{"id":390,"date":"2024-07-16T22:31:23","date_gmt":"2024-07-16T22:31:23","guid":{"rendered":"https:\/\/www.marcorubber.com\/blog\/?p=390"},"modified":"2025-03-19T11:09:32","modified_gmt":"2025-03-19T11:09:32","slug":"5-steps-to-choose-the-right-o-ring","status":"publish","type":"post","link":"https:\/\/www.marcorubber.com\/blog\/?p=390","title":{"rendered":"5 Steps to Choose the Right O-Ring"},"content":{"rendered":"<h1><span style=\"font-weight: 400;\">5 Steps To Choose The Right O-Ring<\/span><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-393\" src=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Marco_July24_MCC-1024x768.jpg\" alt=\"\" width=\"800\" height=\"600\" srcset=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Marco_July24_MCC-1024x768.jpg 1024w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Marco_July24_MCC-300x225.jpg 300w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Marco_July24_MCC-768x576.jpg 768w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Marco_July24_MCC.jpg 1200w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">O-rings are robust sealing solutions for nearly endless applications in every industry. They will only work well, though, if you choose the right o-ring from the start. If you use the wrong material, profile, or size, your o-ring\u2019s integrity will inevitably suffer and, ultimately, fail.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The good news is that you have the resources to make the right choice for your team right here. There are essentially five steps to choose the correct o-ring for your application. Barring unique application challenges, you should have the information to make the right decision for your seal after reading through these resources.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you have any questions or unique considerations, our team is happy to help you find a solution quickly.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To determine if that step is necessary, let\u2019s walk through the five steps to choosing the right o-ring for your application.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">1. Identify Your Application\u2019s Challenges<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Before you can do anything else, you need to identify exactly what challenges your o-ring will face. We consider the following:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Chemical exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Ozone exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Operating high temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Operating low temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">High pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Rapid decompression<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Static application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Dynamic application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Weather exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-checked=\"false\" aria-level=\"2\"><span style=\"font-weight: 400;\">Steam or hot amines<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">You should also be aware of any regulatory requirements of your application, such as <\/span><a href=\"https:\/\/www.ams.usda.gov\/sites\/default\/files\/media\/Dairy%20Accepted%20Equipment%20List.pdf\"><span style=\"font-weight: 400;\">USDA 3A<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.marcorubber.com\/medical-o-rings.htm\"><span style=\"font-weight: 400;\">USP CL VI<\/span><\/a><span style=\"font-weight: 400;\">, or <\/span><a href=\"https:\/\/www.accessdata.fda.gov\/scripts\/cdrh\/cfdocs\/cfcfr\/cfrsearch.cfm\"><span style=\"font-weight: 400;\">FDA CFR 21<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Once you have the list of challenges your application will face and relevant regulations, you can get into the meat of choosing your o-ring.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">2. Choose Your O-Ring\u2019s Material(s)<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">One of the most important parts of choosing an o-ring is identifying the right material. A few popular options include FFKM, PTFE, EPDM, and NBR.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">FFKM<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">FFKM overcomes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ozone exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating high temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating low temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rapid decompression<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weather exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Steam or hot amines<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/www.marcorubber.com\/ffkm-o-rings.htm\">FFKM<\/a> is best suited for high- or low-operating temperature applications and applications with aggressive solvents, chemicals, or media that would cause other materials to fail. It is used in almost every industry, particularly oil and gas, medical and pharmaceutical applications, and semiconductors.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">PTFE<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">PTFE overcomes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ozone exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating high temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating low temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rapid decompression<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weather exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Steam or hot amines<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/www.marcorubber.com\/teflon-o-rings.htm\">PTFE<\/a> is best suited for applications that do not need a high compression set but also excellent chemical and temperature resistance. These include medical devices, coatings, and pest control. It also works well in ultra-low temperatures, like aerospace and automotive manufacturing.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">EPDM<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">EPDM overcomes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ozone exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating high temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating low temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rapid decompression<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Weather exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Steam or hot amines<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/www.marcorubber.com\/epdm-o-rings.htm\">EPDM<\/a> is best suited for weatherproofing because it can withstand extreme elements. It is frequently found in roofing, windows, doors, cell towers, and other outdoor applications. It also works well with applications that use steam, automotive brake fluid, vibration dampeners, and isolators.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">NBR<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">NBR overcomes:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical exposure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Operating low temperatures<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">High pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rapid decompression<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static application<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic application<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/www.marcorubber.com\/buna-n-o-rings.htm\">NBR<\/a> is universally used in basic sealing applications because it is low-cost and offers comprehensive benefits and physical properties. We see it often in automotive, water treatment and filtration, and pool and spa applications.