Description
BOLA replacement washers for stopcock plugs are red polypropylene underlay washers made for BOLA-Eco stopcock plugs used in laboratory glassware. They fit ground joint sizes NS 12,5, NS 14,5 and 13,5, covering cone ratios 1:10, 1:10 and 1:5 respectively, with an M 8 thread. The PP construction gives a lightweight, chemically suitable seating layer for Eco-type Hahnküken assemblies where colour-coded red washers are specified. Offered in a pack of 50 pieces and a net weight of 0,001 kg in the product data, these spare washers support maintenance and reassembly of multi-size stopcock systems. They are produced by manufacturer Bohlender for BOLA-Eco plugs that require matching PP underlay discs. Laboratories working with mixed NS 12,5 / NS 14,5 / 13,5 glass joints can keep a single pack for routine replacement when original washers are worn or lost. The washers restore proper seating geometry without changing the plug or joint design, helping keep stopcock operation consistent in everyday lab practice.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 50 pc(s)
- Brand: BOLA
- Material: Polypropylene (PP), red
- Ground joint sizes: NS 12,5 / NS 14,5 / 13,5
- Cone ratios: 1:10 / 1:10 / 1:5
- Thread: M 8
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Questions about BOLA Spare-washer for stopcocks, NS 12,5 NS 14,5 13,5 M 8 made of PP, red
What is this article?
BOLA Spare-washer for stopcocks, NS 12,5 NS 14,5 13,5 M 8 made of PP, red is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
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 Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, 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. 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.