{"product_id":"1pc-for-liquid-nitrogen-tank-polyurethane-lid-35mm-125mm-foam-stopper","title":"1PC for Liquid Nitrogen Tank Polyurethane Lid 35mm-125mm Foam Stopper","description":"\u003ch1 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:28px; line-height:36px; margin:0 0 8px 0;\"\u003e\n  Polyurethane Foam Stopper \/ Lid for Cryogenic Liquid Nitrogen Storage Tanks (35 mm – 125 mm Neck)\n\u003c\/h1\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#0056B3; font-size:14px; line-height:22px; letter-spacing:1px; text-transform:uppercase; margin:0 0 24px 0;\"\u003e\n  Cryogenic lab consumable · LN2 tank spare · Polyurethane foam lid\n\u003c\/p\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:16px; line-height:26px; margin:0 0 16px 0;\"\u003e\n  A direct replacement lid \/ stopper for laboratory and industrial cryogenic storage vessels holding\n  \u003cstrong\u003eliquid nitrogen (LN2)\u003c\/strong\u003e. The closed-cell polyurethane foam body provides a low thermal-conductivity\n  barrier that limits boil-off when the neck is sealed between sample retrievals, while the ribbed\n  outer profile and tapered plug geometry press-fit into neck openings from\n  \u003cstrong\u003e35 mm to 125 mm\u003c\/strong\u003e. Suitable for IVF \/ stem-cell \/ biobank storage, semen banks,\n  pharmaceutical cold-chain sampling, university life-science labs, and on-site process-cooling reservoirs\n  tied to a \u003ca href=\"\/ar\/collections\/factory-automation\" style=\"color:#0056B3; text-decoration:underline;\"\u003efactory automation\u003c\/a\u003e\n  temperature monitoring loop.\n\u003c\/p\u003e\n\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Key Specifications\n\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #eeeeee; font-family:Arial, Helvetica, sans-serif; font-size:14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003ePart Type\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003ePolyurethane foam lid \/ neck stopper for cryogenic storage tanks\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eCompatible Neck Diameter\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e35 mm to 125 mm (single plug, press-fit range)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eMaterial\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eClosed-cell rigid polyurethane foam (PU \/ PUR)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eOperating Temperature\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e−196 °C to +80 °C (LN2 service rated)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eThermal Conductivity\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e~0.022 W\/(m·K) — reduces LN2 boil-off vs. open neck\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eGeometry\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eTapered plug with stepped ribs, top pull-handle tab\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eQuantity\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e1 piece per package\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eStock Status\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eIn stock — quote within 24 hours at \u003ca href=\"mailto:Moritta@KOEED.COM\" style=\"color:#16c8c8; text-decoration:underline; font-weight:bold;\"\u003eMoritta@KOEED.COM\u003c\/a\u003e\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Datasheet Highlights\n\u003c\/h2\u003e\n\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003eClosed-cell PU foam resists moisture ingress, vapour diffusion, and microbial growth during routine use\u003c\/li\u003e\n  \u003cli\u003eTapered plug \u0026amp; stepped-rib profile self-centres inside the neck and stays seated when the dewar is moved\u003c\/li\u003e\n  \u003cli\u003eOperates continuously at −196 °C without cracking or hardening — verified by thermal-cycle soak testing\u003c\/li\u003e\n  \u003cli\u003eReplaces worn or lost original OEM stoppers on common 3 L \/ 6 L \/ 10 L \/ 25 L \/ 35 L \/ 50 L lab dewars\u003c\/li\u003e\n  \u003cli\u003eSingle-piece moulding — no separate gaskets, O-rings, or fasteners required\u003c\/li\u003e\n  \u003cli\u003eNon-marking top handle tab allows tool-free removal with cryo gloves\u003c\/li\u003e\n  \u003cli\u003eHydrophobic foam matrix sheds surface condensation, reducing frost-ice build-up on the neck rim\u003c\/li\u003e\n  \u003cli\u003eCompatible with routine dewar cleaning protocols using isopropyl alcohol or mild laboratory disinfectant wipes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Typical Applications\n\u003c\/h2\u003e\n\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003eIVF