{"id":3784,"date":"2025-08-01T13:46:30","date_gmt":"2025-08-01T13:46:30","guid":{"rendered":"https:\/\/discover.restek.com\/uncategorized\/why-cant-i-get-my-press-tight-connector-to-seal\/"},"modified":"2025-12-09T01:30:07","modified_gmt":"2025-12-09T01:30:07","slug":"why-cant-i-get-my-press-tight-connector-to-seal","status":"publish","type":"post","link":"https:\/\/discover.restek.com\/fr\/faq\/gnot5032\/why-cant-i-get-my-press-tight-connector-to-seal","title":{"rendered":"Why can\u2019t I get my Press-Tight connector to seal?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNOT3393-03.jpg\" alt=\"Universal Press-Tight Connectors\" class=\"wp-image-21970\" title=\"-\" srcset=\"https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNOT3393-03.jpg 400w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNOT3393-03-300x300.jpg 300w, https:\/\/discover.restek.com\/wp-content\/uploads\/figure-article-GNOT3393-03-150x150.jpg 150w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/figure>\n\n\n\n<p>Defined PressFit connectors&nbsp;and&nbsp;Press-Tight connectors are easy to use, but if they are not properly sealed, they can loosen due to thermal expansion during temperature-programmed runs. The keys to successful sealing are (1) making a clean, square cut on the column, and (2) moistening the end of the column with methanol or acetonitrile before seating it into the connector. A small amount of polyimide resin also helps prevent the seal from separating during temperature cycling.<\/p>\n\n\n\n<p>For complete instructions on using the Press-Tight connector, consult the document included with the product or reference the Universal Fused Silica Press-Tight Connectors instruction sheet\u00a0here.<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/discover.restek.com\/wp-content\/uploads\/202-04-001.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of 202-04-001.\"><\/object><a id=\"wp-block-file--media-2cacda2c-3fd9-4067-b283-d36a94d43e91\" href=\"https:\/\/discover.restek.com\/wp-content\/uploads\/202-04-001.pdf\">202-04-001<\/a><a href=\"https:\/\/discover.restek.com\/wp-content\/uploads\/202-04-001.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-2cacda2c-3fd9-4067-b283-d36a94d43e91\">Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Defined PressFit connectors&nbsp;and&nbsp;Press-Tight connectors are easy to use, but if they are not properly sealed, they can loosen due to thermal expansion during temperature-programmed runs. The keys to successful sealing are (1) making a clean, square cut on the column, and (2) moistening the end of the column with methanol or acetonitrile before seating it&#8230;<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[23],"tags":[2681],"industries-application":[],"post-badge":[],"resource-type":[],"product-library":[],"resource-technique":[],"ppma_author":[414],"class_list":["post-3784","post","type-post","status-publish","format-standard","hentry","category-faq","tag-faq-gc-accessories"],"acf":[],"taxonomy_info":{"category":[{"value":23,"label":"FAQ"}],"post_tag":[{"value":2681,"label":"FAQ: GC Accessories"}]},"featured_image_src_large":false,"author_info":{"display_name":"Restek Corporation","author_link":"https:\/\/discover.restek.com\/fr\/author\/restek-corporation\/"},"comment_info":0,"category_info":[{"term_id":23,"name":"FAQ","slug":"faq","term_group":0,"term_taxonomy_id":23,"taxonomy":"category","description":"","parent":0,"count":271,"filter":"raw","cat_ID":23,"category_count":271,"category_description":"","cat_name":"FAQ","category_nicename":"faq","category_parent":0}],"tag_info":[{"term_id":2681,"name":"FAQ: GC Accessories","slug":"faq-gc-accessories","term_group":0,"term_taxonomy_id":2681,"taxonomy":"post_tag","description":"Browse frequently asked questions for GC accessories.","parent":0,"count":22,"filter":"raw"}],"authors":[{"term_id":414,"user_id":11,"is_guest":0,"slug":"restek-corporation","display_name":"Restek Corporation","avatar_url":{"url":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg","url2x":"https:\/\/discover.restek.com\/wp-content\/uploads\/Restek_Favicon_300x300.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/3784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/comments?post=3784"}],"version-history":[{"count":3,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/3784\/revisions"}],"predecessor-version":[{"id":71455,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/posts\/3784\/revisions\/71455"}],"wp:attachment":[{"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/media?parent=3784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/categories?post=3784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/tags?post=3784"},{"taxonomy":"industries-application","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/industries-application?post=3784"},{"taxonomy":"post-badge","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/post-badge?post=3784"},{"taxonomy":"resource-type","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-type?post=3784"},{"taxonomy":"product-library","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/product-library?post=3784"},{"taxonomy":"resource-technique","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/resource-technique?post=3784"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/discover.restek.com\/fr\/wp-json\/wp\/v2\/ppma_author?post=3784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}