{"id":327,"date":"2014-02-18T19:13:12","date_gmt":"2014-02-18T19:13:12","guid":{"rendered":"http:\/\/localhost\/mdaturbines.com\/?page_id=327"},"modified":"2026-03-19T16:27:11","modified_gmt":"2026-03-19T20:27:11","slug":"guardian-packing","status":"publish","type":"page","link":"https:\/\/www.mdaturbines.com\/parts\/steam-turbine\/guardian-packing\/","title":{"rendered":"Guardian<sup>\u00ae<\/sup> Packing"},"content":{"rendered":"<p>MD&amp;A Parts Division offers the patented advanced design\u00a0<strong>Guardian\u00ae packing<\/strong>\u00a0ring.\u00a0Guardian\u00ae packing<strong>\u00a0<\/strong><span style=\"line-height: 1.5em;\">rings can be installed in the HP, IP, LP turbine sections along with all gland seal areas in any steam turbine. Unlike some packing designs, Guardian\u00ae Packing rings maintain a positive radial seal during shutdown, turning gear, start-up, and unit operation. Positive radial sealing is a fundamental component to maintaining unit efficiency. \u00a0<\/span><\/p>\n<ul>\n<li>No stationary fit modifications are required. \u00a0Unlike most brush seals, the Guardian packing rings are not a shaft-riding seal.<\/li>\n<li>Rings Made From Stainless Steel Material.<\/li>\n<li>The Guardian posts are set with slightly less radial clearance than the conventional teeth, so if a rub condition should occur the Guardian post would contact the rotor first, thus preventing damage to the conventional teeth.<\/li>\n<li>Works During All Steam &amp; Pressure Conditions.<\/li>\n<li>Light coil springs are used to hold the rings in a positive seal position during shutdown, turning gear operation, start-up, and running conditions.<\/li>\n<li>Lighter coil springs lessen radial forces only during start-up. If a rub should occur during start-up this allows for freer movement of the seal, lessening the radial forces applied to it when compared to conventional springs (leaf or arch bound design). \u00a0When rubs do occur they do not grow in intensity as with conventional materials or brush seals.<\/li>\n<li>Guardian post material, with its low coefficient of friction, non-galling, and long-wearing characteristics, prevents damage to the rotor body even during extreme rub conditions. \u00a0This low coefficient of friction means it does not generate the heat associated with conventional materials in a rub condition, eliminating the heat-affected area associated with other seals.<\/li>\n<li>The Guardian seal cannot remain in a retracted position, eliminating the potential for major efficiency losses.<\/li>\n<li>The custom installation places the bore of the seal to the corrected radial position, compensating for potential out-of-roundness conditions or offsets in the stationary fit areas. The seals are adjusted round to the rotor using readings supplied by the alignment contractor.<\/li>\n<li>When combined as an integrated sealing system,\u00a0Guardian packing rings &amp; Vortex Shedder tip seals\u00a0are proven to increase overall turbine efficiency above design by 1.5% &#8211; 4.5%.<\/li>\n<li>Increased unit efficiency translates to lower EPA emissions per megawatt\/hr, as well as, lower operating costs.<\/li>\n<\/ul>\n<p><b>Benefits:<\/b><\/p>\n<ul>\n<li>Minimizes Damage To Seal Teeth During Any Transient Event<\/li>\n<li>Extends Life of Seal<\/li>\n<li>Maintains Clearances Longer<\/li>\n<li>Sustains Efficiency Between Overhauls<\/li>\n<li>Protects Rotor in Catastrophic Failure<\/li>\n<\/ul>\n<p>Learn more about the other\u00a0<a href=\"https:\/\/www.mdaturbines.com\/resources\/steam-turbine-parts-solutions\/\">Steam Turbine Parts<\/a>\u00a0that MD&amp;A offers.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MD&amp;A Parts Division offers the patented advanced design\u00a0Guardian\u00ae packing\u00a0ring.\u00a0Guardian\u00ae packing\u00a0rings can be installed in the HP, IP, LP turbine sections along with all gland seal&#8230;<\/p>\n","protected":false},"author":2,"featured_media":74542,"parent":284,"menu_order":8,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"class_list":["post-327","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Steam Turbine Guardian Packing Rings | MD&amp;A Turbines<\/title>\n<meta name=\"description\" content=\"Maintain your steam turbine&#039;s efficiency with Guarding Packing\u00ae. Guardian packing rings maintain a positive radial seal during shutdown &amp; unit operation. Explore our turbine hardware now.\" \/>\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.mdaturbines.com\/parts\/steam-turbine\/guardian-packing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Steam Turbine Guardian Packing Rings | MD&amp;A Turbines\" \/>\n<meta property=\"og:description\" content=\"Maintain your steam turbine&#039;s efficiency with Guarding Packing\u00ae. Guardian packing rings maintain a positive radial seal during shutdown &amp; unit operation. 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