{"id":856,"date":"2025-03-18T10:06:09","date_gmt":"2025-03-18T02:06:09","guid":{"rendered":"https:\/\/hengoseal.com\/?p=856"},"modified":"2025-05-20T10:44:04","modified_gmt":"2025-05-20T02:44:04","slug":"hydraulic-vs-pneumatic-seals","status":"publish","type":"post","link":"https:\/\/hengoseal.com\/ja\/hydraulic-vs-pneumatic-seals\/","title":{"rendered":"Hydraulic vs. Pneumatic Seals: What\u2019s the Difference and Which Should You Use?"},"content":{"rendered":"<p>Choosing the wrong seal type can lead to performance failures and higher maintenance costs. I\u2019ve seen systems shut down simply because a hydraulic seal was used where a pneumatic one was needed\u2014or vice versa.<\/p>\n<p>Hydraulic seals are built for high-pressure fluid systems, while pneumatic seals are ideal for low-pressure air systems. This article helps you choose the right one based on pressure, material, and application.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/hengoseal.com\/wp-content\/uploads\/2025\/05\/QYD-Pneumatic-Cylinder-Seals.png\" alt=\"placeholder_image\" \/><\/p>\n<h2>What is the difference between hydraulic and pneumatic seals?<\/h2>\n<p>While both prevent leaks and contain pressure, they\u2019re designed for different types of systems.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/hengoseal.com\/wp-content\/uploads\/2025\/05\/Pneumatic-Seal.jpg\" alt=\"placeholder_image\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5fb4<\/th>\n<th><a href=\"https:\/\/hengoseal.com\/ja\/hydraulic-seals\/\" target=\"_blank\">\u6cb9\u5727\u30b7\u30fc\u30eb<\/a><\/th>\n<th><a href=\"https:\/\/hengoseal.com\/ja\/pneumatic-seals\/\" target=\"_blank\">\u7a7a\u6c17\u5727\u30b7\u30fc\u30eb<\/a><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u52d5\u4f5c\u5a92\u4f53<\/td>\n<td>Liquid (Oil, Water)<\/td>\n<td>\u5727\u7e2e\u7a7a\u6c17\u307e\u305f\u306f\u30ac\u30b9<\/td>\n<\/tr>\n<tr>\n<td>\u5727\u529b\u51e6\u7406<\/td>\n<td>Up to 10,000 PSI<\/td>\n<td>Up to 250 PSI<\/td>\n<\/tr>\n<tr>\n<td>\u6750\u6599\u69cb\u6210<\/td>\n<td>PTFE, FKM, NBR, TPU<\/td>\n<td>TPU, NBR, Silicone<\/td>\n<\/tr>\n<tr>\n<td>\u6e29\u5ea6\u7bc4\u56f2<\/td>\n<td>-40\u00b0C \uff5e 200\u00b0C<\/td>\n<td>-30\u00b0C \uff5e 100\u00b0C<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/td>\n<td><a href=\"https:\/\/hengoseal.com\/ja\/hydraulic-seals-for-excavators\/\" target=\"_blank\">Heavy equipment<\/a>, <a href=\"https:\/\/hengoseal.com\/ja\/hydraulic-seals-industrial-applications\/\" target=\"_blank\">\u5de5\u696d\u7528\u6cb9\u5727<\/a><\/td>\n<td><a href=\"https:\/\/hengoseal.com\/ja\/pneumatic-seals-guide\/\" target=\"_blank\">\u30ed\u30dc\u30c3\u30c8\u5de5\u5b66<\/a>, <a href=\"https:\/\/hengoseal.com\/ja\/high-performance-pneumatic-seals\/\" target=\"_blank\">automation<\/a>, packaging<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>What are the ideal applications for hydraulic seals?<\/h2>\n<p>Hydraulic seals are best suited for environments with extreme pressure and heat.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/hengoseal.com\/wp-content\/uploads\/2025\/03\/UPH-Hydraulic-Seals.jpg\" alt=\"placeholder_image\" \/><\/p>\n<p>They are used in:<\/p>\n<ul>\n<li>Mining and excavation equipment<\/li>\n<li>Press machines and lifts<\/li>\n<li>Oilfield and marine hydraulics<\/li>\n<\/ul>\n<p>We often recommend <a href=\"https:\/\/hengoseal.com\/ja\/product\/un-hydraulic-seal\/\" target=\"_blank\">UN hydraulic rod seals<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/hengoseal.com\/ja\/product\/kdas-compact-seal\/\" target=\"_blank\">KDAS buffer seals<\/a> for high-pressure cylinders in industrial settings.<\/p>\n<h2>What are the benefits of pneumatic seals in automation?<\/h2>\n<p>Pneumatic seals thrive in systems where speed and cleanliness matter more than pressure.<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/hengoseal.com\/wp-content\/uploads\/2025\/05\/QYD-Pneumatic-Cylinder-Seals.png\" alt=\"placeholder_image\" \/><\/p>\n<p>\u4ee5\u4e0b\u306e\u5834\u5408\u306b\u6700\u9069\u3067\u3059:<\/p>\n<ul>\n<li>Assembly line actuators<\/li>\n<li>Medical and pharmaceutical tools<\/li>\n<li>Food and electronics packaging lines<\/li>\n<\/ul>\n<p>In these environments, we\u2019ve seen great results with <a href=\"https:\/\/hengoseal.com\/ja\/product\/seal-pneumatic-cylinder-supplier\/\" target=\"_blank\">TPU-based pneumatic cylinder seals<\/a> \u305d\u3057\u3066 <a href=\"https:\/\/hengoseal.com\/ja\/product\/buffer-seals-cushion-rings\/\" target=\"_blank\">buffer rings<\/a> for shock absorption.<\/p>\n<h2>How do you extend seal lifespan in both systems?<\/h2>\n<p>Proper maintenance can double seal lifespan.<\/p>\n<p>Tips:<\/p>\n<ol>\n<li>Inspect seals monthly for cracking or swelling<\/li>\n<li>Use correct lubricants and operating pressure<\/li>\n<li>Keep systems free of dust or fluid contamination<\/li>\n<li>Choose the right kit from the start\u2014like our <a href=\"https:\/\/hengoseal.com\/ja\/product\/hydraulic-seal-kit-by-size\/\" target=\"_blank\">standard &amp; custom hydraulic seal kits<\/a><\/li>\n<\/ol>\n<h2>\u7d50\u8ad6<\/h2>\n<p>Hydraulic for power and pressure, pneumatic for precision and speed. Each seal type has a role\u2014choose wisely for maximum efficiency.