{"id":315,"date":"2026-08-27T01:56:36","date_gmt":"2026-08-27T01:56:36","guid":{"rendered":"https:\/\/fenggu-bio.com\/airtight-doors-inflatable-vs-mechanical\/"},"modified":"2026-08-27T01:56:36","modified_gmt":"2026-08-27T01:56:36","slug":"airtight-doors-inflatable-vs-mechanical","status":"publish","type":"post","link":"https:\/\/fenggu-bio.com\/ru\/airtight-doors-inflatable-vs-mechanical\/","title":{"rendered":"Airtight Doors: Inflatable-Seal vs Mechanical-Compression"},"content":{"rendered":"<style>\n.entry-title,.ast-single-post .entry-header{display:none!important}\n.fg-art{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,\"Helvetica Neue\",Arial,sans-serif;color:#1e2838;line-height:1.72;max-width:820px;margin:0 auto;padding:0 22px;font-size:16.5px}\n.fg-art .fg-eyebrow{display:inline-block;background:#e3ecfa;color:#003AA1;font-weight:700;font-size:12px;letter-spacing:.7px;padding:5px 13px;border-radius:20px;text-transform:uppercase;margin:34px 0 14px}\n.fg-art h1{font-size:33px;line-height:1.2;color:#002B78;margin:0 0 12px;font-weight:800}\n.fg-art .meta{font-size:13.5px;color:#7a8699;margin:0 0 26px;border-bottom:1px solid #e6ebf3;padding-bottom:18px}\n.fg-art h2{font-size:23px;color:#002B78;margin:38px 0 12px;line-height:1.28}\n.fg-art p{margin:0 0 16px}\n.fg-art .lead{font-size:18px;color:#3a4658}\n.fg-art figure{margin:26px 0}\n.fg-art img{width:100%;border-radius:12px;box-shadow:0 6px 22px rgba(0,58,161,.12);display:block}\n.fg-art figcaption{font-size:13px;color:#7a8699;margin-top:9px;text-align:center}\n.fg-art table{border-collapse:collapse;width:100%;margin:22px 0;font-size:14.5px}\n.fg-art th,.fg-art td{border:1px solid #d7dfea;padding:11px 14px;text-align:left;vertical-align:top}\n.fg-art thead th{background:#002B78;color:#fff;font-weight:700}\n.fg-art tbody th{background:#eff4fb;color:#002B78;font-weight:700;width:24%}\n.fg-art tbody tr:nth-child(even) td{background:#f7f9fc}\n.fg-art ul{margin:0 0 16px;padding-left:22px}.fg-art li{margin:7px 0}\n.fg-art .fg-cta{background:linear-gradient(120deg,#002B78,#003AA1);color:#fff;border-radius:14px;padding:30px 28px;margin:38px 0 10px;text-align:center}\n.fg-art .fg-cta h3{color:#fff;font-size:22px;margin:0 0 8px}\n.fg-art .fg-cta p{color:#dce7f7;margin:0 0 18px;font-size:15.5px}\n.fg-art .fg-btn{display:inline-block;background:#EC001B;color:#fff;padding:13px 28px;border-radius:6px;font-weight:600;font-size:15.5px;text-decoration:none;margin:0 6px 8px}\n.fg-art .fg-btn.o{background:transparent;border:2px solid rgba(255,255,255,.7)}\n.fg-art a{color:#003AA1;text-decoration:underline}\n.fg-art .fg-cta a{text-decoration:none;color:#fff}\n@media(max-width:640px){.fg-art h1{font-size:26px}.fg-art th,.fg-art td{padding:9px 10px;font-size:13.5px}.fg-art tbody th{width:34%}}\n<\/style>\n<article class=\"fg-art\">\n<span class=\"fg-eyebrow\">Containment<\/span><\/p>\n<h1>Airtight Doors: Inflatable-Seal vs Mechanical-Compression<\/h1>\n<div class=\"meta\">By Fenggu Medical Equipment &middot; Pharmaceutical Isolation &amp; Containment<\/div>\n<p class=\"lead\">In high-containment facilities &mdash; BSL-3\/4 laboratories, animal containment (ABSL) and high-potency pharmaceutical suites &mdash; an ordinary door is a leak. During gaseous decontamination or fumigation the room must hold a defined pressure with almost no leakage, and that job falls to the <strong>airtight (bioseal) door<\/strong>. Two sealing technologies dominate: the <strong>inflatable-seal<\/strong> door and the <strong>mechanical-compression<\/strong> door. They reach similar airtightness by very different means &mdash; and the right choice usually comes down to one question: do you have reliable compressed air?<\/p>\n<figure>\n<img width=\"624\" height=\"1205\" decoding=\"async\" src=\"\/wp-content\/uploads\/site\/inflatable-seal-airtight-door-01.jpg\" alt=\"Inflatable-seal airtight bioseal door for BSL-3\/4 containment\"><figcaption>Airtight doors maintain the containment boundary during decontamination and fumigation.<\/figcaption><\/figure>\n<h2>Why airtight doors matter<\/h2>\n<p>Containment rooms run at a controlled negative pressure and are periodically decontaminated with a gas such as vaporized hydrogen peroxide or formaldehyde. If the door leaks, the pressure cascade collapses and the decontaminant escapes. An airtight door therefore has to do two things well: hold structural pressure without deforming, and seal its perimeter tight enough that leakage stays within a validated limit.