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Rubber Stopper for Erlenmeyer Flask 1 Hole Manufacturer,Supplier and Exporter in India

Rubber Stopper for Erlenmeyer Flask 1 Hole

Product Code : JL-LEP-10274

The Rubber Stopper for Erlenmeyer Flask 1 Hole (SKU JL-LEP-10274) seals narrow-mouth 250 mL Erlenmeyer flasks. This 1-hole stopper for Erlenmeyer flask use is a tapered cylinder of premium grade SBR black rubber, 25 mm high with a 32 mm top and 26 mm bottom diameter, bored with one 5 mm hole for a delivery tube, thermometer or glass rod. Its hardness of 40 ± 5 Duro gives a firm seal, 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, one 5 mm hole, ±0.5 mm tolerance and 40 ± 5 Duro.

Product Rubber Stopper for Erlenmeyer Flask 1 Hole
SKU 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)
Tolerance ±0.5 mm on height, top and bottom diameter
Hardness 40 ± 5 Duro
Specification reference As per DepEd guidelines

Applications of the 1-hole stopper for Erlenmeyer flask

The stopper is used when a conical flask needs a single outlet or probe. Typical uses are:

  • Fitting a delivery tube to collect gas from a reaction flask
  • Holding a thermometer in a flask
  • Sealing a flask while leaving a vent
  • Setting up simple fermentation or respiration activities

Scope of supply and ordering

The listing covers one-hole rubber stoppers for 250 mL Erlenmeyer flasks. Flasks 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?
One 5 mm hole.

What are its dimensions?
25 mm high, 32 mm top diameter and 26 mm bottom diameter.

Related products

Related items:

See all Laboratory Equipment Products, or the JaincoLab chemistry lab equipment range.

Request a quote

To order the Rubber Stopper for Erlenmeyer Flask 1 Hole, send the quantity and delivery destination through the JaincoLab contact page or email [email protected]. Buying under a laboratory tender? Use our tenders page.

Last updated: September 2026

   

Office Address

Jain Scientific Suppliers
2475-84, Hargolal Road,
Ambala Cantt, Haryana, India

[email protected]

+91-85699-09696

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