O rings shall be designated by the internal and section diameters, the quality grade to din 3771 4 and the material to din 3771 3. Orings are indicated as and have a din 3771 size of 23x4. O rings and backup rings 4 trelleborg sealing solutions latest information available at. These o ring sizes correspond to us standard as568, british standard bs1806, bs4518, swedish sms 1586, french afnor 47501, japanese jis b2401, as well as many common metric sizes according to din 3771 and iso 36011 standards.
These additional factors have to do with manufacturing, inspecting and storing the o rings properly and are typically addressed by a good quality assurance program. Oring inside diameters, crosssections, tolerances and designation code are in accordance with iso 36011. Our oring size charts show the common oring size standards most often usedreferenced standards by our. Professional sales team with 24 hours best service to you. We will swiftly produce any size of nonstandard o ring you need by using one of the three following techniques. Please contact us if you cannot find any specific information. The tolerance of class b o rings is based on equation a. This part of iso 3601 lays down the quality acceptance criteria of orings used. Various o ring compounds exhibit different shrinkage rates during molding. To ensure that the o ring does not get jammed or cut during assembly, it is necessary to take care that the bevel values see fig. Edition december 2016 101 101 101 106 108 111 112 1 d special o rings d.
The normal o ring sizes herein shown are based upon a 70 durometer nitrile standard. Our oring size charts show the common oring size standards most often usedreferenced standards by our customers in the us and internationally. Orings manufactured to us and international standards. This standard identifies oring sizes by the id x cs, and may be followed by a letter indicating the quality level n normal quality. Orings are indicated as and have a din 3771 size of. To ensure that the oring does not get jammed or cut during assembly, it is necessary to take care that the bevel values see fig. Manufacturing quality systems surface quality storageshelf life. Download standards through your account documents are normally available within a few minutes. Din 37714 this publication is the german industrial standard for oring surface quality. Orings are indicated as and have a din 3771 size of 165x3. Upon enquiry specific sizes can also be produced after agreement. The german institute for standards duetsches institut fur normung. Browse our metric oring size chart to view common metric oring sizes and order orings from the worlds largest inventory network. Orings are indicated as and have a din 3771 size of 250x8.
Iso 36011 oring standard specifications inch and metric. O rings can be produced from many different elastomer materials and a wide range of o rings of standard materials is available from stock. Among others, current certifications include ec 1935. Designation of an oring with an internal diameter, dl, of,2 mm, a section diameter, d 2, of 1,8 mm, quality. O ring handbook parker hannifin o ring division europe. Orings and backup rings trelleborg sealing solutions.
Oring size chart bs1806as568b oring sizes by reference number, down load pdf. Germany din 3771 replaced by din iso 3601, usa as 568 o application standards e. Mar 27, 2019 din 37711 factory manufacture the rubber o ring for hydraulic pump. The chemical name of this oring is ethylene propylene diene monomer. O ring material has higher heat expansion than metals, and to account for any swelling, the inner volume of the groove should be about 25% larger than the o ring volume. Details of the software products used to create this pdf file can be found in the. Technical handbook o rings eriks offers a number of o ring kits in nbr 70 shore a, fkm 70 shore a, and fkm 90 shore a. Presently the seal industrys most widely used elastometer. Standard orings are kept in stock after the din 3771 and iso 36011 norms. These orings are in inch dimensions according as 568abs 1806 and in metric dimensions according din 3771, sms 1586, afnor 47501, and jisb2401. Din 3771 oring standard specifications metric oring cross. Orings are standardized in din iso 3601 former din 3771.
Use our download area for more details, information and documents. All o rings are according din 3771 iso 3601 tolerances. Dichtomatik carries a wide range of orings with sizes and options, as well as other. Din 3771 metric orings size chart the din 3771 o ring standard is issued by the german institute for standards duetsches institut fur normung. The size range which is available in the greatest range of sizes, materials and. The tables in the oring size chart list approximately 2000 o ring sizes in order by inside diameter. Technical handbook orings eriks seals and plastics. Catalogue parts must not be used for validation in automotive and aerospace applications. This part of iso 3601 lays down the quality acceptance criteria of orings used in. Designation of an o ring with an internal diameter, dl, of,2 mm, a section diameter, d 2, of 1,8 mm, quality. Iso 3601, din 3771, bsi bs 4518, bsi bs 1806, jis b 2401, and nf t 47501 sorted by cs, then by id. The bandwidth of available o rings is so wide and so closely graded that almost any application is covered. We offer o rings in inches and well as metric measurements. When it is necessary to inspect o rings that conform to this part of iso 3601 at the time of customer receipt.
The parker oring handbook has been a standard reference work used by seal. Other methods should be agreed between the manufacturer and the user. The eriks oring manual is intended as a guide to assist in the selection of. Download the oring sizes chart it contains oring sizes in order by inside. All orings are according din 3771iso 3601 tolerances. Many factors other than the gland design, specified o ring size and elastomer selection can impact the performance of the o ring in a sealing application. Technical handbook orings eriks offers a number of oring kits in nbr 70 shore a, fkm 70 shore a, and fkm 90 shore a. Buna oring oring in houston and minneapolis dichtomatik. Orings can be produced from many different elastomer materials and a wide range of orings of standard materials is available from stock. The bandwidth of available orings is so wide and so closely graded that almost any application is covered.
Optionally, this designation may be followed by a letter. Din 3771 1 factory manufacture the rubber o ring for hydraulic pump natural rubber nr 377 1 compounds based on natural rubber have high strength and high resilience with good abrasion resistance. They were placed on your computer when you launched this website. About us europe seals bv high tech o rings, rubber.
