seals in a range of sizes from measurement systems including:

  • American Standard
  • European Metric (German, French, & Japanese)
  • BSP (British)

Rubber Compounds for Bonded Seals

Bonded washers can be crafted from numerous types of synthetic rubber materials. These rubbers offer various advantages for specialized applications. Nitrile bonded seals and Viton bonded washers offer excellent solutions for excellent temperature resistance, while EPDM bonded seals provide excellent protection from chemicals or corrosive fluids. Dowty seals are available in:

  • Nitrile
  • Buna
  • Viton
  • EPDM
  • Silicon
  • Aflas

View our full bonded seal specifications and sizing charts for more information, or contact Potter for help determining the best sealing rubber compound for your application.

Industries Served

Potter is a trusted distributor of bonded seals for a range of applications. We work with respected manufacturers including Garlock, Busak-Shambam with Trelleborg, Tylok, and PureFlex to distribute premium products. We supply Dowty washers to a variety of industries, including:

Contact Potter for Quality Bonded Seals Today

Potter is your premier distributor of bonded seals. We have decades of expertise and experience passed through family generations. Learn more about specific services or products by requesting a quote and see what we can do for you. For more information, contact us today, and we will assist you with any questions or inquiries.