Description
BOLA replacement inner parts for GL 25 fittings are intended for tubing with an outer diameter of 3,0 mm and restore reliable sealing in laboratory screw connections. Each set consists of a clamping ring in ETFE together with a sealing wedge and sealing plate made of PTFE; an additional FKM O-ring is provided for screw fittings on hose outer diameters smaller than 3 mm and remains without contact to the flow medium. Very good chemical resistance is obtained because the medium contacts only PTFE. These spare components from manufacturer Bohlender support maintenance of BOLA tubing connectors used in chemical handling and analytical laboratory workflows. The GL 25 thread matches common laboratory connector geometry, while the 3,0 mm outer-diameter specification suits narrow flexible tubing for reagent transfer and sampling lines. Supplied as 1 pc with a net weight of 0,01 kg, the parts replace worn or contaminated inner elements without exchanging the full fitting body. PTFE wetted surfaces help preserve connection integrity when aggressive solvents or process fluids are handled, keeping existing GL 25 BOLA assemblies in service through straightforward inner-part renewal.
This article is part of Hose connectors, adapters & fittings, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Hose outer diameter: 3,0 mm
- Thread: GL 25
- Material: Polytetrafluoroethylene (PTFE)
- Clamping ring: ETFE
- Sealing elements: PTFE wedge and plate
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Questions about BOLA Replacement Inner Parts, GL 25 aØ 3 mm PTFE, PVDF
What is this article?
BOLA Replacement Inner Parts, GL 25 aØ 3 mm PTFE, PVDF is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Hose connectors, adapters & fittings, inside Tubing, hoses & fittings, in Labware.
A hose connector or adapter joins two lines, or steps one bore down to another. The barb diameter has to match the tube, and the thread has to match the stopcock or the bottle. Most leaks are a mismatch here, not a hole in the tube.
Tubing is how a liquid or a gas moves between two vessels without being poured. Silicone stays flexible and survives repeated autoclaving. PTFE resists almost every solvent and is stiff. PVC is the ordinary flexible line for water and for mild aqueous work. The fitting, not the tube, is what usually leaks: the barb, the thread and the stopcock have to match the tube bore. Glass and plastic apparatus around these lines is indexed under ISO laboratory ware.
Which category should I open next?
The category is Tubing, hoses & fittings. The sub-category is Hose connectors, adapters & fittings. The catalogue is Labware.
Shelves beside this one are PVC, PTFE & other tubing, Stopcocks & valves, Silicone tubing and Tubing 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. 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.