<\/p>\n<h2>Let\u2019s help you match the right seal to your system<\/h2>\n<p>\ud83d\udce9 Email\uff1ainfo@hengoseal.com<br \/>\n\ud83d\udcde WhatsApp\uff1a+86 17622979498<\/p>\n<h2>Related topic<\/h2>\n<p><a href=\"https:\/\/hengoseal.com\/ja\/hydraulic-seals-guide\/\" target=\"_blank\">How to Choose and Replace Hydraulic Seals<\/a><br \/>\n<a href=\"https:\/\/hengoseal.com\/ja\/high-performance-pneumatic-seals\/\" target=\"_blank\">High-Performance Pneumatic Seal Guide<\/a><br \/>\n<a href=\"https:\/\/hengoseal.com\/ja\/extend-pneumatic-seal-lifespan\/\" target=\"_blank\">How to Extend the Lifespan of Pneumatic Seals<\/a><\/p>\n<style>\n.faq-question {\ncursor: pointer;\nfont-weight: bold;\npadding: 10px;\nbackground-color: #f1f1f1;\nborder: 1px solid #ddd;\nmargin-bottom: 5px;\ncolor: #0073aa;\n}\n.faq-answer {\ndisplay: none;\npadding: 10px;\nborder-left: 3px solid #0073aa;\nbackground-color: #f9f9f9;\nmargin-bottom: 10px;\n}\n<\/style>\n<p><script>\ndocument.addEventListener('DOMContentLoaded', function() {\nconst questions = document.querySelectorAll('.faq-question');\nquestions.forEach(question => {\nquestion.addEventListener('click', function() {\nconst answer = this.nextElementSibling;\nanswer.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\": \"Can I use hydraulic seals in pneumatic systems?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Not recommended&mdash;hydraulic seals may cause drag or premature wear in air systems.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Which lasts longer: hydraulic or pneumatic seals?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Hydraulic seals generally last longer due to higher material strength.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Do pneumatic seals need lubrication?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Some do, but many are designed for dry-running with minimal maintenance.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Which material works best for high temperature?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"PTFE and FKM are preferred for high-heat environments.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Are pneumatic seals cheaper?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Yes, typically due to lower design complexity and pressure requirements.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"How often should seals be replaced?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Every 6&ndash;18 months depending on usage intensity.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Do you offer custom-sized seals?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Yes, we provide full custom sealing solutions with no MOQ.\"\n}\n},\n{\n\"@type\": \"Question\",\n\"name\": \"Where can I get both types of seals quickly?\",\n\"acceptedAnswer\": {\n\"@type\": \"Answer\",\n\"text\": \"Hengoseal ships globally with 7&ndash;15 day lead times.\"\n}\n}\n]\n}\n<\/script><\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<div class=\"faq-container\">\n<div class=\"faq-question\">1. Can I use hydraulic seals in pneumatic systems?<\/div>\n<div class=\"faq-answer\">Not recommended\u2014hydraulic seals may cause drag or premature wear in air systems.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">2. Which lasts longer: hydraulic or pneumatic seals?<\/div>\n<div class=\"faq-answer\">Hydraulic seals generally last longer due to higher material strength.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">3. Do pneumatic seals need lubrication?<\/div>\n<div class=\"faq-answer\">Some do, but many are designed for dry-running with minimal maintenance.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">4. Which material works best for high temperature?<\/div>\n<div class=\"faq-answer\">PTFE and FKM are preferred for high-heat environments.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">5. Are pneumatic seals cheaper?<\/div>\n<div class=\"faq-answer\">Yes, typically due to lower design complexity and pressure requirements.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">6. How often should seals be replaced?<\/div>\n<div class=\"faq-answer\">Every 6\u201318 months depending on usage intensity.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">7. Do you offer custom-sized seals?<\/div>\n<div class=\"faq-answer\">Yes, we provide full custom sealing solutions with no MOQ.<\/div>\n<\/div>\n<div class=\"faq-container\">\n<div class=\"faq-question\">8. Where can I get both types of seals quickly?<\/div>\n<div class=\"faq-answer\">Hengoseal ships globally with 7\u201315 day lead times.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Choosing the wrong seal type can lead to performance failures and higher maintenance costs. I\u2019ve seen systems shut down simply [&hellip;]<\/p>","protected":false},"author":1,"featured_media":857,"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":[38,53,39],"tags":[],"class_list":["post-856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydraulic-seals","category-buying-guide","category-pneumatic-seals"],"_links":{"self":[{"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/posts\/856","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/comments?post=856"}],"version-history":[{"count":0,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/posts\/856\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/media\/857"}],"wp:attachment":[{"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/media?parent=856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/categories?post=856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hengoseal.com\/ja\/wp-json\/wp\/v2\/tags?post=856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}