O Ring Cross Section Selection

Machining specifications.

O ring cross section selection.

In approximate order of application importance medium. 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. Until now o ring standards have left a gap between the 1 8 and 3 16 nominal cross sections. 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.

Fluid power systems o rings part 1. Nominal cross section o rings. An o ring seal is used to prevent the loss of a fl uid or gas. For recommended o ring c s squeeze values please refer to page 11 12.

Standard metric sizes for o rings are defined by international standard iso 3601 1 2002. O ring cross section and o ring groove design data from row inc. The seal assembly consists of an elastomer o ring and a gland. That standard groups metric sizes into two series g and a.

Recommendations on application design and material selection are based upon available technical data and are offered as suggestions only. 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. Inside diameters cross sections tolerances and size identification code. Technical handbook o rings operating conditions the practical selection of a seal compound depends on an adequate definition of the operating conditions.

In a dynamic situation. On o ring drive belts and their application will be found in o ring applications section iii. The difference between the original o ring cross section and the final o ring cross section once installed is known as the compression squeeze. 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.

Manufacturers of encapsulated o rings and industrial gaskets. The o ring may be used in static applications or in dynamic applications where there is relative motion between. An o ring also known as a packing or a toric joint is a mechanical gasket in the shape of a torus. An o ring is a circular cross section ring molded from rubber figure 1 1.

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. Please contact us if you are looking for a size not shown in the 5 32 group.