Description
DURAN® Spherical Joint Ball, unground (polished) version S 41/25, is a borosilicate glass 3.3 component designed for grease-free flexible laboratory connections. Unlike ground spherical joints, this schlifflos variant seals exclusively via an additional sealing ring. Two ring options are available: FEP-coated silicone rings or VITON sealing rings. The nominal size reflects the nominal diameter of the spherical joint and, where relevant, the clear tube diameter. Flexible connections in the 10–15° angular range are achievable, with reduced tightness expected beyond approximately 5°. This non-self-supporting glass article from manufacturer Duran/DWK Life Sciences is intended for further processing and assembly into glass apparatus. Grease-free operation is possible, and orientation in 360° is supported when used with the appropriate sealing ring. Ideal for constructing flexible, clean joints in laboratory glassware systems. Supplied as one piece with a net weight of 0,08 kg for integration into custom glass devices requiring adjustable, low-contamination connections.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Product type: Spherical joint ball, unground/polished S 41/25
- Material: Borosilicate glass 3.3
- Sealing: Via FEP-coated silicone or VITON ring
- EAN: 4032051051843
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Category
Distillation & extraction glassware
Sub-category
Ground-joint glassware (other)
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Questions about DURAN® Spherical Joint, ball polished
What is this article?
DURAN® Spherical Joint, ball polished is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Ground-joint glassware (other), inside Distillation & extraction glassware, in Labware.
This is ground-joint glassware that is not a head, a condenser or a Soxhlet: receivers, blank joints, odd adapters. A ground joint is named by the wide end and the length, such as 29/32. Mismatched joints do not seal, even with grease.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Ground-joint glassware (other). The catalogue is Labware.
Shelves beside this one are Distillation heads, adapters & columns, Condensers and Soxhlet & extraction apparatus.
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.