{"id":1149,"date":"2025-04-21T09:58:25","date_gmt":"2025-04-21T01:58:25","guid":{"rendered":"https:\/\/hengoseal.com\/?p=1149"},"modified":"2025-04-21T09:58:25","modified_gmt":"2025-04-21T01:58:25","slug":"o-ring-buying-guide","status":"publish","type":"post","link":"https:\/\/hengoseal.com\/uk\/o-ring-buying-guide\/","title":{"rendered":"O Ring Buying Guide: How to Choose the Perfect Seal for Your Needs"},"content":{"rendered":"<p>Choosing the right o ring can be more complex than it sounds. The material, size, hardness, and even color all affect the performance of your sealing system.<\/p>\n<p>In this <strong>O ring buying guide<\/strong>, we\u2019ll break down everything you need to know to make the best choice for your application, whether you\u2019re working with hydraulic systems, automotive repairs, or industrial machinery.<\/p>\n<p>Let\u2019s get started!<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/hengoseal.com\/wp-content\/uploads\/2025\/03\/O-Ring-Assortment-1.jpg\" alt=\"placeholder_image\" \/><\/p>\n<h2>How to choose the right o ring material?<\/h2>\n<p>The most important factor in o ring selection is the <strong>material<\/strong>. Each material has unique properties that make it more suited for specific applications.<\/p>\n<h3>Common O Ring Materials:<\/h3>\n<ul>\n<li><strong>NBR (\u043d\u0456\u0442\u0440\u0438\u043b)<\/strong>: Best for oils, fuels, and water. Ideal for general industrial use.<\/li>\n<li><strong>\u0412\u0456\u0442\u043e\u043d (FKM)<\/strong>: Excellent resistance to high heat, fuels, and chemicals. Ideal for automotive and industrial systems exposed to high temperatures.<\/li>\n<li><strong>\u0421\u0438\u043b\u0456\u043a\u043e\u043d<\/strong>: Soft and flexible, great for low-pressure water and food applications.<\/li>\n<li><strong>EPDM<\/strong>: Best for steam and water. Offers great ozone and UV resistance.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/hengoseal.com\/uk\/high-temperature-o-ring-kit-vitons\/\" target=\"_blank\">Need a high-temperature solution? Check our Viton O Ring Kit<\/a>.<\/p>\n<h2>How to determine the right o ring size?<\/h2>\n<p>Choosing the correct size is crucial for the seal\u2019s performance. An improperly sized o ring can cause leaks or failures in your system.<\/p>\n<p><strong>Here\u2019s how to measure:<\/strong><\/p>\n<ol>\n<li><strong>\u0412\u043d\u0443\u0442\u0440\u0456\u0448\u043d\u0456\u0439 \u0434\u0456\u0430\u043c\u0435\u0442\u0440 (ID)<\/strong>: This is the diameter of the groove the o ring will sit in.<\/li>\n<li><strong>\u0417\u043e\u0432\u043d\u0456\u0448\u043d\u0456\u0439 \u0434\u0456\u0430\u043c\u0435\u0442\u0440 (OD)<\/strong>: This is the total diameter of the o ring once it\u2019s installed.<\/li>\n<li><strong>\u041f\u043e\u043f\u0435\u0440\u0435\u0447\u043d\u0438\u0439 \u043f\u0435\u0440\u0435\u0440\u0456\u0437 (CS)<\/strong>: The thickness of the o ring (usually the same as the width of the groove).<\/li>\n<\/ol>\n<p>\u0412\u0438\u043a\u043e\u0440\u0438\u0441\u0442\u043e\u0432\u0443\u0439\u0442\u0435 \u043d\u0430\u0448 <a href=\"https:\/\/hengoseal.com\/uk\/o-ring-kit-inch-metric-assortment\/\" target=\"_blank\">O Ring Kit Assortment<\/a> to easily compare and match common sizes.<\/p>\n<h2>What\u2019s the difference between standard and custom o rings?<\/h2>\n<p>Standard o rings are widely available in common sizes and materials. However, if your application requires a unique size, shape, or material, you\u2019ll need <strong>custom o rings<\/strong>.<\/p>\n<p>Custom o rings offer:<\/p>\n<ul>\n<li><strong>Non-standard sizes<\/strong>: You can request o rings in any diameter or cross-section.<\/li>\n<li><strong>Specialized materials<\/strong>: For high-pressure, food-grade, or chemical applications.<\/li>\n<li><strong>Tailored packaging<\/strong>: Perfect for distributors or businesses needing branded kits.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/hengoseal.com\/uk\/custom-size-o-rings\/\" target=\"_blank\">Learn more about custom o ring manufacturing \u2192<\/a><\/p>\n<h2>Should I choose a kit or buy individual o rings?