O Ring Cross Section Selection

An o ring seal is used to prevent the loss of a fl uid or gas.

O ring cross section selection.

Machining specifications. 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. The seal assembly consists of an elastomer o ring and a gland. 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. Be gained by increasing the squeeze on the o ring cross section. An o ring is a circular cross section ring molded from rubber figure 1 1. The o ring may be used in static applications or in dynamic applications where there is relative motion between.

That standard groups metric sizes into two series g and a. Technical handbook o rings operating conditions the practical selection of a seal compound depends on an adequate definition of the operating conditions. The difference between the original o ring cross section and the final o ring cross section once installed is known as the compression squeeze. Recommendations on application design and material selection are based upon available technical data and are offered as suggestions only.

Inside diameters cross sections tolerances and size identification code. 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. On o ring drive belts and their application will be found in o ring applications section iii. 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.

An o ring also known as a packing or a toric joint is a mechanical gasket in the shape of a torus. Fluid power systems o rings part 1. 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. Manufacturers of encapsulated o rings and industrial gaskets.

1 2 what is an o ring seal. 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. Please contact us if you are looking for a size not shown in the 5 32 group. In approximate order of application importance medium.

For recommended o ring c s squeeze values please refer to page 11 12. In a dynamic situation.