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">NBR can be formulated to excel in harsh environments, including aerospace and other low-temperature applications.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Curious About Chemical Compatibility?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Use our <\/span><a href=\"https:\/\/www.marcorubber.com\/o-ring-chemical-compatibility-chart.htm\"><span style=\"font-weight: 400;\">comprehensive chemical compatibility guide<\/span><\/a><span style=\"font-weight: 400;\"> to ensure the material that best meets your needs will also be compatible with the chemicals you use. The guide also includes a cost gauge to help you choose an option in your budget early on.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">3. Choose Your O-Ring\u2019s Profile<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">There are a few common profiles for an o-ring, but there are numerous solutions for a variety of challenges your seal might face. This knowledge is important, but we always have experts ready to help you choose the right material, profile, and size for your seal to ensure success.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With that being said, let\u2019s lay out some profile basics!<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">O-Ring<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">First and foremost, there is the tried and true <\/span><a href=\"https:\/\/www.marcorubber.com\/o-rings.htm\"><span style=\"font-weight: 400;\">o-ring<\/span><\/a><span style=\"font-weight: 400;\">. O-rings are incredibly versatile and offer a wide range of solutions for almost any application and industry. These sealing solutions can also be paired with complementary fittings that help them function better in your application.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pros<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O-rings are incredibly versatile. They are very customizable and come in various materials, colors, sizes, etc.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are one of the most common sealing solutions, making them readily available in a range of standard sizes, materials, and customization options.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because they are so widely available, o-rings are often cost-effective.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you are using o-rings in large quantities, you can purchase o-ring cord, which can be used to splice and vulcanize custom o-rings on-site.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Cons<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O-rings can sometimes be problematic in dynamic applications (twisting, rolling, etc.).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They have limited high-pressure resistance. Thus, backup rings may be needed depending on your application pressure conditions.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">While o-rings are often <\/span><b>a<\/b><span style=\"font-weight: 400;\"> solution, they might not be <\/span><b>the best <\/b><span style=\"font-weight: 400;\">solution for your application.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">X-Ring (or Quad-Rings\u00ae)<\/span><\/h2>\n<p><a href=\"https:\/\/www.marcorubber.com\/quad-ring-seals.htm\"><span style=\"font-weight: 400;\">X-rings (or quad-rings\u00ae)<\/span><\/a><span style=\"font-weight: 400;\"> are similar to o-rings, but their cross-section forms an X with four contact points. These are an alternative to o-rings and are recommended for low-speed reciprocating or oscillatory motions that are twisting, rolling, or bunching.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pros<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X-rings provide less friction than o-rings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They offer four points of contact when sealing.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are interchangeable with o-ring sizes and gland designs, making them an easy substitute.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These o-ring alternatives are available in the same standard sizes and custom sizes as o-rings, while being readily available in USA AS568 standard sized NBR Buna-N and FKM.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Cons<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X-rings are not recommended for pressures &gt;500 psi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">As they are more specialized, x-rings may not be available in all compounds.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are also a little more expensive than standard o-rings.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">U-Cup Lip Seals<\/span><\/h2>\n<p><a href=\"https:\/\/www.marcorubber.com\/u-cup-seals.htm\"><span style=\"font-weight: 400;\">U-cup lip seals<\/span><\/a><span style=\"font-weight: 400;\"> are in the same general shape as an o-ring, but the cross-section is a U. U-cups can function independently, but they also have the unique option of being \u201cloaded.\u201d A loaded u-cup has an o-ring or spring energizer nestled into its internal groove.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">U-cups are designed for dynamic reciprocating applications up to 1250 PSI, but loaded u-cups can handle up to 5,000 PSI.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pros<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">U-cups have longer sealing life than o-rings because they experience lower levels of friction.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These seals are also available in nonsymmetrical rod and piston configurations, which are common applications for u-cup seals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Polypaks\u00ae use an o-ring to provide sealing force at a low pressure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">We can design custom lip seals for existing grooves that are not standard.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Cons<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Unfortunately, u-cups are more difficult to size than o- or x-rings.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are available in a limited array of materials and standard sizes.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">U-cup seals are a more expensive solution than other options.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Glyd Rings\u00ae\u00a0<\/span><\/h2>\n<p><a href=\"https:\/\/www.marcorubber.com\/glide-ring-cap-seal.htm\"><span style=\"font-weight: 400;\">Glyd Rings\u00ae<\/span><\/a><span style=\"font-weight: 400;\"> combine the power of a Turcon-based slipper seal with an energizing o-ring to extend the life of an o-ring in dynamic, reciprocating applications. They use an interference fit that couples with the extra tightness of the o-ring to ensure a quality seal at lower pressure.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Pros<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glyd Rings\u00ae are typically suitable for slow and fast reciprocating speeds running dry or lubricated.