Different Uses Of SAE Flanges

SAE Flangs are types of the hydraulic flange which is made according to SAEJ518 standards.

The acronym SAE stands for Society of Automotive Engineers. . ) And where there’s passage of oil under pressure.


Flanges are made from normalized forgings and are usually of two kinds of substance, steel ST52.3 and stainless steel AISI SS316L.


SAE Flanges come in two series, code 61 (3000 series) and code 62 (6000 series). For code 61 (3000# series), they are available in all nominal sizes between DN10 (3/8″) and DN125 (5″). For code 62 (6000# series), they are available in all nominal sizes between DN10 (3/8″) and DN80 (3″)

Working Pressure:

Please take note that the stress information of the flange and connected gear combinations may vary from each other. For example: if a pipe on the flange has a lower working pressure, it will lead to an overall lower working pressure of the system. Visit here if you want to know more about different kinds of flangs.

How SAE Flanges work:

A comprehensive set comprises of a flat side flange and an o-ring side flange. The o-ring side flange contains a groove seat to put a rubber o-ring (normally made of NBR material). The entire set creates a seal between a flat surface and o-ring held in a recessed circular groove in the other half.

As a result of this usage of the o-ring, flanges with o-rings has an edge over metal to metal flanges as all-metal flanges are more prone to leakage because they have to be tightened to a higher, yet thinner torque range. This makes metal to metal flanges more prone to strip crack or threads. Apart from this, Learn more about Different kinds of stainless steel manufacturing.

A whole set of flange is tightened using socket head cap screws & spring washers according to recommended torque. The screw lengths are usually shorter than the general SAE flanges span but this is normal compared with SAE J518 standard. Also, as per SAE J518, there are no requirements for hex nuts for securing the flanges.

Brands of Flanges:

Oleo Tecnica is an Italian manufacturer specializing in SAE Flanges. Oleo Tecnica was established in 1976 and has over 36 years of technical experience manufacturing flanges. Other well established brands include Parker Hannifin and Stauff.

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