O Ring Boss Seal Design

O ring face seal orfs sae j1453 this connection is designed for leak free use to 6000 psi.

O ring boss seal design.

Designing the parts of an application where o rings will be applied is broadly termed o ring groove design. In order to seal properly the o ring has to deform in the application by being compressed and stretched in any number of ways. Design table 4 3 and design table 4 4 show the two standard boss designs that are used for this purpose. These charts list port dimensions per as5202 and j1926 and fitting ends per as4395.

The design charts below show the standard boss designs that are used for this purpose. Both of these bosses use the same o ring but parker seal. 4 5 boss seals the as568 901 through 932 o ring sizes parker s 3 series are intended to be used for sealing straight thread tube fi ttings in a boss. As4395 is a fitting end that corresponds with as5202 bosses.

A standard application for an o ring is sealing a tube fitting. O ring sizes are detailed in sae j1926. The o ring in the face of the straight thread male end seals against the flat face female seat and is mechanically held in place by a swivel nut. There are industry standards for boss fittings with a series of o rings corresponding to each boss size.