Make sure the squeeze % is sufficiently high enough to seal, but low enough to allow dynamic movements. Orings available to buy online from eriks sealing technology uk. We provide our customers with the unique combination of product and material expertise combined with efficient, customized logistics. The calculation is based on the application temperature, compressions. Eriks seals and plastics custom molded elastomers, orings. As a leading hose supplier offering a highquality range of hoses, couplings and compensators, eriks is able to advise the customer in detail and offer the best possible pricequality ratio. By simply entering installation specifications for an application, it recommends o ring sizes, housing layout and corresponding part. Eriks o ring technical handbook by eriks nederland issuu. Otherwise many bad things will happen to your design. When designing grooves for static axial seals, the first consideration is whether the. Cold set can be reduced by using a more flexible polymer structure, this would be reflected in a lower glass transition temperature.
As well as the chemical volume swell or shrinkage of the oring. Static applications there are five types of static oring applications. Oring installation design and specification for dynamic. These developmental design guides make it easier for the user to install and manipulate orings with a standard axial squeeze gland design. Oring eriks has developed an entire series of compounds that satisfy various international standars for contact with foods and pharmaceuticals. Used to prevent the o rings from falling out of the glands. Gland design should also be checked to ensure the oring is not overcompressed with too much squeeze applied.
The extent of extrusion depends upon the hardness of o. Select a standard o ring based upon dimensions measured from a sample. Save time calculating and designing oring grooves and verify the oring sealing performance by checking parameters like oring compression, free groove volume, oring inner diameter stretch and even much more. An o ring can perform sealing by means of squeeze under low pressure conditions. Dovetail glands are used in static or slow moving dynamic applications, and require strict tolerances that are difficult to control. Oring guide parker hannifin prdifa technology division parker. In order for the oring to be compressed when in the gland, its crosssection diameter cs must be greater than the total effective depth of the. Gland depth x groove width area of the gland must be larger than the cross section area of the o ring pi x r2. Eriks also produces to fda specifiecations in small quantities in over 20 compounds to 5000 mm in diamemter. Once you find the exact metric oring you need, you can. Reciprocating seal oscillating seal rotating seal application in reciprocating and oscillating motions groove dimensions for reciprocating and oscillating applications are the same. G gland design for encapsulated teflex orings 151 12. The following pages contain basic oring gland design information. After you have verified your nominal oring size functionality within your assembly, specify design your oring groovegland.
O ring weight calculator tool o ring weight calculator tool. Gland design special considerations, part 2 in addition to compression, the stretch applied to orings in service either to keep the oring in the gland during assembly or service, or to aid in the installation can have an impact on the sealing performance. O ring technical handbook as your valueadded partner, eriks offers the technical expertise to provide customized solutions to your seal requirements. Dynamic applications, due to the motion against the oring, are more. An oring must be squeezed and stretched for proper functionality.
Gland design o rings and rubber parts supplier techno ad. Additionally, the o ring volume should not exceed 90% of the minimum gland void to allow the o ring to deform. Squeeze inches oring cross section diameter in inches gland depth. Please contact the local eriks representative if an application does not clearly fall into these design parameters. The groove design allows the oring to be retained in the face seal during assembly and maintenance. Dynamic oring sealing dynamic oring glands parkero. Additionally, the oring volume should not exceed 90% of the minimum gland void to allow the oring to deform. This sae aerospace standard as provides standardized gland groove design criteria and dimensions for elastomeric seal glands for static and dynamic applications.