<\/h2>\n<p>It depends on your needs:<\/p>\n<ul>\n<li><strong>Kits<\/strong>: Convenient for most maintenance work, providing a range of sizes. Perfect for mechanics, repair shops, and emergency use.<\/li>\n<li><strong>Individual rings<\/strong>: Best for large projects or OEMs requiring specific quantities or sizes.<\/li>\n<\/ul>\n<p>\u043d\u0430\u0448 <a href=\"https:\/\/hengoseal.com\/uk\/product\/o-ring-assortment\/\" target=\"_blank\">\u0410\u0441\u043e\u0440\u0442\u0438\u043c\u0435\u043d\u0442\u043d\u0456 \u043d\u0430\u0431\u043e\u0440\u0438 O Ring<\/a> offer 200\u2013400 pieces in multiple sizes, ideal for DIY repairs or small businesses.<\/p>\n<h2>Can I mix materials in one o ring kit?<\/h2>\n<p>Yes. You can choose mixed-material kits to match the specific needs of your system. For example:<\/p>\n<ul>\n<li><strong>NBR for fuel systems<\/strong> + <strong>Viton for heat resistance<\/strong>  <\/li>\n<li><strong>Silicone for water pipes<\/strong> + <strong>EPDM for UV protection<\/strong><\/li>\n<\/ul>\n<p>We offer customizable kits that include various materials, ideal for comprehensive repair work.<\/p>\n<h2>What\u2019s the ideal hardness for o rings?<\/h2>\n<p>O rings come in different hardness grades, typically measured on the <strong>Shore A scale<\/strong>:<\/p>\n<ul>\n<li><strong>Soft (40\u201350 Shore A)<\/strong>: Best for low-pressure or flexible seals.<\/li>\n<li><strong>Medium (50\u201370 Shore A)<\/strong>: Standard for most general applications.<\/li>\n<li><strong>Hard (70\u201390 Shore A)<\/strong>: Suitable for high-pressure systems.<\/li>\n<\/ul>\n<p>Always check your application requirements before choosing the hardness to avoid seal failure.<\/p>\n<h2>Final Thoughts on Buying O Rings<\/h2>\n<p>Choosing the right o ring can be a simple process once you understand your system\u2019s needs. By considering the material, size, hardness, and application, you\u2019ll ensure optimal sealing performance and system longevity.<\/p>\n<h2>Request a Quote for Your O Ring Kits<\/h2>\n<p>Need more information or a quote for your custom or standard o ring needs?<\/p>\n<p>\ud83d\udce9 <strong>\u0415\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u0430 \u043f\u043e\u0448\u0442\u0430:<\/strong> info@hengoseal.com<br \/>\n\ud83d\udcf1 <strong>WhatsApp:<\/strong> +86 17622979498<br \/>\nGet your o ring kits today, and we\u2019ll provide the best material options and fast shipping worldwide.<\/p>\n<style>\n.faq-question {\n    cursor: pointer;\n    font-weight: bold;\n    padding: 10px;\n    background-color: #f1f1f1;\n    border: 1px solid #ddd;\n    margin-bottom: 5px;\n    color: #0073aa;\n}\n.faq-answer {\n    display: none;\n    padding: 10px;\n    border-left: 3px solid #0073aa;\n    background-color: #f9f9f9;\n    margin-bottom: 10px;\n}\n<\/style>\n<p><script>\ndocument.addEventListener('DOMContentLoaded', function() {\n    const questions = document.querySelectorAll('.faq-question');\n    questions.forEach(question => {\n        question.addEventListener('click', function() {\n            const answer = this.nextElementSibling;\n            answer.style.display = answer.style.display === 'block' ? 'none' : 'block';\n        });\n    });\n});\n<\/script><br \/>\n<!-- JSON-LD FAQ Schema --><br \/>\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I know if I need a custom or standard o ring?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"If your equipment uses standard groove dimensions, a standard o ring is enough. For unique sizes, go for custom-made.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can o rings be used for extreme heat applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, Viton and Silicone o rings can handle high heat, while PTFE is the best for extreme temperatures.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do you offer bulk orders for o ring kits?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, we offer bulk orders and custom packaging for distributors and retailers.