{"id":299,"date":"2023-07-31T13:40:41","date_gmt":"2023-07-31T13:40:41","guid":{"rendered":"https:\/\/www.marcorubber.com\/blog\/?p=299"},"modified":"2024-01-22T22:01:06","modified_gmt":"2024-01-22T22:01:06","slug":"how-to-choose-your-o-ring-for-the-ideal-seal","status":"publish","type":"post","link":"https:\/\/www.marcorubber.com\/blog\/?p=299","title":{"rendered":"How to Choose Your O-Ring for the Ideal Seal"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">So it is time to design your seal, but what will you choose for your sealing ring? There are multiple types of sealing rings, as well as complementary fittings that extend the life of your seal or improve its function. Deciding what is right for your application can be daunting, but it does not have to be.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In this guide, we\u2019ll break down how to choose the right o-ring (or other sealing ring) to prolong the life of your seal and maximize functionality.<\/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>, which also covers <a href=\"https:\/\/www.marcorubber.com\/blog\/what-are-micro-or-miniature-o-rings\/\">micro or miniature<\/a> versions<span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><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 come in a large array of materials, colors, sizes, etc. and are very customizable.<\/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 wide range of standard sizes and materials along with 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 a very cost effective solution.<\/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 back-up rings may be needed depending on your application pressure conditions.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Applications<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Almost anything! O-rings are the go-to answer for a reason, but\u2026<\/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;\"> have a similar shape to o-rings, but their cross section forms an X, with four contact points. These are an alternative to o-rings and recommended for low speed reciprocating or oscillatory motions where they 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 are interchangeable with o-ring sizes and gland design, 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<h3><span style=\"font-weight: 400;\">Applications<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X-rings can be used anywhere an o-ring is used, but they are best utilized for reciprocating applications. For example, x-rings are often used effectively in syringes, where the reciprocating action of extracting and moving the liquid would cause an o-ring to twist.<\/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 on their own, 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 non symmetrical rod and piston configurations, which are common applications that use 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;\">For non-standard existing grooves, we can design custom lip seals.<\/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<h3><span style=\"font-weight: 400;\">Applications<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">U-cup seals have a more limited range of applications than o- or x-rings but they are highly suited for use in:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic applications,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rod and piston seals,<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">And hydraulic applications.<\/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 and 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<h3><span style=\"font-weight: 400;\">Applications<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Glyd Rings\u00ae are most commonly used for piston seals in dynamic applications.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400;\">Back-up Rings<\/span><\/h2>\n<p><a href=\"https:\/\/www.marcorubber.com\/o-ring-backup-rings.htm\"><span style=\"font-weight: 400;\">Back-up rings<\/span><\/a><span style=\"font-weight: 400;\"> are installed alongside o-rings in the extrusion gap to protect the seal from extrusion at high pressures and temperatures. They are flat, split, spiral, or contoured to fit snugly like a washer. As they block the extrusion gap, they prevent the o-ring from extruding.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Back-up rings can prevent damage to the o-ring, resist extrusion, improve performance, and stop leaks. Ultimately, they improve the performance and life of your seal!<\/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;\">Back-up rings are available in elastomeric and PTFE compounds.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PTFE back-up rings can be solid, split, spiral, or custom to help make installation easier.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PTFE back-up rings are readily available in standard sizes, such as AN6244, AN6246, MS27595, MS28774, MS28782, and MS28783.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Elastomer back-up rings easily fit standard o-ring sizes.<\/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;\">Due to the nature of having two o-rings in the groove, back-up rings require a wider gland to accommodate them.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">While very beneficial, they are an added expense.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A standard PTFE size back-up ring will not work in a standard size static o-ring groove. It will prevent the hardware from assembling.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Solid back-up rings do not stretch for installation.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400;\">Applications<\/span><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Back-up o-rings best work in high pressure applications where the original o-ring will be tested, such as in high pressure valves and hydraulic systems.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-300 size-large\" src=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-1024x768.jpg\" alt=\"How to Choose Your O-Ring for the Ideal Seal\" width=\"800\" height=\"600\" srcset=\"https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-1024x768.jpg 1024w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-300x225.jpg 300w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-768x576.jpg 768w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-1536x1152.jpg 1536w, https:\/\/blog.marcorubber.com\/wp-content\/uploads\/2023\/07\/Marco_JULY_MCC_differentseals2-2048x1536.jpg 2048w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">The Ultimate Way to Choose Your Sealing Solution<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">As you can see, o-rings are often <\/span><b>a<\/b><span style=\"font-weight: 400;\"> solution but are not always <\/span><b>the<\/b><span style=\"font-weight: 400;\"> solution for your application. Depending on the temperature, pressure, and dynamic nature of your application, another type of seal might be the solution for you.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Before you design your seal around an option that might not be optimal for your application, consider talking to a seal professional.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">These experts can help you:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Identify the unique trigger points in your seal that could cause a failure.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Develop a custom or standard solution so you save your time, energy, and effort for other parts of the design.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feel secure that you are getting the most out of your seal.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Avoid downtime, expensive redesigns, and hazardous messes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">You have a lot of tasks on your plate, and becoming a sealing expert does not have to be one of them. Our experts can quickly identify a viable solution for your application so that you don\u2019t have to go back to the drawing board if your seal does not function properly.<\/span><\/p>\n<p><a href=\"https:\/\/www.marcorubber.com\/inquiry-quote.htm\"><span style=\"font-weight: 400;\">So talk to an expert today!<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>So it is time to design your seal, but what will you choose for your sealing ring? There are multiple types of sealing rings, as well as complementary fittings that extend the life of your seal or improve its function. Deciding what is right for your application can be daunting, but it does not have [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":301,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-299","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>How to Choose Your O-Ring for the Ideal Seal | Marco Rubber and Plastics<\/title>\n<meta name=\"description\" content=\"O-rings are often a solution for the seal, but alternative forms of seals might be a better option for high pressure, dynamic applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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