Tag: o-ring design

O-Ring Installation Best Practices

Summary Introduction O-Ring performance is often evaluated based on material selection, chemical compatibility, and operating conditions. However, installation is just as critical in determining whether a seal performs as intended. Some sealing issues attributed to material failure or poor design can result from improper handling, inadequate preparation, or incorrect installation techniques. Even a correctly specified […]

O-Ring Materials, Applications, and Selection

Summary Introduction An o-ring is an elastomeric ring with a round cross-section that forms a seal by squeezing and applying pressure. That sealing mechanism depends on the elastomer returning toward its original shape after deformation (elastic recovery) and maintaining contact pressure against the gland surfaces over time. Because elastomers respond differently to heat, cold, fluids, […]

Thermal Aging vs Chemical Attack: Diagnosing Elastomer Seal Failures

Summary Thermal Aging vs. Chemical Attack in Elastomer Seals Elastomer seals fail for many reasons, but thermal aging and chemical attack are among the most common. Thermal aging degrades elastomers over time by altering the polymer’s internal structure and physical properties, while chemical attack damages seals through material incompatibility, leading to swelling, shrinkage, or loss […]

Volumetric Swell vs. Hardness Shift in Elastomers

Summary Why Swell and Hardness Matter in Seal Performance When an elastomer seal is exposed to fluids over time, two material-level changes largely determine its long-term reliability: volumetric swell and hardness shift. These parameters capture how the seal’s size and stiffness evolve due to chemical exposure. Excessive swell or a significant change in hardness can […]

O-Ring Failures: Identify, Prevent, Overcome

Summary Introduction O-rings are among the most widely used sealing solutions for industrial applications. These components help prevent fluid or gas leakage, ensuring the efficiency and safety of countless mechanical systems. Despite their durability, o-rings are not immune to failure. Factors such as improper material selection, extreme environmental conditions, poor installation practices, and prolonged wear […]

Understanding ISO 3601-3 Standards

Summary Introduction to ISO 3601 Standards The ISO 3601 series is a comprehensive set of standards that define specifications for o-ring sizes, tolerances, surface imperfections, and quality grades. These specifications guarantee that seals meet rigorous performance and compatibility requirements. By providing a globally recognized framework, ISO 3601 simplifies the selection, production, and application of o-rings […]

熱膨張とシール性能

概要 熱膨張の概要 熱膨張とは、温度上昇にさらされたときに材料がどのように膨張するかを指します。シールが温度変動により寸法変化を経験すると、漏れ、押し出し、または破損などの問題が発生する可能性があるため、材料の選択とシールの設計では熱膨張が重要な考慮事項になります。熱膨張がシールにどのように影響するかを理解することは[…]

オイルシール101 –パート2

高品質のシーリングと費用対効果の高いオイルシール設計を提供し、ダウンタイムを削減しながら機器の稼働時間を延長します。包括的な選択により、短いリードタイムと、多くの一般的でより困難な産業用途で使用するためのさまざまな設計のオイルシールを提供しています。オイルシールを選択するとき、それは重要です[…]