Gland design for kalrez orings compression set compression set is essentially a measure of a seals ability to retain sealing force and, therefore, the capability to. Dovetail oring gland design in dovetail applications the oring is squeezed primarily in an axial direction, with a valve exerting force on the top and bottom of the oring sealing surfaces. Save time calculating and designing oring grooves and. Parkers calculators not only address standard oring sizes, but allow users to custom design oring glands and seals specifically for their application. Hence, one can think of the o ring crosssection as being pinched between the bore diameter b d and the groove diameter g d. This metric oring groove design reference guide will help you find the right radius, backup, pressure and other oring dimensions for basic applications. Dynamic oring sealing dynamic oring glands parkeroringhandbook. Because of our technical experience, special applications are no problem for eriks. Male gland female gland 12 e o ring gland design for eciprocating seals w i. The glands have been specifically designed for applications using sae as568 size orings, with related class 2 tolerances, at pressur. Generally, an oring design should maintain a 1040% squeeze for static applications, and no more than 30% for dynamic. Select a standard oring based upon dimensions measured from a sample. Select a standard oring and groove based upon a driving diameter.
These developmental design guides make it easier for the user to install and manipulate o rings with a standard axial squeeze gland design. Eriks technical manual oring gland design information. The eriks oring manual is intended as a guide to assist in the selection of the best oring out of the correct. For more information on the oring groove calculator or other products please visit our contact page or fill the ask eriks form on the upperright corner. Squeeze inches o ring cross section diameter in inches gland depth. Sufficient lateral room is required in the gland slot to accommodate the backup rings as well as the oring. Sufficient lateral room is required in the gland slot to accommodate the backup rings as well as the o ring. By simply entering installation specifications for an application, it recommends oring sizes, housing layout and corresponding part. Prototypes and samples prototypes and samples are produced from experimental moulds. The subsequent series production may differ in terms of production tech. Oring gland design dynamic applications there are three types of dynamic applications. Eriks oring groove calculator features the calculation of. As568b standard oring groove design contact us for assistance or samples the three main types of standard groove designs are industrial static also called radial, industrial reciprocating also called dynamic, and face seals also called axial or flange.
The oring is compressed in the radial direction when seated in the gland. Eriks seals and plastics is a leading technical resource for seals, engineered plastics and bearings required for demanding applications. The eriks o ring manual is intended as a guide to assist in the selection of the best o ring out of the correct rubber compound in the right application for engineers, pur. The groove design allows the o ring to be retained in the face seal during assembly and maintenance.
Used to prevent the orings from falling out of the glands. For example, if your orings crosssectional diameter is 1. The eriks oring design calculator features the calculation of. Reference charts for designing the right oring groove dimensions for optimal oring performance, then order orings online from the worlds largest oring inventory network. Dovetail face seal o ring gland design default chart. Save time calculating and designing o ring grooves and. If you need to know the weight of your o ring, you can use our o ring calculator. An oring can perform sealing by means of squeeze under low pressure conditions.
Flange seal radial seal dovetail seal boss seal crush seal. Oring technical handbook as your valueadded partner, eriks offers the technical expertise to provide customized solutions to your seal requirements. Eriks seal shop enables you to buy many standard items such as bs1806, bs4518 and iso3601 orings and oil seals from eriks sealing technology. O ring eriks has developed an entire series of compounds that satisfy various international standars for contact with foods and pharmaceuticals.
This metric o ring groove design reference guide will help you find the right radius, backup, pressure and other o ring dimensions for basic applications. Hence, one can think of the oring crosssection as being pinched between the bore diameter b d and the groove diameter g d. Dovetail groove engineering design guide custom oring. From the chart below, identify your nominal o ring desired size, then your o ring gland depth requirements. This is beneficial for special applications where the o ring has to be fixed by the groove e. After you have verified your nominal o ring size functionality within your assembly, specify design your o ring groove gland.
Both are interlinked, thus ensuring the best possible combination of the. Gland depth x groove width area of the gland must be larger than the cross section area of the oring pi x r2. Eriks nv oring technical handbook oring gland design. Oring selector wikid, the industrial design engineering wiki. Types of oring applications gallagher fluid seals, inc. An o ring must be squeezed and stretched for proper functionality. If an oring is close to extrusion because of unavoidable material softnessflexibility, pressure, or clearance gap, an effective fix is a backup ring on one or both sides of the oring. An oring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it. Metric o ring groove designs vary greatly and choosing the right one for your application is important for maximum o ring performance. Find your orings squeeze amount in inches by subtracting the gland depth from crosssectional diameter with a calculator.
