The face seal design chart below explains the hardware dimensions to use for an O-ring seal when the groove is cut into a flat surface.
For designing systems which contain internal pressure, like the example below, the groove's outside diameter (OD) is primary, and the groove's width then determines the inside diameter.
Extrusion and nibbling of the O-ring is a primary cause of seal failure in dynamic applications such as hydraulic rod and piston seals. This form of failure may also be found from time to time in static applications subject to high pressure pulsing which causes the clearance gap of the mating flanges to open and close, trapping the O-ring between the mating surfaces.
Watch the video below from Parker's O-Ring eHandbook, showing how extrusion & nibbling can happen.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Digital ORing Handbook.
___________________________________________________________________________
Probably the most common cause of O-ring failure is compression set. An effective O-ring seal requires a continuous “seal line” between the sealed surfaces. The establishment of this “seal line” is a function of gland design and seal cross section which determines the correct amount of squeeze (compression) on the O-ring to maintain seal integrity without excessive deformation of the seal element.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Blog.
This video provides instructions on how to properly install and uninstall a Parker TechSeal's hollow O-ring. Although appearing simple, the installation process of a hollow O-ring requires a proper method in order to prevent overstretching the seal.
[embed]https://www.youtube.com/watch?v=pCMwwuyfrso[/embed]
The best way to install a hollow O-ring is to start at one point and work your way around the groove, pushing the seal into the groove. Once the seal is installed, lightly slide your finger around the seal to make sure that the seal is positioned and aligned correctly. Replacement is also fast and simple; gently pull the old seal out of the groove and install
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Blog.
Dovetail grooves are a great mechanism for holding O-rings in place. The retention feature makes having an upside-down or vertical face seal groove much easier. However, installing an O-ring into these grooves can be tricky without proper technique. The most important variable for installing an O-ring into a dovetail gland is making sure the seal is sized properly.
[embed]https://www.youtube.com/watch?v=KJje7GgFBbQ[/embed]
Start the installation by directly aligning the O-ring
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Blog.
This is the third in a series of video blog posts showing viewers how to install an O-ring.
In December, we discussed how to install an O-ring on a face seal gland and in January we showed you how to install an O-Ring in a standard female gland. In today's post, we'll look at the best way to install an O-ring on a standard male gland.
[embed]https://www.youtube.com/watch?v=QcJBVQvTvhw[/embed]
Typically when installing an O-ring into a standard male gland, the process is pretty straight forward. Guide the O-ring along the shaft until you reach the gland to where it snaps in place. Sounds simple enough, but here's some tips on exactly what to do, and not to do.
Article re-posted with permission from Parker Hannifin Sealing & Shielding Team. Original content can be found on Parker’s Blog.
Installing an O-ring in a face seal gland is among the easiest of all installations. However, that doesn't mean that there's not potential for errors. Watch the video below from Parker to learn how to install an o-ring properly on a face seal gland.
This article was originally posted in the Parker Sealing & Shielding Blog and written by Michael Sobeski, Product Engineer, Parker O-Ring Division. For more information on additional products visit the Parker O-Ring Division Website.
Are you designing an enclosure to help keep your critical components or internal fluid free from environmental exposure? The good news is that one of Gallagher’s most trusted partners, Parker Engineered Materials Group, has experience designing seals for use in environmental enclosures and has the material technology necessary to provide the most robust seal to meet your enclosure requirements.
This particular blog will provide an overview of the most important aspects of a good environmental seal, including the importance of good seal design, the certifications that provide confidence in the seal’s capability, and the available seal profiles useful for many different application constraints.
Making sure you have the right O-ring is critical to avoiding leakage in your product or machinery. But if an O-ring fails, do you know how to diagnose the problem? Can you tell the difference between wear and compression set problems in a flattened o-ring? Identifying the right root cause is critical to solving the problem of damaged O-rings. Watch the video below to learn how to diagnose some of the most common o-ring failure modes.
For more information on failure modes, check out the Leak Troubleshooting Tool in the support section of the Parker O-Ring Division website. Please contact us if you have any
Here at Gallagher Fluid Seals, we provide O-rings to almost every industry you can think of: fluid power, chemical processing, aerospace, energy oil & gas, life sciences, pulp & paper, etc.
The thing with an O-ring is as long as it’s doing its job, you never really even know it’s there. It is only when an O-ring starts to fail and a leak develops that you investigate the problem.
One of the key causes of O-ring cracking is ozonolysis (ozone cracking). Ozone cracking occurs mostly with Nitrile Rubber o-rings (nitrile, buna, buna-N).