Description
BOLA laboratory screw joints GL 18 for 4,0 mm hose outer diameter are compact fittings for secure tubing connections in laboratory fluid handling. Each unit combines a red screw cap made from glass-fibre-reinforced ETFE with inner parts comprising an ETFE clamping ring plus a sealing wedge and sealing plate in PTFE. Very good chemical resistance is obtained because the process medium contacts only PTFE along the flow path. Thread size is GL 18 and the connection is dimensioned for hose outer diameter 4,0 mm. These components from manufacturer Bohlender support analytical and preparative setups that require inert wetted surfaces and reliable mechanical sealing at GL ports. Supplied as a single piece with a net weight of 0,02 kg, the design balances chemical durability at the media interface with a reinforced cap for repeated assembly. Suitable for routing tubing in laboratory systems where PTFE contact surfaces help protect sample or reagent integrity during transfer and connection work.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Thread: GL 18
- Hose outer diameter: 4,0 mm
- Cap material: Red ETFE, glass-fibre reinforced
- Inner parts: Clamping ring (ETFE), sealing wedge and sealing plate (PTFE)
- Wetted material: PTFE only
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about BOLA Laboratory Screw Joints, GL 18 Ø 4 mm PTFE inner parts, ETFE cap
What is this article?
BOLA Laboratory Screw Joints, GL 18 Ø 4 mm PTFE inner parts, ETFE cap is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, Ground-joint glass stoppers, Lids & seals and Closures (other).
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. Articles in stock ship within 2–5 business days. 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.