---
title: Deciding Which Hydraulic Flange Fittings to Use
description: Two common types of hydraulic flange fittings are SAE Code 61 flanges and SAE Code 62 flanges. Use this post to help you select which is best for you.
image: https://blog.brennaninc.com/hubfs/hydraulicstractoryellow.focusonthehydraulicpipes.jpeg
---
[](https://brennaninc.com/)
Posted on [April 11, 2019](https://blog.brennaninc.com/which-type-of-flange-is-right-for-you)
# Deciding Which Hydraulic Flange Fittings to Use
Written by
### [Ally Pulskamp](https://blog.brennaninc.com/author/ally-pulskamp)
Posted in
[Flange Fittings](https://blog.brennaninc.com/topic/flange-fittings)
****
**Hydraulic connections** mate pipes, hoses or tubes together or to components such as cylinders, pumps, valves or ports in other equipment. They are used to ensure that they do not experience a [hydraulic system leak](https://blog.brennaninc.com/the-cost-of-hydraulic-system-leakage). These components combine to ensure the system is free of leaks or other failure under high pressures. Because of certain connection configurations and applications, [hydraulic flange fittings](https://brennaninc.com/product-category/flange-fittings/) or separate flanges are the best or sometimes the only practical solution to make an efficient and leak free connection.
**Flange connections** are typically used in applications that will encounter exceptionally high pressures when using pipe or tubing with an OD over 7/8 inches. They may be bolted together to mate two sections of pipe (tube or hose), or bolted or screwed into the component to secure a hydraulic flange fitting or section of pipe. Flanges can also be disassembled for easy access to modify, clean or inspect the system. Certain flanges may also be permanently welded together or to the port section of the component (motor housing, valve port, etc.). More commonly, a flanged joint is made by bolting two flanges together with a gasket in-between to ensure a secure seal.
**There are two primary types of flanges**:
- **SAE Code 61 flanges** are used for applications requiring working pressure of 3,000 to 5,000 PSI
- **SAE Code 62 flanges** are used for applications requiring working pressure of up to 6,000 PSI
The hydraulic flange fittings standard is ISO 6162, which includes SAE Code 61 and 62 or SAE J518 UNC thread North American Standard, along with International standards with metric threads.
This blog is an excerpt from our latest whitepaper, The Major Advantages of Flanges and Flange Fittings.
[](https://hubspot-cta-redirect-eu1-prod.s3.amazonaws.com/cta/redirect/1793404/488ad3c4-7db8-435c-99ef-ee11eecc3b14)
If you're interested in our line of Flange Fittings, [click here](https://connect.brennaninc.com/new-flange-catalog) to download our catalog.
You can also view our product collection on our website by[ clicking here](https://brennaninc.com/product-category/flange-fittings/).
Primary Sources Include:
- [EXPLORE the WORLD of PIPING](http://www.wermac.org/flanges/flanges_pipe-connections_pipe-flanges.html)
- [Hydraulics & Pneumatics](https://www.hydraulicspneumatics.com/hydraulic-pumps-motors/think-you-know-flanges) 1
- [Hydraulics & Pneumatics](https://www.hydraulicspneumatics.com/fittings-amp-couplings/flange-fundamentals) 2
- [Mechanical Contracting Education & Research Foundation](http://opus.mcerf.org/fitting.aspx?id=-329026041458642469)
- [Mobile Hydraulic Tips](https://www.mobilehydraulictips.com/what-are-hydraulic-fittings-and-flanges/)
- [The Fluid Power Safety Institute](http://www.fluidpowersafety.com/)™
---
[When to Use Flange Fittings and Why to Use Them](https://blog.brennaninc.com/why-flange-fittings) [Flange Plugs: What are they?](https://blog.brennaninc.com/flange-plugs-what-are-they)
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