O ring design guide metric

Global O-Ring and Seal has developed o-ring groove design and gland dimension guidelines. The o-ring cross-section in your design will determine all your subsequent dimensions and specifications.

Metric O-Rings are a type of mechanical gasket used for sealing applications. They are a specific variation of O-Rings, which are mechanical seals in the shape of a torus with a round cross-section. Metric O-Rings are designed with standardized dimensions based on the International Organization for Standardization or ISO , making them suitable for applications that follow metric specifications. Metric O-Rings are manufactured using various materials, such as synthetic rubbers, thermosets, and elastomers, each chosen based on factors like chemical compatibility, temperature range, sealing pressure, lubrication requirements, durometer, size, and cost. Some of the most common materials used for metric O-Rings include:.

O ring design guide metric

The info is based on 70 Shore A Durometer hardness only. Featuring dimensions for metric cylinders and face seal flange grooves. This can allow more streamlined maintenance and shorter downtime with less effort required to secure the seal during installation. Especially handy if the face seal is assembled upside-down. However, due diligence is required when designing a dovetail groove due to limited void space compared to a conventional square groove. This problem can be aggravated by volume swell. Therefore dovetail grooves are not recommended unless end use conditions and their effects upon the seal are thoroughly taken into consideration. Note: Top radius R is a critical dimension; too small a radius can damage the seal during installation, while excess radius can lead to extrusion failure. It achieves the same sealing efficiency with either internal or external pressure. However there is very little void space and volume swell can easily lead to extrusion failure. Website by Highland Creative. Search Close this search box. Surface Finish Generally surface finish for sealing surfaces are as follows… 63RMS maximum: For non-critical sealing surfaces such as groove sides 32RMS maximum: For static sealing on critical sealing surfaces such as groove base and top. Static Cylinder Grooves.

For non-standard o-ring sizes, check out the Parker 5-Dash Series on our website. Request a Quote. However there is very little void space and volume swell can easily lead to extrusion failure.

Thousands of common metric o-rings and non-standard o-rings in metric sizes are available in stock. Custom o-rings are available upon request and can typically be produced within a few weeks with no tooling fees. If you'd like to discuss your specialty application with a product expert, call us today at We have millions of o-rings in stock or they con be made to order in a few weeks without tooling fees. Compare o-ring compatibility and o-ring material recommendations with our o-ring material selection guide. View our o-ring groove charts for standard o-ring gland design and our o-ring groove design recommendations FAQs. We offer a selection of specialty formulated o-rings for peak performance in high temperature applications.

An O-ring groove is a circular cross-sectioned recess in a housing or mechanical device designed to hold an O-ring seal. The O-ring sits in the groove and is compressed during assembly, creating a seal between two surfaces. O-ring groove design is critical to the performance of the O-ring seal. When designing an O-ring groove, it is essential to consider all these factors to ensure an effective seal. O-rings are available in various materials, sizes, and cross sections to meet the needs of most applications. O-ring compression ratios can vary depending on the application. At Allied Metrics , we can assist with O-ring groove design and O-ring selection to ensure a successful application.

O ring design guide metric

O-ring groove design guides offer default dimensional guidance on the most basic o-ring groove design applications. The best o-rings are useless without the right groove design which becomes increasingly important the more demanding the application environment. Review the general o-ring groove design considerations before moving onto the specific o-ring gland design type. Engineering support services are available for a fee for expert help optimizing critical applications. X-Ring Seals and high performance O-Ring material groove design follows the same principals as basic O-Ring applications, although require even more attention to design adjustments for specific application environments for optimal sealing performance and life.

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Explore Groove Designs View our o-ring groove charts for standard o-ring gland design and our o-ring groove design recommendations FAQs. All Rights Reserved. Once the o-ring cross-section is selected and the gland height is calculated to achieve the desired squeeze to the o-ring , the final calculation will be the gland width. These factors include room for thermal expansion, swell due to fluid exposure, and the effect of tolerance variations in the machined groove and molded o-ring. Ultimately, the final design must handle the extremes of tolerances. A dovetail face seal is a special static gland designed to retain the o-ring in the groove. There will always be a gap between the two surfaces. Compare o-ring compatibility and o-ring material recommendations with our o-ring material selection guide. Copyright Sealing Australia. The first table is for industrial face or flange seals. Note: The designer will be making trade-offs between dimensional parameters. Dovetail Groove.

As your value-added partner, ERIKS offers the technical expertise to provide customized solutions to your sealing requirements. This manual can be downloaded per section using the below table of contents of completely in the documentation section.

Copyright Marco Rubber and Plastics. O-Ring Extrusion Extrusion is a concern for radial seals where a designed gap exists between moving components: Either the piston and bore, or the rod and bore. They are a specific variation of O-Rings, which are mechanical seals in the shape of a torus with a round cross-section. They are amongst the most widely utilized seal designs in the world. Explore standard size o-ring sizes below. Metric O-Rings are a type of mechanical gasket used for sealing applications. Lastly, the fourth table is for dovetail groove design. Share on Pinterest. Static Cylinder Grooves. Request Quote. Another factor related to O-Ring size is cross section. Concentricity and Diametric Gap In the sealing design, unless the bore and piston or rod are ensured to remain concentric by bearings, it must be assumed that all the gap possible can shift to one side. All Rights Reserved.