The din 3771 oring standard is issued by the german institute for standards duetsches institut fur normung. Orings rubber washers rubber gaskets rubber mouldings. England bs 1806 replaced by bs iso 3601, sweden sms 1586, japan jis b 2401, france nft47501, germany din 3771 replaced by din iso 3601, usa as 568. We offer orings in inches and well as metric measurements. The as oring size chart has a column that shows the nominal size alongside the actual size. Standard orings are kept in stock after the din 3771 and iso 36011 norms. Oring handbook parker hannifin o ring division europe. Din 3771 1 factory manufacture the rubber o ring for hydraulic pump natural rubber nr 3771 compounds based on natural rubber have high strength and high resilience with good abrasion resistance. Mar 27, 2019 din 37711 factory manufacture the rubber o ring for hydraulic pump. Worlds largest oring warehouse over 45,000 items kept in stock for immediate. Orings oring is a close circle usually made of rubber which principal function is to block any fluid liquid or gas between two closely spaced surfaces.
The space that is being filled must be about 10% to 15% smaller than the crosssection of the o ring in order for o ring to seal properly. The tables in the oring size chart list approximately 2000 o ring sizes in order by inside diameter. Quality assurance by lloyds to iso 9000 has enabled ashton seals ltd. International o ring size standards pdf global o ring and seal o rings are simply identified by id and cs, similar to din 3771. The standard sizes used by oring manufacturers in the united states are defined by aerospace standard as568b, aerospace size standard for orings. 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. Material offering polymer codes a polyacrylate b butyl. International oring size standards pdf global oring and seal orings are simply identified by id and cs, similar to din 3771.
Operating and installation instructions ari armaturen. In order to read a secure pdf, you will need to install the fileopen plugin on your computer. Din 3771 oring sizes the german institute for standardisation din 3771 is a metric standard that defines oring dimensions by internal diameter and cross section. This standard identifies o ring sizes by the id x cs, and may be followed by a letter indicating the quality level n normal quality. Mfc was established in 1991, starting with o ring manufacture and pure rubber parts production. 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. Technical handbook o rings size tolerances and surface imperfections on o rings are influenced by the tolerance, finish, and cleanliness of the mold cavities from which they are produced. The parker oring handbook has been a standard reference work used by seal. In the oring divisions worldclass facilities, skilled parker. These o ring sizes correspond to us standard as568, british standard, swedish, as well as many common metric sizes according to din and iso standards. The design of oring sealing systems groove, sea ling surface is described in the relevant standards e. We will swiftly produce any size of nonstandard o ring you need by using one of the three following techniques.
Details of the software products used to create this pdf file can be found in the. The din 3771 standard for o rings is produced by the duetsches institut fur normung german institute for standards. 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. Technical handbook o rings the following tables list approximately 2000 o ring sizes in order by inside diameter. Drm is included at the request of the publisher, as it helps them protect their by restricting file sharing. Orings manufactured to us and international standards. Oring size chart iso 36011din 37711 oring sizes, down load pdf. Sitrans p measuring instruments for pressure fittings.
These o rings are in inch dimensions according as 568abs 1806 and in metric dimensions according din 3771, sms 1586, afnor 47501, and jisb2401. The military standard mil std 4 c is the most common surface standard for o rings and contains standard imperfection. Originally the nominal size was just for a listing of the approximate fractional dimensions of the oring. These tolerances are used in our technical documents to precisely describe our prod ucts.
Oring standards the most common oring sizes are based on the international standards listed below. The o rings usually applie to static or dynamic applications. These tolerances have been specified in the aerospace standard as 568a and as 871 a, din standard 3771 part 3, iso 3601 part 3, and milstd4c. In 1995, mfc started making tools such as o rings in house. O ring sizes are identified by the id x cs, followed by a letter indicating the quality level, and a code indicating the. Oring groove shape dynamic seal holding of oring in place definition of sealing force no metal contact flangegate prevent a sticking oring from being released from the oring groove. The advanced o rings can increase customer satisfactory due to tooling cost reduction, quality improvements, and product precision. O ring din 3771 1,000 128 nilosring 30318 av 16576863 nilos ring 1,000 5 spannstift 10x18 a 16456140 spring dowel sleeve iso 8752 4,000 151 zylinderschraube m 12x30 16445093 socket head cap screw din 912 1,000 158 zylinderschraube m 20x1,5x45 16445609 socket head cap screw. Static seal holding of oring in place definition of oring compression u shaped ball shaped dovetail shaped dovetail shaped with trilobe tm seal. Din 3771 and 36011 compression compression in % of the crosssection diameter. Din 3771 oring standard specifications metric oring. The size range which is available in the greatest range of sizes, materials and hardness is the bs1806as568b.