Generally, an o ring design should maintain a 1040% squeeze for static applications, and no more than 30% for dynamic. The o ring is compressed in the radial direction when seated in the gland. The extent of extrusion depends upon the hardness of o ring, the pressure, and the size of the clearance gap. Nov 10, 2015 so far on this blog weve discussed oring sizes, the materials theyre made from, and the ways in which they can be used. Parker recommends utilizing our design tools mobile inphorm and the oring selectordesign software to guide the user through the design and selection of an oring and corresponding seal gland. The oring selector covers both imperial and metric standards. Top sites apple o ring design guide 2019 latest apple o. If an o ring is close to extrusion because of unavoidable material softnessflexibility, pressure, or clearance gap, an effective fix is a backup ring on one or both sides of the o ring.
The plug diameter can also be calculated by subtracting the minimum gap from the minimum bore giving the maximum plug diameter. In order for the o ring to be compressed when in the gland, its crosssection diameter cs must be greater than the total effective depth of the. The online o ring calculator offers engineers and professionals a quick and easy way to calculate o ring dimensions and the appropriate housing layout in accordance with the international o ring standard iso 3601. Select a standard o ring and groove based upon a driving diameter. Choose between over 30 construction part materials and 11 oring compounds. If you need to know the weight of your oring, you can use our oring calculator.
Oring groove design guides for face seal flange, dovetail flange, static cylinder and piston, and dynamic cylinder and piston designs. Both are interlinked, thus ensuring the best possible combination of the calculated oring size and material choice. Metric oring groove designs vary greatly and choosing the right one for your application is important for maximum oring performance. From the chart below, identify your nominal oring desired size, then your oring gland depth requirements. For more information on the oring groove calculator or other products please visit our contact page or. Eriks seal shop enables you to buy many standard items such as bs1806, bs4518 and iso3601 o rings and oil seals from eriks sealing technology.
The eriks oring manual is intended as a guide to assist in the selection of the best oring out of the correct rubber compound in the right application for engineers, pur. Oring weight calculator tool oring weight calculator tool. An o ring is contained in a gland and forced to flow into the surface imperfections of the glands and any clearance gaps available to it. Eriks standard orings and load them also into your created design.
Design chart 52 for industrial reciprocating oring packing glands piston gland rod gland b1 piston groove dia. The plug diameter h for an oring must be figured using the minimum clearance gap as given in figure 20 and the maximum clearance gap as shown in figure 22. The dimensions of the groove can be calculated by the eriks oring calculator. American society for testing and materials astm d2000 line callouts. Eriks eriks the oring has become the worlds most popular and versatile seal due to its simple shape, low space requirements and its availability in a vast selection of sizes and compounds to meet every industrial requirement.
In this post, well talk about the common types of oring applications, and their impact on oring sizing and hardware design. Dovetail face seal oring gland design default chart. So far on this blog weve discussed oring sizes, the materials theyre made from, and the ways in which they can be used. Register on the site to take part in the various services we have to offer you. The engineering design guides developed by ace seal are intended to provide assistance with gland design static axial applications. Dovetail o ring gland design in dovetail applications the o ring is squeezed primarily in an axial direction, with a valve exerting force on the top and bottom of the o ring sealing surfaces. The online oring calculator offers engineers and professionals a quick and easy way to calculate oring dimensions and the appropriate housing layout in accordance with the international oring standard iso 3601. As your valueadded partner, eriks offers the technical expertise to provide customized solutions to your seal requirements. Parker recommends utilizing our design tools mobile inphorm and the oring selector design software to guide the user through the design and selection of an oring and corresponding seal gland. As568b standard o ring groove design contact us for assistance or samples the three main types of standard groove designs are industrial static also called radial, industrial reciprocating also called dynamic, and face seals also called axial or flange. This groove design is relatively uncommon as it is expensive to machine and should not be used unless absolutely required.
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