Standard vs. Self-Centering Bonded Seals

Bonded seals are available in standard and self-centering variations. While both provide effective sealing solutions, there are important distinctions between the two.

Standard designs feature an elastomer bonded within the washer’s inner diameter, but lack any centering feature. During installation, care must be taken to ensure the seal is properly aligned within the bore. Misalignment can lead to uneven compression, compromised sealing performance, or installation errors.

Self-centering designs incorporate an extended elastomer profile that fits snugly within the bore or around the fastener during installation. This feature keeps the seal concentric within the assembly and simplifies installation to reducing the risk of misalignment. As a result, self-centering seals offer more reliable and consistent performance, particularly in applications that require precise sealing under high pressure.

For these reasons, Global O-Ring and Seal exclusively offers self-centering bonded seals as our standard product. This design offers the added assurance of proper alignment, enhanced seal integrity, and simplified installation.

Materials

Bonded seals are manufactured using a carefully selected combination of materials to deliver reliable sealing performance, durability, and compatibility with a wide range of fluids and operating environments. The elastomer provides the sealing function, while the metal washer offers structural integrity. Coatings enhance corrosion resistance where applicable.

NBR (Nitrile) offers excellent resistance to oil and fuel, while FKM offers superior resistance to chemicals and high temperatures. Mild steel is a strong and cost-effective choice, paired with a corrosion-resistant coating.

Custom Seal Capabilities

In addition to our standard offering, Global O-Ring and Seal provides custom bonded seal solutions to meet unique application requirements. We have the flexibility to customize key elements of the bonded seal to suit specific operational requirements, performance needs, and assembly conditions. Our team can help identify the ideal combination of materials and design features to ensure optimal performance in even the most demanding applications. Complete the product inquiry form or contact us to begin the process.

Bonded Seal Sizes

Bonded seals are available in a wide range of sizes to accommodate both inch and metric fasteners commonly used across various industries. Our size offerings align with standard hardware dimensions to ensure proper fit and reliable sealing performance. The chart below provides detailed measurements to help identify the appropriate bonded seal for your specific application.