Description
Rubber sleeve Ø 33 mm is a laboratory sealing gasket intended to form a tight seal between 15 ml filter crucibles and 34 mm filter adapters. This rubber sleeve from manufacturer ROBU - Stereon provides dependable vacuum integrity for filtration of moderate sample volumes. Delivered in packs of 5 pieces, it functions as a Nutschen seal for gravimetric determinations and solid-liquid separations. The 33 mm diameter corresponds to standard 15 ml filter crucibles, while the adapter interface matches 34 mm filtration stems. Flexible rubber material permits straightforward installation and removal while preserving seal performance under typical laboratory vacuum conditions. Analytical and research laboratories using 15 ml filter crucibles rely on this dimensionally matched accessory to avoid air leaks between crucible and adapter. The sleeve integrates directly into conventional filtration assemblies without requiring special tools or modifications. It supports efficient quantitative filtration workflows in chemical, environmental and materials testing environments where consistent sealing of 15 ml crucibles is essential. The five-piece pack offers convenient replacement stock for routine laboratory use.
This article is part of Crucibles, in Dishes, crucibles & porcelain.
Key features
- Pack size: 5 pc(s)
- Product type: Rubber sleeve
- Diameter: 33 mm
- For filter crucible: 15 ml
- Adapter diameter: 34 mm
- Function: Sealing gasket
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Questions about Rubber sleeve, Ø 33 mm, for Crucible 15 ml
What is this article?
Rubber sleeve, Ø 33 mm, for Crucible 15 ml is the article on this page. Luminix Health distributes ROBU - Stereon for laboratory use. It sits in Crucibles, inside Dishes, crucibles & porcelain, in Labware.
A crucible holds a sample in a furnace or over a flame, at temperatures that would soften a borosilicate beaker. Porcelain, platinum and glazed ceramic are different articles. The form, tall or wide, decides how fast a sample dries or ashes.
A dish is an open vessel for drying, evaporating or holding a solid. Porcelain and glazed ceramic take a higher temperature than borosilicate glass, which is why a crucible, not a beaker, goes into a furnace. A watch glass covers, or holds a small amount for drying. A mortar is for grinding. The temperature and the chemical, not the shape alone, choose the material. Laboratory ware of this family is listed under ISO laboratory ware.
Which category should I open next?
The category is Dishes, crucibles & porcelain. The sub-category is Crucibles. The catalogue is Labware.
Shelves beside this one are Trays, bowls & tubs, Mortars & pestles, Watch glasses & crystallising dishes, Evaporating dishes and Dishes (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.