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Optimization of an O-ring seal

IP.com Disclosure Number: IPCOM000239431D
Publication Date: 2014-Nov-06
Document File: 2 page(s) / 28K

Publishing Venue

The IP.com Prior Art Database

Abstract

This idea describes a way of changing the geometry of a seal or groove to enhance performance in sealing and sanitary aspects.

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Abstract:

This idea describes a way of changing the geometry of a seal or groove to enhance performance in sealing and sanitary aspects.

Optimization of an O-ring seal

A normal O-ring with radial compression and seal can be seen below in Figure 1:

Figure 1

In the creation or modification of such a seal groove used for an O-ring, or similar seal types, some criteria’s can be used in enhancing performance of the seal.

These are:

·         Seal and/or groove geometry

·         Pressure distribution on the seal

·         Fluid access on the pressure side of the seal

To use these on an O-ring a Fill ring of various designs can be added on the pressure side. Se one example below in Figure 2:

Figure 2

This can then add the following benefits:

·         Secured fluid access to whole pressure side of O-ring ensuring pressure will help sealing performance.

·         Seal will work at both low and high pressure.

·         CIP/SIP procedures will work unaffected by changing parameters such as temperature, pressure and tolerances.

·         Add flexibility to change seal geometry in an existing groove.

The Fill ring can be done in many various designs giving pressurized fluids access underneath the O-ring. This can be done with a cross woven net or a molded design for example. The design of the Fill ring can also be a part of the O-ring groove itself. This can be done as machined grooves for an example, giving at least some of the functionality described above.