clinics, reproductive-medicine labs, andrology \/ andrology cryo banks\u003c\/li\u003e\n  \u003cli\u003eStem-cell, cord-blood, and biobank storage (GMP \/ ISO 20387 facilities)\u003c\/li\u003e\n  \u003cli\u003ePharmaceutical cold-chain sampling, vaccine \/ biologic retention samples\u003c\/li\u003e\n  \u003cli\u003eUniversity life-science and biochemistry research labs\u003c\/li\u003e\n  \u003cli\u003eVeterinary AI (artificial-insemination) semen storage\u003c\/li\u003e\n  \u003cli\u003eIndustrial cryo-process reservoirs (cold-trap, vacuum-pump LN2 feed, sample freeze-quench stations)\u003c\/li\u003e\n  \u003cli\u003eProcess-cooling LN2 buffer tanks tied to factory-automation temperature monitoring loops\u003c\/li\u003e\n  \u003cli\u003eReplacement lid for worn or lost original stoppers on MVE \/ Chart \/ Taylor-Wharton \/ CBS \/ Worthington Industries style lab dewars\u003c\/li\u003e\n  \u003cli\u003eField-service kit for cryo-vacuum pump inlet traps on semiconductor inspection or analytical instrument bays\u003c\/li\u003e\n  \u003cli\u003eCryo-grinding and freeze-fracture sample preparation in materials-testing labs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:16px 0 0 0;\"\u003e\n  A single damaged or missing stopper will accelerate LN2 boil-off and shorten the interval between\n  refills, which in a 24\/7 IVF workflow or continuous cryo-cooling loop translates directly into\n  unscheduled downtime. KOEED carries this replacement as a stocking consumable so that maintenance\n  teams and lab facilities do not have to order an entire new dewar to recover a working neck seal.\n  When the existing stopper has cracked, absorbed LN2 and become brittle, or fallen behind a freezer\n  cabinet and been lost, this part returns the dewar to its as-shipped thermal performance.\n\u003c\/p\u003e\n\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Related Modules \u0026amp; Cross-Reference\n\u003c\/h2\u003e\n\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #eeeeee; font-family:Arial, Helvetica, sans-serif; font-size:14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eSame consumable family\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        LN2 transfer hoses · cryo handling tongs · dewar roller bases · cryo PPE (gloves \/ face shield)\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eTemperature monitoring (RTD \/ TC)\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        \u003ca href=\"\/ar\/products\/1756-IF8H\" style=\"color:#0056B3; text-decoration:underline;\"\u003eAllen-Bradley 1756-IF8H\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/6es7-331-7kf02-0ab0\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSiemens 6ES7 331-7KF02\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/q68adi\" style=\"color:#0056B3; text-decoration:underline;\"\u003eMitsubishi Q68ADI\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/cp1w-ad041\" style=\"color:#0056B3; text-decoration:underline;\"\u003eOmron CP1W-AD041\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/sgdm-04ada\" style=\"color:#0056B3; text-decoration:underline;\"\u003eYaskawa SGDM-04ADA\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eProcess PLC controllers\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        \u003ca href=\"\/ar\/products\/1756-l73\" style=\"color:#0056B3; text-decoration:underline;\"\u003eAllen-Bradley 1756-L73\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/6es7-315-2eh14\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSiemens 6ES7 315-2EH14\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/q02hcpu\" style=\"color:#0056B3; text-decoration:underline;\"\u003eMitsubishi Q02HCPU\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/cp1h-x40dr-a\" style=\"color:#0056B3; text-decoration:underline;\"\u003eOmron CP1H-X40DR-A\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/products\/bmxp342020\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSchneider BMXP342020\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003e9-brand sourcing portfolio\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        \u003ca