<\/p>\n<h2>Inflatable-seal airtight door<\/h2>\n<p>The <a href=\"\/ru\/products\/inflatable-seal-airtight-door\/\">inflatable-seal door<\/a> carries a gasket in the door leaf that stays retracted while the door swings, then inflates against the frame once closed &mdash; forming a continuous, even airtight band. It gives an extremely tight seal (leak &lt; 0.25% volume\/hour at +500 Pa, structural resistance &ge; 2500 Pa) and seals or releases in about 5 seconds, with a service life beyond 10,000 cycles. The trade-off: it needs a reliable compressed-air supply (inflation pressure around 1.5 kg\/cm&sup2;) and power.<\/p>\n<h2>Mechanical-compression airtight door<\/h2>\n<p>The <a href=\"\/ru\/products\/mechanical-compression-airtight-door\/\">mechanical-compression door<\/a> seals by physically clamping the leaf against a high-density gasket &mdash; no compressed air involved. That makes it dependable exactly where air or power supply cannot be guaranteed, which is why it is favoured in high-level animal and microbiology containment. Independent pressure-decay testing has shown a minute leak rate of 0.024% (holding to &minus;1095 Pa, decaying only to &minus;974 Pa over 20 minutes) and structural resistance of &minus;2500 Pa held for 10 minutes with no deformation.<\/p>\n<h2>Inflatable vs mechanical at a glance<\/h2>\n<table>\n<thead>\n<tr>\n<th>Factor<\/th>\n<th>Inflatable-seal<\/th>\n<th>Mechanical-compression<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Sealing method<\/th>\n<td>Inflatable gasket (compressed air)<\/td>\n<td>Mechanical clamping<\/td>\n<\/tr>\n<tr>\n<th>\u0413\u0435\u0440\u043c\u0435\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c<\/th>\n<td>&lt; 0.25% vol\/h @ +500 Pa<\/td>\n<td>~0.024% (tested, pressure-decay)<\/td>\n<\/tr>\n<tr>\n<th>\u041a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u0438\u0432\u043d\u0430\u044f \u043f\u0440\u043e\u0447\u043d\u043e\u0441\u0442\u044c<\/th>\n<td>\u2265 2500 \u041f\u0430<\/td>\n<td>\u22122500 \u041f\u0430, \u0431\u0435\u0437 \u0434\u0435\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438<\/td>\n<\/tr>\n<tr>\n<th>Needs compressed air<\/th>\n<td>Yes<\/td>\n<td>No<\/td>\n<\/tr>\n<tr>\n<th>Seal \/ release<\/th>\n<td>~5 s, automatic<\/td>\n<td>On close (manual or powered)<\/td>\n<\/tr>\n<tr>\n<th>Best for<\/th>\n<td>BSL-3\/4 fumigation with air supply<\/td>\n<td>Air\/power-independent containment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>How to choose<\/h2>\n<ul>\n<li><strong>Choose inflatable-seal<\/strong> when a stable compressed-air supply is available and you want the tightest, fastest automatic seal &mdash; typical for BSL-3\/4 rooms on a regular fumigation cycle.<\/li>\n<li><strong>Choose mechanical-compression<\/strong> when independence from air and power matters, or in facilities (animal containment, remote suites) where a supply interruption must never compromise the seal.<\/li>\n<\/ul>\n<h2>Don&#8217;t forget the ductwork<\/h2>\n<p>A room is only as airtight as its weakest boundary &mdash; and that includes the HVAC. When you seal a room for decontamination, the supply and exhaust ducts must close too. A <a href=\"\/ru\/products\/biosafety-isolation-damper\/\">biosafety isolation damper<\/a> (bubble-tight, high-density EPDM) isolates the ductwork to the same standard, so the whole envelope holds pressure together.<\/p>\n<div class=\"fg-cta\">\n<h3>Specifying airtight doors for a containment suite?<\/h3>\n<p>Tell us your biosafety level, room pressures and whether compressed air is available, and our engineers will recommend the right sealing technology.<\/p>\n<p><a class=\"fg-btn\" href=\"\/ru\/products\/inflatable-seal-airtight-door\/\">View Airtight Doors<\/a><br \/>\n<a class=\"fg-btn o\" href=\"\/ru\/contact\/\">Talk to an Engineer<\/a>\n<\/div>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Containment Airtight Doors: Inflatable-Seal vs Mechanical-Compression By Fenggu Medical Equipment &middot; Pharmaceutical Isolation &amp; Containment In high-containment facilities &mdash; BSL-3\/4 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","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":[1],"tags":[],"class_list":["post-315","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/315","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/comments?post=315"}],"version-history":[{"count":0,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/posts\/315\/revisions"}],"wp:attachment":[{"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/media?parent=315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/categories?post=315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fenggu-bio.com\/ru\/wp-json\/wp\/v2\/tags?post=315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}