This oring seal design section will give you step by step instructions on how to design a seal or rubber part for your application. It has not been practical to attempt to seal liquids which will swell the oring more than. Those who are already familiar with oring seal design. If you insert seals on cylindrical surfaces, precise diameters are required for the rod and the bore. Parker oring handbook the 43 and 47 design charts are often used for vacuum seals. An o ring is a solidrubber seal shaped like a dough nut or torus. 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.
This system differs from others in that an additional nut is tightened over an o ring into a chamfered area, creating a. It is not possible to insert orings on noncircular cylinders or custom groove paths for axial seals. The design charts below show the standard boss designs that are used for this purpose. Our orings are manufactured according to metric and imperial international standards such as as 568b, din iso 3601 and jis. The boss seals team was strategically picked to meet specific needs in the heavy duty marketplace.
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. To complete the o ring design process, the o ring material needs to be specified based on the seal s anticipated environment. Orings offer several advantages over other sealing systems. Consider this a rubber guide or oring guide in helping you find the exact rubber material and size you need.
The sae society of automotive engineers oring boss seal uses a male fitting with an oring to seal in a female port with an angled section where the oring seats. Oring groove design guides for face seal flange, dovetail flange, static cylinder and piston, and dynamic cylinder and piston designs. Osk boss hydraulic sae 900 oring seal kit 250 piece bunan. An oring is a simple and versatile ring shaped packing or sealing device. The boss o ring gland is pretty much standard and parker refers to the same spec for o ring cavity dimensions. An oring boss seal is a technique for joining two fluidcarrying pipes, hoses, or tubing. Designing the parts of an application where o rings will be applied is broadly termed o ring groove design. The seal assembly consists of an elastomer o ring and a gland. The oring selector covers both imperial and metric standards.
An o ring boss seal is a technique for joining two fluidcarrying pipes, hoses, or tubing. Compression results take into account crosssectional reduction due to installation stretch. Oring gland design dovetail seal also here there is a metal to metal contact as long as the construction will not deform under system pressure. O rings offer several advantages over other sealing systems. Our tools and resources are created for both novice and advanced users, providing the best sealing expertise and design recommendations for todays critical sealing challenges. Toggle nav 1912 east 123rd, olathe, ks 66061 phone. To learn more about our boss 900 series options, contact us or request a quote and we will provide you with a timely quote that is based on your projects exact specifications. These boss seal o rings are used in sealing straight thread tube fittings boss type in the design and service of hydraulic equipment. The as568901 through 932 o ring sizes are used for sealing straight thread tube fittings in a boss. Filling machine valves on the line were fitted with dynamic ptfe orings, while the.
Seal implementationrelated software kalsi engineering. A look in to how each o ring is used brennan industries. It has not been practical to attempt to seal liquids which will swell the o ring more than. Simply making the oring fatter larger crosssection does not feel like a good solution. Oring installation design and specification for dynamic. To complete the oring design process, the oring material needs to be specified based on the seals anticipated environment. Oring seals are described in this section under scope of oring use. Nearly all custom size o rings, washers, square rings, and xrings in almost every material are supplied without tooling fees. When compressed between mating surfaces, an o ring blocks the passage of liquids or gases. Our online oring calculator offers a quick and easy way to calculate oring. An o ring is a simple and versatile ring shaped packing or sealing device. The different between oring boss and oring face sealing sae fittings duration. Not only have the sales grown, but the product offering has expanded to include wheel seals, pinion seals, tapered roller bearings, hubcaps and hubcap components, oring kits, and gladhands.
Designing the parts of an application where orings will be applied is broadly termed oring groove design. Boss 900 series orings from ace seal are manufactured from premium quality materials and are capable of being used on almost any job. Having a circular cross section that functions as a seal, in both static and dynamic applications, by being compressed between the mating surfaces comprising the walls of the gland, in which it is installed. A boss tube fitting with boss seal is cylindrical projection on a casting or forging.