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They can withstand pressures up to 3000 PSI in most applications.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They operate at low friction with no stick-slip effect.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glyd Rings\u00ae are compatible with all o-ring materials.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">With a high wear resistance, they also offer minimal break-out force.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Cons<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glyd Rings\u00ae cannot be stretched more than 5% during installation.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are not recommended for oscillating applications.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">4. Size Your O-Ring<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Sizing is by far the trickiest but most important part of choosing an o-ring. When we diagnose failed seals, an improperly sized o-ring is often the culprit.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To start, <\/span><a href=\"https:\/\/www.marcorubber.com\/o-ring-groove-design-directory.htm\"><span style=\"font-weight: 400;\">review gland design basics. <\/span><\/a><span style=\"font-weight: 400;\">Then, you will need to determine the way pressure works in your gland. Your operation will be one of the following:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Internal Pressure<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Internal Vacuum<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic Rod and Piston<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Static Rod and Piston<\/span><\/li>\n<\/ol>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-396\" src=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Gland.png\" alt=\"\" width=\"746\" height=\"671\" srcset=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Gland.png 746w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2024\/07\/Gland-300x270.png 300w\" sizes=\"auto, (max-width: 746px) 100vw, 746px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Now, to determine your sizing, you will want to know the following gland measurements:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For Internal pressure:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Inner Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Depth<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Width<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For Internal Vacuum:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Outer Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Depth<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Width<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For Dynamic Rod and Piston:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Outer Diameter Sealing Width<\/span><\/li>\n<li><span style=\"font-weight: 400;\">D Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">E Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">F Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Inner Diameter Sealing Width<\/span><\/li>\n<li><span style=\"font-weight: 400;\">II Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">I Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">G Diameter<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">For Static Rod and Piston:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Outer Diameter Sealing Width<\/span><\/li>\n<li><span style=\"font-weight: 400;\">D Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">H Gap<\/span><\/li>\n<li><span style=\"font-weight: 400;\">E Bore Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Inner Diameter Sealing Width<\/span><\/li>\n<li><span style=\"font-weight: 400;\">H Gap<\/span><\/li>\n<li><span style=\"font-weight: 400;\">G Tube Diameter<\/span><\/li>\n<li><span style=\"font-weight: 400;\">F Gland Diameter<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Now that you have your important measurements, you can use a comprehensive sizing chart to select the correct sized o-ring. The following links will take you to the corresponding sizing chart for your appropriate region:<\/span><\/p>\n<p><a href=\"https:\/\/www.marcorubber.com\/o-ring-size-chart-as568.htm\"><span style=\"font-weight: 400;\">USA O-Ring Sizing Chart<\/span><\/a><\/p>\n<p><a href=\"https:\/\/www.marcorubber.com\/o-ring-size-chart-metric.htm\"><span style=\"font-weight: 400;\">Common Metric O-Ring Sizing Chart<\/span><\/a><\/p>\n<p><a href=\"https:\/\/www.marcorubber.com\/o-ring-size-chart-japanese.htm\"><span style=\"font-weight: 400;\">Japanese JIS O-Rings Sizing Chart<\/span><\/a><\/p>\n<p><a href=\"https:\/\/www.marcorubber.com\/o-ring-size-chart-british.htm\"><span style=\"font-weight: 400;\">British BS O-Ring Sizing Chart<\/span><\/a><\/p>\n<h2><span style=\"font-weight: 400;\">5. Choose Your Supplier<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Last but certainly not least, you will need to choose your supplier. Your supplier should be your collaborative partner in consolidating and streamlining your sealing needs. To help you identify the exact questions you should be asking suppliers, we\u2019ve included a comprehensive list in our Complete Guide To Choosing An O-Ring.<\/span><\/p>\n<p><a href=\"https:\/\/info.marcorubber.com\/oringguide\"><span style=\"font-weight: 400;\">Get your free copy today!<\/span><\/a><\/p>\n<h3>Related Pages<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.marcorubber.com\/teflon-o-rings.htm\">Teflon O-Rings<\/a><\/li>\n<li><a href=\"https:\/\/www.marcorubber.com\/markez-o-rings.htm\">Markez FFKM O-Rings<\/a><\/li>\n<li><a href=\"https:\/\/www.marcorubber.com\/epdm-o-rings.htm\">EPDM O-Rings<\/a><\/li>\n<li><a href=\"https:\/\/www.marcorubber.com\/buna-n-o-rings.htm\">Buna-N O-Rings<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>5 Steps To Choose The Right O-Ring O-rings are robust sealing solutions for nearly endless applications in every industry. They will only work well, though, if you choose the right o-ring from the start. If you use the wrong material, profile, or size, your o-ring\u2019s integrity will inevitably suffer and, ultimately, fail. The good news [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":392,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-390","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>5 Steps to Choose the Right O-Ring | Marco Rubber and Plastics<\/title>\n<meta name=\"description\" content=\"Learn the five essential steps to choosing the perfect o-ring for your application. Consider the right material, profile, and size to avoid common pitfalls. With expert guidance and comprehensive resources, address challenges like chemical exposure and high pressure. Our team is ready to help with any unique considerations.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.marcorubber.com\/blog\/?p=390\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"5 Steps to Choose the Right O-Ring | Marco Rubber and Plastics\" \/>\n<meta property=\"og:description\" content=\"Learn the five essential steps to choosing the perfect o-ring for your application. Consider the right material, profile, and size to avoid common pitfalls. With expert guidance and comprehensive resources, address challenges like chemical exposure and high pressure. 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