Technical handbook o rings standard o ring sizes 100 series 102 to 178 cross section diameters w 103 003 inches w 2 62 0 08 mm size nominal size standard o ring size metric o ring size only inches inches millimeters as 568a actual per as 568 a actual per as 568a uniform dash no.
O ring cross section selection.
An o ring is a circular cross section ring molded from rubber figure 1 1.
O ring sealing careful consideration must be given to the size of the o ring in relation to the size of the glandular space into which the o ring is being installed.
Technical handbook o rings operating conditions the practical selection of a seal compound depends on an adequate definition of the operating conditions.
O ring cross section and o ring groove design data from row inc.
In approximate order of application importance medium.
The difference between the original o ring cross section and the final o ring cross section once installed is known as the compression squeeze.
In a dynamic situation.
Inside diameters cross sections tolerances and size identification code.
For recommended o ring c s squeeze values please refer to page 11 12.
The o ring may be used in static applications or in dynamic applications where there is relative motion between.
The actual calculation for the cross section needed in an o ring varies depending on whether it will be used in a dynamic or static application.
Manufacturers of encapsulated o rings and industrial gaskets.
Standard metric sizes for o rings are defined by international standard iso 3601 1 2002.
The seal assembly consists of an elastomer o ring and a gland.
Be gained by increasing the squeeze on the o ring cross section.
On o ring drive belts and their application will be found in o ring applications section iii.
In de signing this new group of o rings we left spacing in the part numbers to allow us to add additional sizes should they be required.
Machining specifications.
1 2 what is an o ring seal.
An o ring seal is used to prevent the loss of a fl uid or gas.
Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections.
It is a loop of elastomer with a round cross section designed to be seated in a groove and compressed during assembly between two or more parts creating a seal at the interface.
Once the o ring s cross section diameter and inner diameter have been calculated specific o rings can be selected from the as 568a standard if the desired o ring is not available in this standard then manufacturer catalogs can be consulted for a larger selection.
Recommendations on application design and material selection are based upon available technical data and are offered as suggestions only.
Please contact us if you are looking for a size not shown in the 5 32 group.
An o ring also known as a packing or a toric joint is a mechanical gasket in the shape of a torus.
