{"id":8611,"date":"2026-01-29T17:05:43","date_gmt":"2026-01-29T09:05:43","guid":{"rendered":"https:\/\/www.sic-wafers.com\/?post_type=product&#038;p=8611"},"modified":"2026-01-29T17:07:23","modified_gmt":"2026-01-29T09:07:23","slug":"sapphire-thermocouple-tube-single-crystal-al%e2%82%82o%e2%82%83-protection-sheath-for-high-temperature-and-corrosive-environments","status":"publish","type":"product","link":"https:\/\/www.sic-wafers.com\/cs\/product\/sapphire-thermocouple-tube-single-crystal-al%e2%82%82o%e2%82%83-protection-sheath-for-high-temperature-and-corrosive-environments\/","title":{"rendered":"Saf\u00edrov\u00e1 termo\u010dl\u00e1nkov\u00e1 trubi\u010dka s monokrystalick\u00fdm Al\u2082O\u2083 ochrann\u00fdm pl\u00e1\u0161t\u011bm pro vysokoteplotn\u00ed a korozivn\u00ed prost\u0159ed\u00ed"},"content":{"rendered":"<h3 data-start=\"202\" data-end=\"222\">Product Overview<\/h3>\n<p data-start=\"223\" data-end=\"528\">The Sapphire Thermocouple Tube is a high-performance thermocouple protection sheath made from single crystal sapphire (Al\u2082O\u2083). Produced using advanced EFG\/KY growth methods, it is a one-piece, dense crystal tube designed to withstand extreme temperature, pressure, and chemical exposure.<\/p>\n<p data-start=\"530\" data-end=\"736\">It is an ideal replacement for traditional corundum or ceramic tubes, offering superior reliability, extended thermocouple lifespan, and stable performance in harsh industrial and laboratory conditions.<\/p>\n<h3 data-start=\"743\" data-end=\"759\">Kl\u00ed\u010dov\u00e9 vlastnosti<\/h3>\n<ul data-start=\"761\" data-end=\"1692\">\n<li data-start=\"761\" data-end=\"971\">\n<p data-start=\"763\" data-end=\"971\">Exceptional Thermal Resistance<img data-dominant-color=\"696b6d\" data-has-transparency=\"false\" style=\"--dominant-color: #696b6d;\" fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-8612 alignright not-transparent\" src=\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-300x300.webp\" alt=\"\" width=\"300\" height=\"300\" srcset=\"\" sizes=\"(max-width: 300px) 100vw, 300px\" data-srcset=\"\" \/><br data-start=\"797\" data-end=\"800\" \/>Can operate reliably up to 2000\u202f\u00b0C, with a melting point of 2030\u202f\u00b0C, maintaining shape and mechanical properties even in extreme high-temperature environments.<\/p>\n<\/li>\n<li data-start=\"973\" data-end=\"1130\">\n<p data-start=\"975\" data-end=\"1130\">Outstanding Chemical and Corrosion Resistance<br data-start=\"1024\" data-end=\"1027\" \/>Resistant to acids, alkalis, molten metals, and reactive gases, preventing damage to thermocouples.<\/p>\n<\/li>\n<li data-start=\"1132\" data-end=\"1292\">\n<p data-start=\"1134\" data-end=\"1292\">Vysok\u00e1 mechanick\u00e1 pevnost<br data-start=\"1162\" data-end=\"1165\" \/>Mohs hardness of 9, providing excellent wear resistance and protection against mechanical stress, pressure, and impact.<\/p>\n<\/li>\n<li data-start=\"1294\" data-end=\"1424\">\n<p data-start=\"1296\" data-end=\"1424\">100% Gas Tightness<br data-start=\"1318\" data-end=\"1321\" \/>Fully dense single crystal structure prevents gas infiltration and ensures environmental isolation.<\/p>\n<\/li>\n<li data-start=\"1426\" data-end=\"1570\">\n<p data-start=\"1428\" data-end=\"1570\">Superior Electrical Insulation<br data-start=\"1462\" data-end=\"1465\" \/>Maintains dielectric strength at high temperatures, suitable for electrically sensitive measurements.<\/p>\n<\/li>\n<li data-start=\"1572\" data-end=\"1692\">\n<p data-start=\"1574\" data-end=\"1692\">Ultra-High Purity<br data-start=\"1595\" data-end=\"1598\" \/>Purity up to 99.995, ensuring stable performance and minimal contamination risk.