{"product_id":"globe-cap-116152k","title":"Flange Plug Caps, Black PE — 12, 13 \u0026 16 mm Test Tube Closures, 1000\/Case | Globe Scientific","description":"\u003ch2\u003eFlange Plug Caps, Black Polyethylene — 12, 13 \u0026amp; 16 mm, 1000 per Case\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGlobe Scientific Flange Plug Caps\u003c\/strong\u003e deliver a reliable push-fit seal for round-bottom and flat-bottom test tubes across three common rim diameters. Engineered for routine sample storage, specimen handling, and culture tube closure, these black polyethylene plugs insert quickly and resist accidental pop-off during transport and benchtop work.\u003c\/p\u003e\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 (push-in closure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\/Size\u003c\/td\u003e\n\u003ctd\u003e12 mm, 13 mm, 16 mm tube diameters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePolyethylene (PE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClosure\/Cap\u003c\/td\u003e\n\u003ctd\u003eFlange plug, friction-fit, black\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\u003ch2\u003eAvailable Sizes\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003ctd\u003e118127K\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\u003e118240K\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\u003e116152K\u003c\/td\u003e\n\u003ctd\u003e$51.20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSealing specimen and sample test tubes for short-term storage\u003c\/li\u003e\n\u003cli\u003eClosing culture tubes after inoculation or media dispensing\u003c\/li\u003e\n\u003cli\u003eCapping blood and serum collection tubes for transport\u003c\/li\u003e\n\u003cli\u003eSecuring reagent and standard aliquots on the bench\u003c\/li\u003e\n\u003cli\u003eReducing evaporation in incubation and refrigerated holding\u003c\/li\u003e\n\u003cli\u003eColor-coded sample identification using black plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality \u0026amp; Procurement\u003c\/h2\u003e\n\u003cp\u003elabsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Each case carries lot numbers that 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 orders.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhich tube diameter should I order?\u003c\/h3\u003e\n\u003cp\u003eMatch the cap to the outer rim diameter of your tube: 12 mm, 13 mm, or 16 mm. The flange seats against the rim while the plug body grips the inner wall, so accurate sizing ensures a secure fit.\u003c\/p\u003e\n\u003ch3\u003eAre these flange plug caps sterile?\u003c\/h3\u003e\n\u003cp\u003eNo. These caps ship non-sterile. For sterile workflows, autoclave compatibility depends on your protocol; polyethylene has a limited heat tolerance, so verify before sterilizing.\u003c\/p\u003e\n\u003ch3\u003eHow many caps come in each pack?\u003c\/h3\u003e\n\u003cp\u003eEach item is sold per case of 1000 caps. Pricing shown is per pack, and tiered pricing applies to multi-case institutional orders.\u003c\/p\u003e\n\u003ch3\u003eWill these caps reseal after removal?\u003c\/h3\u003e\n\u003cp\u003eYes. The friction-fit flange plug design allows repeated insertion and removal for routine bench access, though seal integrity is best on undamaged plugs.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Globe Scientific Flange Plug Caps, Black, 12\/13\/16 mm\",\n  \"brand\": {\"@type\": \"Brand\", \"name\": \"Globe Scientific\"},\n  \"description\": \"Black polyethylene flange plug caps for 12, 13 and 16 mm test tubes. 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