href=\"\/ar\/collections\/allen-bradley\" style=\"color:#0056B3; text-decoration:underline;\"\u003eAllen-Bradley\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/siemens\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSiemens\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/mitsubishi\" style=\"color:#0056B3; text-decoration:underline;\"\u003eMitsubishi\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/omron\" style=\"color:#0056B3; text-decoration:underline;\"\u003eOmron\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/fanuc\" style=\"color:#0056B3; text-decoration:underline;\"\u003eFanuc\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/schneider\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSchneider\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/yaskawa\" style=\"color:#0056B3; text-decoration:underline;\"\u003eYaskawa\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/panasonic\" style=\"color:#0056B3; text-decoration:underline;\"\u003ePanasonic\u003c\/a\u003e ·\n        \u003ca href=\"\/ar\/collections\/keyence\" style=\"color:#0056B3; text-decoration:underline;\"\u003eKEYENCE\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Warranty \u0026amp; Authenticity\n\u003c\/h2\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  Each stopper is inspected for dimensional conformity (35–125 mm neck range), surface finish, and\n  thermal-cycle integrity before shipment. KOEED ships worldwide via DHL \/ FedEx with a 90-day\n  limited warranty against manufacturing defects. For multi-unit or facility-level stocking, send a\n  count by neck diameter to\n  \u003ca href=\"mailto:Moritta@KOEED.COM\" style=\"color:#16c8c8; text-decoration:underline; font-weight:bold;\"\u003eMoritta@KOEED.COM\u003c\/a\u003e\n  and we will return a quotation within 24 hours on business days. Cryo-handling best practice\n  recommends keeping at least one spare stopper per dewar size in inventory so a damaged or lost\n  lid does not interrupt sample storage or process cooling. For large or multi-site cryo facilities\n  we can also prepare a master pack covering the most common 35, 50, 80, 100, and 125 mm neck sizes\n  to standardise spares handling across the lab.\n\u003c\/p\u003e\n\n\u003cdiv style=\"background-color:#16c8c8; padding:24px 32px; margin:32px 0; text-align:center; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003ch3 style=\"margin:0 0 12px 0; color:#ffffff; font-size:20px; line-height:28px;\"\u003e\n    Need this stopper or a full cryo-lab consumable list?\n  \u003c\/h3\u003e\n  \u003cp style=\"margin:0 0 16px 0; color:#ffffff; font-size:15px; line-height:22px;\"\u003e\n    Send your neck-diameter count and tank model to \u003cstrong\u003eMoritta@KOEED.COM\u003c\/strong\u003e and get availability + price within 24 hours.\n  \u003c\/p\u003e\n  \u003ca href=\"mailto:Moritta@KOEED.COM?subject=RFQ%20%E2%80%94%20PU%20Foam%20Stopper%2035-125mm\" style=\"display:inline-block; background-color:#ffffff; color:#0056B3; padding:12px 24px; text-decoration:none; font-weight:bold; border-radius:4px; font-size:15px;\"\u003e\n    Request a Quote →\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"border:1px solid #0056B3; padding:16px 24px; margin:16px 0; text-align:left; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 8px 0; color:#111111; font-size:15px; line-height:22px;\"\u003e\n    Looking for cryo-loop temperature monitoring modules to pair with the dewar?\n  \u003c\/p\u003e\n  \u003ca href=\"\/ar\/collections\/allen-bradley\" style=\"display:inline-block; color:#0056B3; padding:6px 18px; text-decoration:none; font-weight:bold; border:1px solid #0056B3; border-radius:4px; font-size:14px;\"\u003e\n    Browse Allen-Bradley →\n  \u003c\/a\u003e\n   \n  \u003ca href=\"\/ar\/collections\/siemens\" style=\"display:inline-block; color:#0056B3; padding:6px 18px; text-decoration:none; font-weight:bold; border:1px solid #0056B3; border-radius:4px; font-size:14px;\"\u003e\n    Browse Siemens →\n  \u003c\/a\u003e\n\u003c\/div\u003e\n","brand":"KOEED","offers":[{"title":"50mm round plug","offer_id":45608769487033,"sku":null,"price":22.42,"currency_code":"USD","in_stock":true},{"title":"50mm slot plug","offer_id":45608769519801,"sku":null,"price":22.42,"currency_code":"USD","in_stock":true},{"title":"60mm round plug","offer_id":45608769552569,"sku":null,"price":37.35,"currency_code":"USD","in_stock":true},{"title":"60mm slot plug","offer_id":45608769585337,"sku":null,"price":37.35,"currency_code":"USD","in_stock":true},{"title":"80mm","offer_id":45608769618105,"sku":null,"price":48.57,"currency_code":"USD","in_stock":true},{"title":"125mm","offer_id":45608769650873,"sku":null,"price":64.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/s-l1600_94d5efac-c61b-41d5-b543-bb948d04e2b6.png?v=1764381685","url":"https:\/\/koeed.com\/ar\/products\/1pc-for-liquid-nitrogen-tank-polyurethane-lid-35mm-125mm-foam-stopper","provider":"KOEED","version":"1.0","type":"link"}