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1699\" data-end=\"1725\">Typical Specifications<\/h3>\n<div class=\"TyagGW_tableContainer\">\n<div class=\"group TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\">\n<table class=\"w-fit min-w-(--thread-content-width)\" data-start=\"1727\" data-end=\"2054\">\n<thead data-start=\"1727\" data-end=\"1756\">\n<tr data-start=\"1727\" data-end=\"1756\">\n<th data-start=\"1727\" data-end=\"1739\" data-col-size=\"sm\">Parametr<\/th>\n<th data-start=\"1739\" data-end=\"1756\" data-col-size=\"sm\">Specifikace<\/th>\n<\/tr>\n<\/thead>\n<tbody data-start=\"1767\" data-end=\"2054\">\n<tr data-start=\"1767\" data-end=\"1813\">\n<td data-start=\"1767\" data-end=\"1778\" data-col-size=\"sm\">Materi\u00e1l<\/td>\n<td data-col-size=\"sm\" data-start=\"1778\" data-end=\"1813\">Single Crystal Sapphire (Al\u2082O\u2083)<\/td>\n<\/tr>\n<tr data-start=\"1814\" data-end=\"1840\">\n<td data-start=\"1814\" data-end=\"1831\" data-col-size=\"sm\">Inner Diameter<\/td>\n<td data-col-size=\"sm\" data-start=\"1831\" data-end=\"1840\">15 mm<\/td>\n<\/tr>\n<tr data-start=\"1841\" data-end=\"1867\">\n<td data-start=\"1841\" data-end=\"1858\" data-col-size=\"sm\">Outer Diameter<\/td>\n<td data-col-size=\"sm\" data-start=\"1858\" data-end=\"1867\">18 mm<\/td>\n<\/tr>\n<tr data-start=\"1868\" data-end=\"1887\">\n<td data-start=\"1868\" data-end=\"1877\" data-col-size=\"sm\">Length<\/td>\n<td data-col-size=\"sm\" data-start=\"1877\" data-end=\"1887\">280 mm<\/td>\n<\/tr>\n<tr data-start=\"1888\" data-end=\"1924\">\n<td data-start=\"1888\" data-end=\"1912\" data-col-size=\"sm\">Dimensional Tolerance<\/td>\n<td data-col-size=\"sm\" data-start=\"1912\" data-end=\"1924\">\u00b10.05 mm<\/td>\n<\/tr>\n<tr data-start=\"1925\" data-end=\"1953\">\n<td data-start=\"1925\" data-end=\"1941\" data-col-size=\"sm\">Soust\u0159ed\u011bnost<\/td>\n<td data-col-size=\"sm\" data-start=\"1941\" data-end=\"1953\">\u00b10.05 mm<\/td>\n<\/tr>\n<tr data-start=\"1954\" data-end=\"1983\">\n<td data-start=\"1954\" data-end=\"1971\" data-col-size=\"sm\">Povrchov\u00e1 \u00faprava<\/td>\n<td data-col-size=\"sm\" data-start=\"1971\" data-end=\"1983\">As-grown<\/td>\n<\/tr>\n<tr data-start=\"1984\" data-end=\"2029\">\n<td data-start=\"1984\" data-end=\"2016\" data-col-size=\"sm\">Maxim\u00e1ln\u00ed provozn\u00ed teplota<\/td>\n<td data-col-size=\"sm\" data-start=\"2016\" data-end=\"2029\">\u2264 2000\u202f\u00b0C<\/td>\n<\/tr>\n<tr data-start=\"2030\" data-end=\"2054\">\n<td data-start=\"2030\" data-end=\"2046\" data-col-size=\"sm\">Gas Tightness<\/td>\n<td data-start=\"2046\" data-end=\"2054\" data-col-size=\"sm\">100%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<blockquote data-start=\"2056\" data-end=\"2203\">\n<p data-start=\"2058\" data-end=\"2203\">Customizable Options: Inner\/outer diameter, length, end shapes, and surface finish can be tailored to your specific application requirements.<\/p>\n<\/blockquote>\n<h3 data-start=\"2210\" data-end=\"2226\">Aplikace<\/h3>\n<ul data-start=\"2228\" data-end=\"2582\">\n<li data-start=\"2228\" data-end=\"2273\">\n<p data-start=\"2230\" data-end=\"2273\">High-temperature vacuum and tube furnaces<\/p>\n<\/li>\n<li data-start=\"2274\" data-end=\"2332\">\n<p data-start=\"2276\" data-end=\"2332\">Single crystal growth furnaces (sapphire, SiC, oxides)<\/p>\n<\/li>\n<li data-start=\"2333\" data-end=\"2386\">\n<p data-start=\"2335\" data-end=\"2386\">Semiconductor research and materials laboratories<\/p>\n<\/li>\n<li data-start=\"2387\" data-end=\"2443\">\n<p data-start=\"2389\" data-end=\"2443\">Chemical reactors and corrosive process environments<\/p>\n<\/li>\n<li data-start=\"2444\" data-end=\"2480\">\n<p data-start=\"2446\" data-end=\"2480\">Glass melting and blast furnaces<\/p>\n<\/li>\n<li data-start=\"2481\" data-end=\"2521\">\n<p data-start=\"2483\" data-end=\"2521\">Metallurgical temperature monitoring<\/p>\n<\/li>\n<li data-start=\"2522\" data-end=\"2582\">\n<p data-start=\"2524\" data-end=\"2582\">Hydrogen production and high-pressure measurement setups<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2584\" data-end=\"2765\">Sapphire thermocouple tubes are particularly suitable for environments where ceramic or corundum tubes fail due to chemical reactions, porosity, or high-temperature deformation.<\/p>\n<h3 data-start=\"2772\" data-end=\"2809\"><img data-dominant-color=\"58564b\" data-has-transparency=\"false\" style=\"--dominant-color: #58564b;\" decoding=\"async\" class=\"size-medium wp-image-8613 alignleft not-transparent\" src=\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-300x300.webp\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-300x300.webp 300w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-150x150.webp 150w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-768x768.webp 768w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-600x600.webp 600w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1-100x100.webp 100w, https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-1.webp 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Frequently Asked Questions (FAQs)<\/h3>\n<p data-start=\"2811\" data-end=\"3093\">Q1: What makes sapphire thermocouple tubes better than ceramic tubes?