{"product_id":"globe-cap-116152r","title":"Flange Plug Caps, Red Polyethylene — 12, 13 \u0026 16 mm Test Tube Closures, 1000\/Case | Globe Scientific","description":"\u003ch2\u003eRed Flange Plug Caps for 12, 13 \u0026amp; 16 mm Test Tubes — 1000\/Case\u003c\/h2\u003e\n\u003cp\u003eThese \u003cstrong\u003eGlobe Scientific Flange Plug Caps\u003c\/strong\u003e deliver a secure, push-in seal for round-bottom and culture tubes across three common diameters. Molded in red polyethylene for fast visual identification, they suit sample storage, specimen transport, and routine clinical or research tube closure where reliable retention matters at the bench.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlange Plug Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize (range across variants)\u003c\/td\u003e\n\u003ctd\u003e12 mm, 13 mm, 16 mm tube ID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eFlange plug, push-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSterility\u003c\/td\u003e\n\u003ctd\u003eNon-sterile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Size\u003c\/td\u003e\n\u003ctd\u003e1000 caps per case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003ePrice (per case of 1000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003ctd\u003e118127R\u003c\/td\u003e\n\u003ctd\u003e$36.70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e13 mm\u003c\/td\u003e\n\u003ctd\u003e118240R\u003c\/td\u003e\n\u003ctd\u003e$37.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16 mm\u003c\/td\u003e\n\u003ctd\u003e116152R\u003c\/td\u003e\n\u003ctd\u003e$51.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSealing serum and specimen tubes during cold or ambient storage\u003c\/li\u003e\n\u003cli\u003eClosing culture tubes for microbiology and media work\u003c\/li\u003e\n\u003cli\u003eColor-coded tube identification within mixed sample racks\u003c\/li\u003e\n\u003cli\u003eCapping centrifuge and round-bottom tubes after aliquoting\u003c\/li\u003e\n\u003cli\u003eSecure transport of capped samples between labs or departments\u003c\/li\u003e\n\u003cli\u003eGeneral test tube closure for teaching and clinical bench protocols\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003eOrder from labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each case carries lot numbers to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact us for volume quotes on standing protocols.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhich tube diameter does each cap fit?\u003c\/h3\u003e\n\u003cp\u003eEach variant is sized to the tube inner diameter: 12 mm, 13 mm, or 16 mm. Match the cap size to your tube's bore for a snug flange plug seal; confirm tube ID against the manufacturer's spec before ordering.\u003c\/p\u003e\n\u003ch3\u003eAre these caps sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. The flange plug caps are supplied non-sterile. If your workflow requires sterility, validate an in-house autoclave or chemical sterilization step against polyethylene's temperature limits before use.\u003c\/p\u003e\n\u003ch3\u003eWhat material are the caps made from?\u003c\/h3\u003e\n\u003cp\u003eThey are molded from polyethylene, a flexible plastic that provides a friction-fit closure and tolerates standard refrigerated and ambient storage. Polyethylene is not recommended for autoclave cycles at elevated temperatures.\u003c\/p\u003e\n\u003ch3\u003eHow many caps come in a case?\u003c\/h3\u003e\n\u003cp\u003ePrices are per case of 1000 caps. The 12 mm case is $36.70, 13 mm is $37.00, and 16 mm is $51.20. Tiered pricing applies to larger institutional orders.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific Flange Plug Caps, Red Polyethylene, 12\/13\/16 mm\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"Red polyethylene flange plug caps for 12, 13, and 16 mm test tubes. Push-in closures sold 1000 per case.\",\n  \"material\": \"Polyethylene\",\n  \"color\": \"Red\",\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"36.70\",\n    \"highPrice\": \"51.20\",\n    \"offerCount\": \"3\",\n    \"offers\": [\n      {\"@type\": \"Offer\", \"sku\": \"118127R\", \"name\": \"Flange Plug Cap 12 mm Red\", \"price\": \"36.70\", \"priceCurrency\": \"USD\"},\n      {\"@type\": \"Offer\", \"sku\": \"118240R\", \"name\": \"Flange Plug Cap 13 mm Red\", \"price\": \"37.00\", \"priceCurrency\": \"USD\"},\n      {\"@type\": \"Offer\", \"sku\": \"116152R\", \"name\": \"Flange Plug Cap 16 mm Red\", \"price\": \"51.20\", \"priceCurrency\": \"USD\"}\n    ]\n  }\n}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\"@type\": \"Question\", \"name\": \"Which tube diameter does each cap fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each variant is sized to the tube inner diameter: 12 mm, 13 mm, or 16 mm. Match the cap size to your tube's bore for a snug flange plug seal; confirm tube ID against the manufacturer's spec before ordering.\"}},\n    {\"@type\": \"Question\", \"name\": \"Are these caps sterile?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The flange plug caps are supplied non-sterile. If your workflow requires sterility, validate an in-house autoclave or chemical sterilization step against polyethylene's temperature limits before use.\"}},\n    {\"@type\": \"Question\", \"name\": \"What material are the caps made from?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"They are molded from polyethylene, a flexible plastic that provides a friction-fit closure and tolerates standard refrigerated and ambient storage. Polyethylene is not recommended for autoclave cycles at elevated temperatures.\"}},\n    {\"@type\": \"Question\", \"name\": \"How many caps come in a case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Prices are per case of 1000 caps. The 12 mm case is $36.70, 13 mm is $37.00, and 16 mm is $51.20. Tiered pricing applies to larger institutional orders.\"}}\n  ]\n}\n\u003c\/script\u003e","brand":"Globe Scientific","offers":[{"title":"16 mm — Bag of 1000","offer_id":48612186652904,"sku":"116152R","price":51.2,"currency_code":"USD","in_stock":true},{"title":"12 mm — Bag of 1000","offer_id":48612186685672,"sku":"118127R","price":36.7,"currency_code":"USD","in_stock":true},{"title":"13 mm — Bag of 1000","offer_id":48612186718440,"sku":"118240R","price":37.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/116152r_1.jpg?v=1780438400","url":"https:\/\/labsupplies.com\/products\/globe-cap-116152r","provider":"LabSupplies.com","version":"1.0","type":"link"}