Erlenmeyer flask rubber stopper

Erlenmeyer flask rubber stopper

Erlenmeyer flask rubber stoppers are used to seal the Erlenmeyer flasks. These flasks are flat-bottomed and pretty much like beakers. Their facets, however, taper in as they move up and shape into a narrow vertical neck. The rubber stoppers used here are designed to accommodate the particular size necessities of the Erlenmeyer flasks. These flasks are classified primarily based on their volume. They vary from 50ml to 4000ml. This mandates the need for stoppers with inner diameter ranging from 4.1cm to more than 20.6cm. You must make sure that stoppers of the right length are chosen to avoid them popping out of the flask when a high-pressure gas build-up occurs in the container.
Also, these flasks are typically used while chemicals need more controlled heat. Their tapered sides help in preserving heat that could, in any other case, be carried away through evaporating contents. The Erlenmeyer flask rubber stopper material used must be pretty proof against heat and to changes in temperature. Commonly, silicone rubber is used as it can withstand very excessive temperatures.
The Erlenmeyer flask rubber stoppers are tapered in shape. They have got a wider outer facet and an inner facet with a smaller diameter. That is to make certain that a tight seal is in place whilst the stopper is pushed in. The purpose of the stopper is to make sure that the sample in the flask doesn’t spill out or escape the container. Plus, it keeps the sample safe from external environments by warding off dirt or other contaminants.

All dimensions are in mm​

Stopper & Plug Size Catalog

Compare four stopper profiles and check the selected part dimensions against your opening and available depth. Each profile has its own drawing and dimension meanings.

Custom colors are available to your Pantone color code. Include the code in your inquiry.

Blind-Hole · RSTTapered · RSAUndercut · RSBT-Shaped · RSD

RST T-Shaped Plugs

Match stem diameter A, flange diameter B, stem length C and flange thickness D. E refers to the underside recess; use the selected row and approved drawing to confirm the actual profile.

Dimension guide

Product appearance

PartNo.	A（mm）	B（mm）	C（mm）	D（mm）	E（mm）
RST2.5-5.5-5.3	2.5	5.5	5.3	2	0
RST2.7-5.5-5	2.7	5.5	5	2	0
RST3-4.3-4.5	3	4.3	4.5	0.8	0
RST3-7-7	3	7	7	2.2	0
RST3.3-6.5-6	3.3	6.5	6	1.5	0
RST3.5-6.5-6	3.5	6.5	6	2	0
RST3.8-7-10.5	3.8	7	10.5	1.5	0
RST3.8-7-7	3.8	7	7	1.5	0
RST3.8-7-6	3.8	7	6	1.5	0
RST4-7.5-6	4	7.5	6	2	0
RST4-9.5-7	4	9.5	7	2.5	0
RST4.3-8-6	4.3	8	6	1.5	0
RST4.5-7.5-6	4.5	7.5	6	2	0
RST4.8-6.8-3.6	4.8	6.8	3.6	0.9	0
RST4.8-9-7	4.8	9	7	1.5	0

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