The design of the groove where the oring sits plays a major role in how the oring performs its sealing role. Consider this a rubber guide or o ring guide in helping you find the exact rubber material and size you need. In order to seal properly the oring has to deform in the application by being compressed and stretched in any number of ways. Strength of transverse fillet weld design of welded joints design. Boss seals the as568901 through 932 oring sizes parkers 3 series are intended to be used for sealing straight thread tube fittings in a boss. Oring component generator inventor autodesk knowledge. Seal implementationrelated software oring analyst rev. Reference charts for designing the right oring groove dimensions for optimal oring performance, then order orings online from the worlds largest oring inventory network. If you select an o ring type first, the o ring component generator offers logical options for placement surface and reference. The oring gland is created by metals fitting and manifold on all side.
This system differs from others in that an additional nut is tightened over an oring into a chamfered area, creating a. Leading this list is our core of engineers, equipped with over years of experience in seal design technology. Due to the dramatic growth over the past four years, boss seals, llc has doubled their warehouse space in tulsa, oklahoma. Though boss seals was formed in 2004, the experience in this industry has been evolving for over years. When compressed between mating surfaces, an oring blocks the passage of liquids or gases. At global o ring and seal, our quality management system qms is critical to ensure we consistently achieve the highest standards of product performance and customer support. Click here for more information on face seal groove design.
We would like to thank seal engineering as fredrikstad, norway for graciously providing orings for the material testing stage. The squeeze or rate of compression is a major consideration in o ring seal design. More information, including design criteria on oring drive belts and their application will be found in oring applications, section iii. We would like to thank our supervisor, professor mikael enelund, head of the m. If there is still no match, then the only remaining options are to change the design of the bore or groove or both. The sizes are specified by the inside diameter and the cross section diameter. The design of the groove where the o ring sits plays a major role in how the o ring performs its sealing role. The boss oring gland is pretty much standard and parker refers to the same spec for oring cavity dimensions. You need to be registered and logged in to see the oring calculation software. Metric o ring groove designs vary greatly and choosing the right one for your application is important for maximum o ring performance. Select the planar face or work plane to locate the groove. Nearly all custom size orings, washers, square rings, and xrings in almost every material are supplied without tooling fees. In an oring boss abbreviated orb system, a malethreaded part is inserted into a femalethreaded part, providing a mechanical seal. The standard sizes are also used for most military specifications.
The backup rings are not required in this case as it is backed up by metal. We would like to thank seal engineering as fredrikstad, norway for graciously providing o rings for the material testing stage. Using equation 1, calculate the installed seal stretch. There is 20 standard sizes for orings used to seal straightthread tube fittings on a boss. Metric oring groove designs vary greatly and choosing the right one for your application is important for maximum oring performance. The end of that projection is machined to provide a flat, smooth surface for sealing.
Looking for help in selecting the proper oring for your application. Both are interlinked, thus ensuring the best possible combination of the calculated oring size and material choice. Eriks nv oring technical handbook oring gland design. O ring sealing principles the tendency of an o ring to return to its original shape when the cross section is deflected is the basic reason why o rings make excellent seals. O ring, seal design o ring, seal design 3 considerations finite element static seals axial static 1 axial static 2 trapezoidal conical static boss seal radial static dynamic seals rotary reciprocating to consider 1 to consider 2 to consider 3 semiconductor vacuum sealing permeation outgassing trapped gas o ring, seal failure psp o ring sizes. This compact, onthejob handbook provides all the practical and theoreticalinformation to design elastomeric o ring seals for the full range of static,reciprocating, and rotary functions. Boss 900 series o rings from ace seal are manufactured from premium quality materials and are capable of being used on almost any job. This kit contains 250 pieces and 12 of the most popular 900 series o rings. This o ring seal design section will give you step by step instructions on how to design a seal or rubber part for your application. In an o ring boss abbreviated orb system, a malethreaded part is inserted into a femalethreaded part, providing a mechanical seal. Order orings online quick and easy since 2007 from the oring store llc. In an orb seal an additional nut is tightened over the o ring into a chamfered area, creating a fluidtight seal. Both are interlinked, thus ensuring the best possible combination of the.
