Oring groove design guides offer default dimensional guidance on the most basic oring groove design applications. Gland csa d x w effect of gland angle and extrusion gap not addressed. Great design variety special shapes, x and drings are also on offer. Because of its popularity, there is virtually an unlimited number of possible sizes of an o ring. An o ring is one of the most common types of seals in the world. These are intended for use in basic design consideration and to understand the core principles involved in oring glandgroove design. Orings are used in a variety of applications in different industries around the world. This can be reduced to 3 times the crosssection if need be. The following table shows a selection of dimensions for groove width b and depth t dependant on crosssection d2. For other oring materials, be sure to consult your apple representative. Oring static face seal groove design guide marco rubber.
As well as the chemical volume swell or shrinkage of the oring. The best orings are useless without the right groove design which becomes increasingly important the more demanding the application environment. Oring groove design guides expert application engineering assistance. Oring groove dimensions for static and dynamic operation. Oring housing data for axial and triangular sealing. Parkers inphorm for orings, a seal design and material selection program, can help with this. The groove dimensions are incorporated in the standard dimensions. Oring groove design groove design for oring installation. Oring groove dimensions for vertical position pressure. Face seal gland design chart side wall angle is to allow for releasing of molded parts. Looking back to the gland designed in example 2 incorporated into a. This requires looking at the dimensionally largest possible. Good practice is to use a backup ring on either side of the oring, even though the pressure on the ring may be from one side only.
Oring groove and dimensions may be calculated as follows please refer to chart above given. The eriks oring manual is intended as a guide to assist in the selection of the best oring out of the correct. For those who are unfamiliar with oring design, it is recommended that they first study this introductory section, becoming familiar with the basic principles of oring seals, their common uses and general limitations. Oring seals for static and nonrotary dynamic applications. Global oring and seal has developed oring groove design and gland dimension guidelines. Oring groove design guides engineering quick reference. For the quadrings not listed, the groove dimensions are available upon request.
It is calculated by dividing the crosssectional area csa of the oring by the crosssectional area of the gland. The engineering design guides developed by ace seal are intended to provide assistance with gland design static axial applications. The table on our detailed information page lists recommended dimensions for static radial o ring glands by as568a o ring dash numbers. These are intended for use in basic design consideration and to understand the core principles involved in oring gland groove design. Choose between more than 30 groove materials and 11 oring compounds. Oring grooves are used to seal removable sections in a design which are at different pressures andor in contact with different fluids. Oring gland design for static seals oring gland design for dynamic seals no one two backup backup backup radial axial inches % inches % rings ring rings eccentricity max. Mar 02, 2021 for a one off, nonflight critical id use a 2022 oring. Backup rings less than 3mm id are available only as a.
You can flip the numbers if you want the groove in the bore. For male gland seals, an oring is installed in a groove that is machined into the od of the piston. Tg orings may also be an alternative for your particular application. Metric oring groove dimensions are listed for the most common metric cross sections with and without backup rings. Thus, the need for size standards which cover the most common sizes used. Oring design considerations what to know about oring squeeze, stretch, compression, and more. Because of its popularity, there is virtually an unlimited number of possible sizes of an oring. Those who are already familiar with o ring seal design. Oring design guide oring selection machining specifications the gland fill is the percentage of the gland that is occupied by the oring. Eriks nv oring technical handbook oring gland design. Designing axial static oring grooves to industry standards.
If the quadring swells in the application, the groove width can be enlarged up to 15% max. Simple, onepiece groove design reduces hardware and design. These dimensions will also be different if the oring is sealing a liquid which has a low volume. There is a lot of information scattered in many places about how to properly design an oring groove. The engineered materials group of the parker hannifin corporation is the worldwide leader in the field of designing, developing and manufacturing sealing systems, vibration dampers, emi.
The groove in the bore is lightly more of a pain in the butt. Various oring compounds exhibit different shrinkage rates during molding. Find the recommended oring size and gland dimensions in the appropriate design table in static oring sealing or dynamic oring sealing, sections iv and v, respectively. The gland depth is used to calculate seal compression. The wrong size groove makes the best oring underperform.
The groove must be designed to accommodate not just the oring size, but also its intended usage. A basic glossary of oring and other sealing terms is available in the appendix, section x, which may be. To give your oring a better chance at smooshing into the groove, a lead in angle or chamfer is used on the mating surface. Orings are among the sealing classics par excellence. Oring groove and dimensions may be calculated as follows please refer to chart.
Special solutions and special forms from freudenberg sealing technologies are also suitable as dynamic sealing elements, e. Dismiss alert the three main types of standard groove designs are industrial static also called radial, industrial reciprocating also called dynamic, and face seals also. Oring gland design for dynamic seals oring gland design for static seals. As568b standard oring groove design contact us for assistance or samples click here and contact us today to receive a quote or if you have any questions regarding sizing. Design engineers oring size guide pressure seals, inc.
The gland is basically a groove dimensioned to a certain height h and width w figure 1 to allow a fixed compression of the oring. Oring groove design and installation pdf quality seals. Otherwise contact us and we can custom mold any size or shape oring you need. When using a standard oring in a rectangular groove, what minimum radius do i need at the corners.