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use silicone o rings in fuel systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No, silicone o rings are not suitable for fuel systems. Use NBR or Viton for fuel exposure.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do you provide o rings with FDA approval?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. We offer FDA-approved materials, including silicone and PTFE.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I mix different o ring materials in a single kit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, you can. We offer customized kits with different materials for specific applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What&rsquo;s the shelf life of o rings?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"O rings typically last 5&ndash;10 years if stored in a cool, dry place away from direct sunlight.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I store o rings properly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Store o rings in a sealed, dark container to prevent degradation from light, ozone, or moisture.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n<h2>\u041b\u044e\u0434\u0438 \u0442\u0430\u043a\u043e\u0436 \u0437\u0430\u043f\u0438\u0442\u0443\u044e\u0442\u044c<\/h2>\n<div class=\"faq-container\">\n<div class=\"faq-question\">1. How do I know if I need a custom or standard o ring?<\/div>\n<div class=\"faq-answer\">If your equipment uses standard groove dimensions, a standard o ring is enough. For unique sizes, go for custom-made.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">2. Can o rings be used for extreme heat applications?<\/div>\n<div class=\"faq-answer\">Yes, Viton and Silicone o rings can handle high heat, while PTFE is the best for extreme temperatures.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">3. Do you offer bulk orders for o ring kits?<\/div>\n<div class=\"faq-answer\">Yes, we offer bulk orders and custom packaging for distributors and retailers.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">4. Can I use silicone o rings in fuel systems?<\/div>\n<div class=\"faq-answer\">No, silicone o rings are not suitable for fuel systems. Use NBR or Viton for fuel exposure.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">5. Do you provide o rings with FDA approval?<\/div>\n<div class=\"faq-answer\">Yes. We offer FDA-approved materials, including silicone and PTFE.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">6. Can I mix different o ring materials in a single kit?<\/div>\n<div class=\"faq-answer\">Yes, you can. We offer customized kits with different materials for specific applications.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">7. What\u2019s the shelf life of o rings?<\/div>\n<div class=\"faq-answer\">O rings typically last 5\u201310 years if stored in a cool, dry place away from direct sunlight.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">8. How do I store o rings properly?<\/div>\n<div class=\"faq-answer\">Store o rings in a sealed, dark container to prevent degradation from light, ozone, or moisture.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Choosing the right o ring can be more complex than it sounds. The material, size, hardness, and even color all [&hellip;]<\/p>","protected":false},"author":1,"featured_media":956,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[37],"tags":[],"class_list":["post-1149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-o-ring-seals"],"_links":{"self":[{"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/posts\/1149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/comments?post=1149"}],"version-history":[{"count":0,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/posts\/1149\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/media\/956"}],"wp:attachment":[{"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/media?parent=1149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/categories?post=1149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hengoseal.com\/uk\/wp-json\/wp\/v2\/tags?post=1149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}