Looking for downloadable 3d printing models, designs, and cad files. To avoid tearing or nicking, the use of oring lubrication is recommended while installing the oring into the dovetail gland. See oring applications, section iii, for assistance in. On the ribbon, click design tab power transmission panel oring. Order o rings online quick and easy since 2007 from the o ring store llc. Aerospace recommended practice arp1232, arp1233 and arp1234 cover oring gland seal design for the as568 series orings. Read design tips, faqs, case studies and learn about trends in the industry. This specification covers many aspects to consider in oring seal design. The o ring gland is created by metals fitting and manifold on all side. Crude oil pump seal leakage mechanical seal engineering. This compact, onthejob handbook provides all the practical and theoreticalinformation to design elastomeric oring seals for the full range of static,reciprocating, and rotary functions. Oring component generator creates seals and grooves on cylinders and flat surfaces axial seals. Orings are also used as lightduty, mechanical drive belts. Oring sealing principles the tendency of an oring to return to its original shape when the cross section is deflected is the basic reason why orings make excellent seals.
As long as the metals stay in contact, o ring cannot squeeze out. More information, including design criteria on o ring drive belts and their application will be found in o ring applications, section iii. Oring, seal design oring, seal design 3 considerations finite element static seals axial static 1 axial static 2 trapezoidal conical static boss seal radial static dynamic seals rotary reciprocating to consider 1 to consider 2 to consider 3 semiconductor vacuum sealing permeation outgassing trapped gas oring, seal failure psp oring sizes. An oring is a solidrubber seal shaped like a dough nut or torus. The squeeze or rate of compression is a major consideration in oring seal design. Parker recommends utilizing our inphorm design software to guide. These charts list port dimensions per as5202 and j1926 and fitting ends per as4395.
In order to seal properly the o ring has to deform in the application by being compressed and stretched in any number of ways. A great start is arp1231, gland design, elastomeric oring seals, general considerations. The parker oring selector covers both imperial and metric standards. Orings are circular sealing elements with circular crosssections, and are mainly used in static applications. If the installed seal stretch is greater than about 3%, you may have to select the next larger o ring or require a custom o ring for your application. Parkers calculators not only address standard oring sizes, but allow users to custom design oring glands and seals specifically for their application. If you are unsure what crosssection size to use, see here. These boss seal orings are used in sealing straight thread tube fittings boss type in the design and service of hydraulic equipment. If you select an oring type first, the oring component generator offers logical options for placement surface and reference. Boss seals manufacture s heavy duty truck seals, and orings for the heavy duty market.
This metric oring groove design reference guide will help you find the right radius, backup, pressure and other oring dimensions for basic applications. Boss oring failure mechanical seal engineering engtips. Oring seals are typically used for sealing spool valves and for pistons in pneumatic. The sae society of automotive engineers o ring boss seal uses a male fitting with an o ring to seal in a female port with an angled section where the o ring seats. Communicate directly with our dedicated team of experienced professionals empowered. A static oring seal should not leak if it has an oring groove of the proper dimensions, the correct amount of crush and the proper surface finish. Complete with fully illustrated, detailed examples to guide you stepbystepthrough virtually every seal design situation, practical seal designprovides thorough coverage of ring seal geometry, material. An o ring seal is used to prevent the loss of a fluid or gas. At global oring and seal, our quality management system qms is critical to ensure we consistently achieve the highest standards of product performance and customer support. Unlike npt seals that stretch the female portion, sae seals use straight threads and therefore do not damage the mating part. We design and manufacture custom shapes and develop specialty materials to deliver a performance advantage.
We are certified to and meet all requirements of iso 9001. In the hardware configuration, you can choose between different sealing. If the installed seal stretch is greater than about 3%, you may have to select the next larger oring or require a custom oring for your application. On the ribbon, click design tab power transmission panel o ring. 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. In an o ring boss system a malethreaded part is inserted into a femalethreaded part, providing a mechanical seal. This kit contains 250 pieces and 12 of the most popular 900 series orings.
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