That is, a 1 mm o ring will have a crosssection of 1 mm. It is very similar to iso 36011 in both the sizes included and part nomenclature. Prior to the common use of dial calipers many people called out a 1 inch by 114 rt o ring, this was a dash 214. O ring iso 36011 011 a 7,65 x 1,78 s general industrial o ring iso 36011 a c0545 54,5 x 3,55 s aerospace din 3771 is produced by the duetsches institut fur normung german institute for standards. Standardni rozmerova rada podle mezinarodni normy din 3771 1 3,00 x 1,85 4,42 x 2,62 6,00 x 2,50 7,80 x 1,75 9,19 x 2,62 10,82 x 1,78 d 1 d 2 d 1 d 2 d 1 d. The as o ring size chart has a column that shows the nominal size alongside the actual size. Din 37711 factory manufacture the rubber o ring for hydraulic pump. Oring kits with conveniently arranged orings for repair, assembly and workshop.
Calculation of grooves and static seal in accordance with din 3771part 5 iso standard in bold d. S special quality, and a code indicating the rubber polymer and irhd hardness. O ring groove shape dynamic seal holding of o ring in place definition of sealing force no metal contact flangegate prevent a sticking o ring from being released from the o ring groove. In contrast to the as 568 a inch system, the nominal and physical dimensions of metric o rings match precisely. Mfc was established in 1991, starting with oring manufacture and pure rubber parts production. Most of these sizes are readily available from eriks stock in. Additionally several custom dimensions are also kept in stock. Din 3771 oring standard is issued by the german institute for standards duetsches institut fur normung. Secure pdf files include digital rights management drm software.
Radial shaft seal ring din 3760 1,000 126 oring 310x3 16463270 oring din 3771 1,000 128 nilosring 22224 av 16417122 nilos ring 1,000 5 sicherungsring 90x3 16452061 snap ring din 471 1,000 9 verschlu. Explosive decompression resistant grades are available. This standard specifies design deiails and dimensions of hole cylinder diameter housings for orings in compliance with din 3771 part 1 and rod diameter. Din 3771 o ring sizes the german institute for standardisation din 3771 is a metric standard that defines o ring dimensions by internal diameter and cross section. Upon enquiry specific sizes can also be produced after agreement. This standard applies to orings to din 3771 part 1, testing and marking. Orings are designated with a as568 bs 4518iso 3601 nf t47501 iso 6149 bs 1806 jis b 2401 din 3771 sms 1586. We are also able to supply many other nonstandard compounds on a short lead time. That document, published by the society of automotive engineers sae, lists the sizes of orings in six series or groups in both inches and millimeters.
With over 30,000 different materials and sizes available, our unique oring search tools help you find your match in seconds. 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. All sizes stated in this brochure are manufactured to din 3771 tolerances. Optionally, this designation may be followed by a letter indicating the quality level n normal quality. We offer o rings in inches and well as metric measurements.
As 568astandardni serie din 3771iso 3601 ms 33656ms 16142 tube fitting boss seals adali. Moulded o rings comply with din 3771 issued by the duetsches institut fur. Among others, current certifications include ec 1935. Parbak backup rings prevent extrusion in highpressure applications and help retain lubricant, extending oring life. The din 3771 o ring standard is issued by the german institute for standards duetsches institut fur normung. 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. Din 3771 1 factory manufacture the rubber o ring for hydraulic pump moulding produces the highest integrity seals over 10, mould tools in our inventory nonstocked tools rapidly made to specification press capacity for precision moulding of endless o rings up to 2. Oqjdqgmmhehmbnqonqshnmsn,qhmfchuhrhnm 2360 palumbo drive, lexington, ky 40509. As 568 iso 3601 din 3771 jis b2401 unit in mm unit in inch standard or0048 1,78 34,65 38,21 0,070 1,364 028 028. New castle harleydavidson inventory as of below date and. Prior to the common use of dial calipers many people called out a 1 inch by 114 rt oring, this was a dash 214.
Miniature orings, large special orings, continuously molded. All o rings are according din 3771 iso 3601 tolerances. This standard identifies oring sizes by the id x cs, and may be followed by a letter indicating the quality level n normal quality. Standard o rings are kept in stock after the din 3771 and iso 36011 norms. Parker oring material offering guide ceetak sealing solutions. Polymax are proud to be the largest online distributor of orings in the uk. 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. Metric o rings according to din 3771 except when otherwise noted in table below. Oring material offering guide 2360 palumbo drive, lexington, ky 40509 0hone parker. The din 3771 is no longer valid and has been completely replaced by the iso 3601 standard. Static seal holding of o ring in place definition of o ring compression u shaped ball shaped dovetail shaped dovetail shaped with trilobe tm seal. These oring 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.
136 114 1227 963 149 1515 722 1483 892 440 404 1315 909 296 144 811 198 1513 334 530 870 802 234 1486 694 195 1201 459 649 753 283 856 1005