Quick oring groove design guide during the last couple of years i developed several mechanical designs involving oring grooves. Primarily used for static sealing of inactive machinery components against liquids and gases. An oring is one of the most common types of seals in the world. Eriks technical manual oring gland design information. Our oring groove design guides list default oring groove dimensions for the most basic applications and are intended to be used with the following oring groove design considerations to engineer on oring gland to optimize specific application performance. The oring is held firmly in place and has no tendency to drop out of the groove when the chamber is open. The glandgroove enclosed space ensures that the sealing function is maintained by keeping the oring where it needs to be. We recommend an inside turning radius of 6 times the crosssection of the oring. O rings are used in a variety of applications in different industries around the world. Static axial engineering design guide ace seals gland. Choose a standard size as568 oring using this oring size chart.
If i modify parkers gland recommendations, will the o. The piston and the installed oring are then inserted into the bore. In a static radial seal application the o ring is squeezed between the inner i. Oring is forced to flow within the groove toward the. Oring design quick reference this design quick reference guide is intended for use in specifying oring and groove dimensions for static applications with pressures less than 1500 psi. Oring groove design a uniform dash number b actual cross section dia.
Oring gland design for dynamic seals oring gland design for static seals standard orings 800. Industrial seals, orings, gaskets, new jersey, north. The gland is basically a groove dimensioned to a certain height h and width w. Working, design considerations and maintenance of orings. Fitting into a rectangular groove is preferred, however. Design and dimension the groove that your oring will go into by researching our oring groove design guide. Groove fill of the installed oring should not exceed 85 % to allow for possible oring thermal expansion, volume swell due to fluid exposure and effects of tolerances. This oring gland design guide is intended for use in specifying oring and gland dimensions for static applications. Oring groove design considerations and engineering guides for static face seals, metric orings, static dovetail orings, static rodpiston orings and dynamic. If i modify parkers gland recommendations, will the oring. If designed correctly, orings can provide a very effective seal. Oring standard cross reference 2 shortly after orings first came into common use, it became obvious that standards for oring sizes, tolerances, and groove design would be beneficial.
Pneumatic applications typically do not use a backup ring. An oring seal consists of an oring and a properly designed gland which applies a predictable deformation to the oring. Oring design charts 1 and 2 show the groove widths necessary to accommodate the thickness of the backup rings. It is suitable for dynamic or static seals within the temperature limits of elastomeric materials. Orings are normally used as seals in several ways, and dimensions of the groove or gland will also vary with the cross section of the ring, the type of operation. As the sealing function of the isc oring depends on the exact design of the mounting groove, it is imperative that the dimensions and tolerances stated in the following table be adhered to. As important as the oring seal itself is the groove that the oring seats into. Both are interlinked, thus ensuring the best possible combination of the calculated oring size and material choice. Oring gland design guidelines dichtomatik oring handbook oring gland design guidelines 2 oring seal types gland dimension calculations oring dimensions selecting an oringcrosssection idod interference reduction incrosssection compression squeeze and compression ratio gland fill extrusion backup rings additional groove details installation. Oring design, oring design guide, oring seal design. Design dimensions for oring installation orings are normally used as seals in several ways, and dimensions of the groove or gland will also vary with the cross section of the ring, the type of operation, and the amount of pressure used in the system. Suc cessful use depends upon proper groove dimensions and. For those who are unfamiliar with oring design, it is recommended that they first study this introductory section, becoming familiar with the basic principles of oring. Our oring groove design guides list default oring groove dimensions for the most basic applications and are intended to be used with the following oring groove design considerations to engineer an oring gland to optimize specific application performance.
The oring selector covers both imperial and metric standards. Female or tube the oring groove is located in the housing or cylinder and a tube is installed through the oring l. Male or plug the oring groove is located on a plug which is inserted into the housing or cylinder fig. Gland design for quadrings quadrings gland design staticdynamic inches the following table shows the groove dimensions for quadrings.
The normal oring sizes herein shown are based upon a 70 durometer nitrile standard. Those who are already familiar with oring seal design may simply refer to the appropriate design tables for the information needed. The minimum and maximum conditions should also be checked. Basic aplication groove design reference charts expert application engineer support. Oring groove design considerations and engineering guides for static face seals, metric orings, static dovetail orings, static rodpiston orings and dynamic rodpiston orings. Benefit from a modern user friendly design and be guided from design recommendations from info boxes. These developmental design guides make it easier for the user to install and manipulate orings with a standard axial squeeze gland design. General groove design for dynamic applications in case of compressivetype installations for dynamic applications, standard rubber oring practice i. Review the general oring groove design considerations before moving onto the. Oring housing data for axial and triangular sealing applications. We have included static, dynamic, and pneumatic applications. I have gathered some of this information to make a quick design guide to be used to design oring grooves that fit standard oring sizes and that can be machined easily.
Bay seal company oring reference guide face seal gland. Since then various government and engineering organizations have produced a multitude of oring standards. The gland groove enclosed space ensures that the sealing function is maintained by keeping the o ring where it needs to be. Oring groove design is a key consideration in the oring selection process. Oring seals from freudenberg sealing technologies can be adapted across all industries and market segments to technically demanding installation and operating conditions on a customerspecific basis. As568 dash number appears to the right of oring inside diameter i. Squeeze is the diametrical compression of the o ring between the bottom surface of the groove and the surface of the other mating part in the gland assembly. Axial millimeter % millimeter % no backup rings one backup ring two backup. For those who are unfamiliar with oring design, it is recommended to. Oring standards 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. For industrial use, order the oring by the parker compound number followed by the size number. Male or plug seal design is based on the following factors refer to fig.
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