o-ring sizes Archives - KODA oil seal and O-ring

O-Ring Size Guide: How to Measure, Identify, and Order the Right Size Every Time

Maggie August 31, 2026 August 31, 2026

Why O-Ring Size Matters More Than It Seems Choosing an O-ring is often treated as a simple measurement task: measure the old seal, find the closest size in a chart, and place an order. In engineering applications, however, O-ring size selection is a sealing-design problem, not simply a dimension-matching exercise. The correct O-ring must match the groove geometry, required squeeze,

The Importance of O-Ring Tolerance

Maggie August 10, 2026 August 10, 2026

O-ring tolerance is one of the most important but frequently underestimated factors in sealing-system design. An O-ring may have the correct nominal size, material, hardness, and compound designation, yet still fail to seal reliably if its dimensional tolerance is not appropriate for the application. For engineers, purchasers, maintenance teams, and manufacturers, understanding O-ring tolerance means understanding how small dimensional variations

AS568 O-Ring Quality & Compatibility

Maggie May 29, 2026 June 9, 2026

The AS568 standard is the most widely recognized sizing specification for O-rings in North America and many international industries. Whether used in hydraulic systems, pneumatic equipment, automotive assemblies, aerospace applications, or industrial machinery, AS568 O-rings provide a standardized approach to sizing that ensures compatibility, interchangeability, and reliable sealing performance. Understanding AS568 standards goes far beyond selecting a size number. Engineers,

What are Bonded Seals?

Maggie May 19, 2026 June 9, 2026

Introduction to Bonded Seals Bonded seals, also known as Dowty seals, are specialized sealing components designed to provide reliable, high-pressure sealing in demanding applications. They combine a metal washer with a vulcanized elastomer sealing element, offering enhanced durability and leak prevention compared to traditional O-rings alone. These seals are widely used in hydraulic systems, automotive assemblies, and fluid power equipment.

Ensure O-Ring Quality Through Testing

Maggie April 29, 2026 June 9, 2026

Why O-Ring Quality Testing Matters O-rings may appear simple, but their performance often determines whether entire systems operate reliably or suffer leakage, downtime, and costly failures. In hydraulic systems, automotive components, medical devices, industrial machinery, and aerospace equipment, sealing reliability begins with verified product quality. That is why testing is essential to ensuring consistent oring quality. High-quality O-rings are not

How to choose the right O-ring size the first time

Maggie February 26, 2026 June 9, 2026

Selecting the correct O-ring size is one of the most critical steps in achieving reliable sealing performance. A perfectly chosen material will still fail if the size is incorrect. Improper sizing can lead to leakage, excessive wear, compression failure, or even system damage. Understanding how to choose the right O-ring size the first time helps reduce downtime, improve efficiency, and

How to correctly select O-ring size

Maggie January 22, 2026 June 9, 2026

Why Correct O-Ring Size Selection Matters Choosing the correct O-ring size is one of the most important factors in achieving reliable sealing performance. Even when the right material is selected, an incorrect size can lead to leakage, compression failure, premature wear, or system downtime. O-rings are widely used in hydraulic systems, pneumatic equipment, automotive assemblies, industrial machinery, medical devices and

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