Rubber Stopper for Erlenmeyer Flask 2 Holes
Product Code : JL-LEP-10275
The Rubber Stopper for Erlenmeyer Flask 2 Holes (SKU JL-LEP-10275) seals narrow-mouth 250 mL Erlenmeyer flasks while taking two tubes. This 2-hole stopper for Erlenmeyer flask set-ups is premium grade SBR black rubber, tapered, 25 mm high with a 32 mm top and 26 mm bottom diameter, bored with two 5 mm holes, so a thistle funnel and a delivery tube can pass through together. Hardness is 40 ± 5 Duro and dimensions are held to ±0.5 mm. JaincoLab supplies it as per DepEd guidelines.
Specifications
The stopper is specified by shape, material, size, holes and hardness: tapered SBR black rubber, 25 mm high, 32 mm top and 26 mm bottom diameter, two 5 mm holes, ±0.5 mm tolerance and 40 ± 5 Duro.
| Product | Rubber Stopper for Erlenmeyer Flask 2 Holes |
| SKU | JL-LEP-10275 |
| 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 | 2 (two) |
| Tolerance | ±0.5 mm on height, top and bottom diameter |
| Hardness | 40 ± 5 Duro |
| Specification reference | As per DepEd guidelines |
Applications of the 2-hole stopper for Erlenmeyer flask
The stopper is used in gas preparation and similar set-ups that need two openings. Typical uses are:
- Fitting a thistle funnel and a delivery tube for gas preparation
- Adding liquid to a sealed flask while gas is collected
- Holding a thermometer and a delivery tube together
- Building wash-bottle or trap arrangements
Scope of supply and ordering
The listing covers two-hole rubber stoppers for 250 mL Erlenmeyer flasks. Flasks, funnels and tubing are separate items.
Frequently asked questions
Which flask does this stopper fit?
Narrow-mouth 250 mL Erlenmeyer flasks.
How many holes does it have?
Two, each 5 mm.
What is it made of?
Premium grade SBR black rubber, 40 ± 5 Duro.
Related products
Related items:
- Rubber Stopper for Erlenmeyer Flask 1 Hole
- Flask Erlenmeyer Borosilicate Narrow Mouth
- Glass Tubing Long
- Distilling Flask Borosilicate
Browse Laboratory Equipment Products or the JaincoLab chemistry lab equipment range.
Request a quote
To order the Rubber Stopper for Erlenmeyer Flask 2 Holes, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Institutions and contractors buying under a tender can also reach us via the tenders page.
