Description
BOLA grip collar sleeves, NS 12/21 PTFE, reusable are laboratory ground-joint sleeves made from polytetrafluoroethylene (PTFE), featuring a protruding grip collar and sealing rings on the outer surface. They deliver high-vacuum-tight sealing with a low leak rate below 0,0001 mbar × l/s for dependable taper-joint connections. A robust construction supports continuous laboratory duty, and the external sealing rings are easy to clean because they remain readily accessible. Dimensions follow European standard size NS 12/21. Each unit is supplied as 1 pc with a net weight of 0,0012 kg, suited to individual joint assembly or replacement on glassware. These reusable sleeves from manufacturer Bohlender combine convenient collar handling with reliable outer-ring contact for vacuum and general laboratory use. The PTFE body provides the chemical inertness expected of fluoropolymer joint accessories, while the grip-collar format aids placement and removal without sacrificing the low-leak sealing performance required at NS 12/21 interfaces in research and routine setups.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Material: Polytetrafluoroethylene (PTFE)
- Joint size: NS 12/21
- Design: Protruding grip collar with external sealing rings
- Leak rate: < 0,0001 mbar × l/s
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Questions about BOLA Sleeves with Gripping Ring, NS 12/21 PTFE, reusable
What is this article?
BOLA Sleeves with Gripping Ring, NS 12/21 PTFE, reusable is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Grease, boiling stones & sealants, inside Tools & accessories, in Labware.
Grease seals a ground joint. Boiling stones give a liquid a place to start boiling so it does not bump. A sealant does the same job as grease when grease would contaminate the product. They are small, and they decide whether a joint weeps.
The small tools of the bench are what the hand actually holds: a spatula for a powder, forceps for an object that must stay clean, a brush for a narrow neck, a desiccator when a dried sample must not take up water again. None of these reads a measurement. They keep the measurement possible. The apparatus around them is listed under ISO laboratory apparatus.
Which category should I open next?
The category is Tools & accessories. The sub-category is Grease, boiling stones & sealants. The catalogue is Labware.
Shelves beside this one are Spatulas & spoons, Other lab tools & accessories, Lab furniture, trolleys & storage, Tweezers & forceps, Scissors, scalpels & dissecting instruments, Weighing boats, dishes & paper, Desiccators & desiccant, Timers, stopwatches & calculators, Stationery, books & lab notebooks, Brushes & cleaning tools, Stirring rods, spreaders & glass tools, Cutting & sealing tools and Gas handling & burners accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