<br data-start=\"2884\" data-end=\"2887\" \/>Sapphire tubes provide higher temperature tolerance, chemical inertness, full gas tightness, and mechanical durability, outperforming standard ceramic or corundum protection tubes in extreme conditions.<\/p>\n<p data-start=\"3095\" data-end=\"3327\">Q2: Can the sapphire thermocouple tube be used in corrosive chemical processes?<br data-start=\"3178\" data-end=\"3181\" \/>Yes. Its exceptional chemical stability allows use in acids, alkalis, molten metals, and reactive gases without compromising the thermocouple.<\/p>\n<p data-start=\"3329\" data-end=\"3549\">Q3: Is customization available for sapphire thermocouple tubes?<br data-start=\"3396\" data-end=\"3399\" \/>Absolutely. Tubes can be customized for length, inner\/outer diameter, end geometry, and surface finish to match your furnace or measurement setup.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Sapphire Thermocouple Tube is a high-performance thermocouple protection sheath made from single crystal sapphire (Al\u2082O\u2083). Produced using advanced EFG\/KY growth methods<\/p>","protected":false},"featured_media":8612,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_uag_custom_page_level_css":""},"product_brand":[],"product_cat":[1096],"product_tag":[1768,1767,1766,1765,1455],"class_list":{"0":"post-8611","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sapphire-tube","7":"product_tag-corrosion-resistant-thermocouple-tube","8":"product_tag-high-temperature-thermocouple-tube","9":"product_tag-sapphire-protection-sheath","10":"product_tag-sapphire-thermocouple-tube","11":"product_tag-single-crystal-al2o3","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"acf":[],"uagb_featured_image_src":{"full":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2.webp",1000,1000,false],"thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-150x150.webp",150,150,true],"medium":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-300x300.webp",300,300,true],"medium_large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-768x768.webp",768,768,true],"large":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2.webp",800,800,false],"1536x1536":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2.webp",1000,1000,false],"2048x2048":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2.webp",1000,1000,false],"trp-custom-language-flag":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2.webp",12,12,false],"woocommerce_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-300x300.webp",300,300,true],"woocommerce_single":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-600x600.webp",600,600,true],"woocommerce_gallery_thumbnail":["https:\/\/www.sic-wafers.com\/wp-content\/uploads\/2026\/01\/\u672a\u547d\u540d\u7684\u8bbe\u8ba1-2-100x100.webp",100,100,true]},"uagb_author_info":{"display_name":"lydia","author_link":"https:\/\/www.sic-wafers.com\/cs\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"The Sapphire Thermocouple Tube is a high-performance thermocouple protection sheath made from single crystal sapphire (Al\u2082O\u2083). Produced using advanced EFG\/KY growth methods","_links":{"self":[{"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product\/8611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/comments?post=8611"}],"version-history":[{"count":2,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product\/8611\/revisions"}],"predecessor-version":[{"id":8616,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product\/8611\/revisions\/8616"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/media\/8612"}],"wp:attachment":[{"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/media?parent=8611"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product_brand?post=8611"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product_cat?post=8611"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.sic-wafers.com\/cs\/wp-json\/wp\/v2\/product_tag?post=8611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}