Typical O-ring and application. An O-ring, also known as a packing or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, forming a …

The standard sizes used by O-ring manufacturers in the United States are defined by Aerospace Standard AS568B, Aerospace Size Standard for O-rings. That document, published by the Society of Automotive Engineers (SAE), lists the sizes of O-rings in six series or groups in both inches and millimeters.

When compressed between mating surfaces, an O-ring blocks the passage of liquids or gases. Parco O-rings are available in a wide range of standard and non-standard sizes that are suitable for nearly all sealing applications. diameter (CS) (see …

2016年7月12日 · How to Measure O-Ring CS and ID. The best way to size an o-ring is by measuring the CS (cross-section) and ID (inside diameter). For measuring the cross-section, it is best to use a caliper, a.k.a. micrometer. If you don’t have one available, various other sizing tools can be used to get a close estimate.

USA AS568 o-ring standard sizes are the most commonly used o-ring sizes in the world. Refer to our standard o-ring size chart to find USA AS568 o-ring dimensions. Order o-rings online from the world’s largest inventory network including custom o-rings typically without tooling fees.

ISO 3601-1 specifies the inside diameters, cross-sections, tolerances, and designation codes for imperial and metric o-rings used in fluid power systems for general industrial and aerospace applications.

All you need to do is measure the internal diameter (ID) or outside diameter (OD) and the width or cross section (C/S) of the o ring. The diagram shows exactly where these dimensions are to be found. Once you have these measurements you then need to decide if the size you need is listed below or if the best fit will be a metric oring.

This Global O-Ring and Seal Size Reference Guide covers the Aerospace Standard AS568 O-Ring Sizes published by the Society of Automotive Engineers (S.A.E.) and includes the Extended Sizes in the 400 Series.

Compression squeeze is the difference between the original O-ring cross-section (CS) and the gland height (H). It is expressed in either inches or mm. The compression ratio is the ratio between compression squeeze and the uncompressed O-ring cross-section. Compression ratio is typically expressed as a percentage.

2023年8月16日 · The CS measurement is typically expressed in either inches or millimeters, and is measured by taking the diameter of the O ring and subtracting twice the thickness of the rubber material. This measurement allows engineers and manufacturers to select the proper size of O ring for a specific application, ensuring a secure and effective seal.