Rubber Stopper for Erlenmeyer Flask 1 Hole
Product Code : JL-LEP-10274
The Rubber Stopper for Erlenmeyer Flask 1 Hole from Jaincolab, a trusted school laboratory equipment manufacturer, is used to seal the openings of narrow mouth 250 mL Erlenmeyer flasks and other laboratory glassware that require a tighter seal or a greater degree of chemical resistance, with one hole opening for insertion of a thermometer, glass tubing or stirrer during a chemical reaction, preventing leaks, hazards and contamination.
This cylindrical stopper with a tapered bottom end is made of a premium grade SBR black rubber compound, bored with a single central hole. As a leading school laboratory equipment manufacturer, Jaincolab supplies this rubber stopper as per DEPED Guidelines to schools, colleges and laboratories across India and internationally.
Product Specifications
| Parameter | Details |
|---|---|
| Product Code | JL-LEP-10274 |
| Shape | Cylindrical, with a tapered bottom end |
| Material | Premium grade SBR black rubber compound |
| Height | 25 mm |
| Top Diameter | 32 mm |
| Bottom Diameter | 26 mm |
| Hole Diameter | 5 mm |
| Number of Holes | 1 (one) |
| Dimension Tolerance | ±0.5 mm on height, top and bottom diameter |
| Hardness | 40 ± 5 Duro |
| Guideline Compliance | As per DEPED Guidelines |
Key Features
- Seals narrow mouth 250 mL Erlenmeyer flasks and other laboratory glassware
- Tapered cylindrical shape for a snug, leak-proof fit
- Premium grade SBR black rubber compound for chemical resistance
- Bored with a single 5 mm hole for a thermometer, glass tubing or stirrer
- Tight dimensional tolerance of ±0.5 mm for a reliable seal
- 40±5 Duro hardness for a secure yet workable grip
- Supplied as per DEPED Guidelines
Why Choose Jaincolab
Jaincolab is a trusted school laboratory equipment manufacturer and supplier of laboratory glassware accessories to schools, colleges and laboratories across India and internationally. Explore related essentials such as the Rubber Stopper, the Flask Erlenmeyer Borosilicate Narrow Mouth, the Glass Tubing Long, and the Cork Borer, or browse the full Laboratory Equipment Products range.
Applications
| Application Area | Use Case |
|---|---|
| School Chemistry Labs | Sealing narrow mouth 250 mL Erlenmeyer flasks during reactions and titrations |
| Reaction Set-ups | Fitting a thermometer, glass tubing or stirrer through the single bored hole |
| General Laboratory Use | Preventing leaks, hazards and contamination during chemical reactions |
| Distillation and Heating Set-ups | Providing a tight, chemical-resistant seal while allowing instrument insertion |
Frequently Asked Questions
Q1: What is the Rubber Stopper for Erlenmeyer Flask 1 Hole used for?
A1: It is used to seal the openings of narrow mouth 250 mL Erlenmeyer flasks and other laboratory glassware, with one hole for a thermometer, glass tubing or stirrer, preventing leaks, hazards and contamination.
Q2: What material is the stopper made of?
A2: It is made of a premium grade SBR black rubber compound.
Q3: How many holes does the stopper have?
A3: It has one (1) hole, 5 mm in diameter, for inserting a thermometer, glass tubing or stirrer.
Q4: What are the dimensions of the stopper?
A4: It has a height of 25 mm, a top diameter of 32 mm, and a bottom diameter of 26 mm, with a dimensional tolerance of ±0.5 mm.
Q5: What is the hardness of the rubber?
A5: It has a hardness of 40±5 Duro.
Request a Quote
For pricing, bulk orders or custom requirements on the Rubber Stopper for Erlenmeyer Flask 1 Hole or any other laboratory glassware accessory from Jaincolab, Request a Quote from our team.