Oring size chart iso 36011din 37711 oring sizes, down load pdf. Many factors other than the gland design, specified oring size and elastomer selection can impact the performance of the oring in a sealing application. The standard includes two grade o ring performance factors manufacturing quality systems surface quality three factors that are of particular importance when dealing with o rings are. Wuerth fasteners sealing elements sealing rings oring din 3771 oring, metric 3d cad models. Oring handbook parker hannifin oring division europe. The tables in the oring size chart list approximately 2000 oring sizes in order by inside diameter. Orings shall be designated by the internal and section diameters, the quality grade to din 37714 and the material to din 377. When it is necessary to inspect orings that conform to this part of iso 3601 at the time of customer receipt, the inspection procedure shall be agreed upon by. The alternative names of the compound are teflon and they are mostly produced by. Wuerth fasteners sealing elements sealing rings oring iso 3601 din 3771 power oring 3d cad models. Additionally several custom dimensions are also kept in stock.
Din 37711 factory manufacture the rubber o ring for hydraulic pump. Oring material has higher heat expansion than metals, and to account for any swelling, the inner volume of the groove should be about 25% larger than the oring volume. Thousands of common metric orings and nonstandard orings in metric sizes are available in stock. In accordance with adobes licensing policy, this file may be printed or viewed but. Size references have been modified to match bs1806 and as568, however there are two tolerance standards in existance that do not necessarily match. The international standards organisation iso standard, iso 3601 comprehensively defines both the oring and hardware dimensions for rod, piston, face seal grooves.
Figure 1 typical oring configuration 6 inside diameters, d 1, crosssections section diameter, d 2, and tolerances. Our policy towards the use of cookies techstreet, a clarivate analytics brand, uses cookies to improve your online experience. Din 3771 5 pdf din metric o rings size chart the din o ring standard is issued by the german institute for standards duetsches institut fur. International o ring standard cross reference 2 shortly after o rings first came into common use, it became obvious that standards for o ring sizes, tolerances, and groove design would be beneficial. Oring 250x8 fkm fpm viton 80 shore a brown er17202.
O rings for use in fluid systems, dimensions to iso 36011 this document comes with our free notification service, good for the life of the document. The tolerances of the oring dimensions are determined according to din iso 36011 class b. Orings are one of the most commonly used and most important components in machines utilised across a wide variety of different industries. Din 3771 oring standard specifications metric oring. The company mission statement is to supply the best possible industrial sealing products, and reaching the highest level of customer satisfaction. Company official website oring material guideline hydraulic orings pneumatic orings rapid gas decompression high temperature oring chemical resistance oring chemical processing orings aerospace oring medical oring food and drug oring medical pharmaceutical oring semiconductor oring potable water oring download oring charts. We offer orings in inches and well as metric measurements. Inside diamter width cross section shrinkage size adjustment. The din 3771 oring standard is issued by the german institute for standards duetsches. Class b o rings have dimensions and tolerances suitable for generalpurpose applications. S special quality, and a code indicating the rubber.
Material type of material elastomer, ptfe, polyurethane, metal. These additional factors have to do with manufacturing, inspecting and storing the orings properly and are typically addressed by a good quality assurance program. Din 3771 4 this publication is the german industrial standard for o ring surface quality. The international standards organisation iso standard, iso 3601 comprehensively defines both the o ring and hardware dimensions for rod, piston, face seal grooves. Europe seals europe seals has a strong cooperation with several leading oring and molded parts manufacturers in the world. Orings are deceptively simple components resembling no more than a circular ring of rubber material acting as a sealant between two machine parts. Because of its popularity, there is virtually an unlimited number of possible sizes of an o ring. Din 37711 general metric sizes din 3770 special sizes. Iso 3601 din 3771 power oring wuerth free 3d cad models. Download standards through your account documents are normally available within a few minutes once registered, documents can be ordered and downloaded 24 hours a day excluding periods of technical maintenance. Standard o rings are kept in stock after the din 3771 and iso 36011 norms. Din 3771 metric orings size chart the din 3771 oring standard is issued by the german institute for standards duetsches institut fur normung.
O rings are standardized in din iso 3601 former din 3771. Thus, the need for size standards which cover the most common sizes used. O rings are used in a variety of applications in different industries around the world. The oring is commonly used in and has an operating temperature range from 260. Orings for use in fluid systems, dimensions to iso 36011 this document comes with our free notification service, good for the life of the document. Since then various government and engineering organizations have produced a multitude of oring standards. The normal oring sizes herein shown are based upon a 70 durometer nitrile standard. Explosive decompression resistant grades are available. International oring size standards pdf global oring and seal orings are simply identified by id and cs, similar to din 3771.
I learned much of this information from the precision associates website. We use cookies to make our website more userfriendly and to continually improve it. This standard applies to orings to din 3771 part 1, testing and marking. Various oring compounds exhibit different shrinkage rates during molding. The oring configurator report is merely a product recommendation and should be discussed with a sales engineer from freudenberg sealing technologies. This ptfe teflon oring is mm and in the color white. Jan 19, 2019 din 37715 pdf din metric orings size chart the din oring standard is issued by the german institute for standards duetsches institut fur. International 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. The most common oring sizes are based on the international standards listed below. To download a pdf copy of the oring handbook, go to. The oring is commonly used in and has an operating temperature range from 40. Nitrile combines excellent resistance to petroleumbased oils and fuels, silicone greases, hydraulic.
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