United Scientific Rubber Stoppers, 1-Hole, #6 Sizing, 1 lb (RST6-H)

United Scientific 1-Hole Rubber Stoppers provide reliable sealing solutions for laboratory glassware while allowing for the insertion of tubing, thermometers, or other instrumentation. Ideal for use in chemistry labs, educational settings, and research facilities, these #6 size stoppers deliver consistent performance for filtration setups, fermentation experiments, distillation apparatus, and general flask or tube closure applications requiring gas or liquid transfer.

• Size: #6 standard taper for universal compatibility with common laboratory glassware
• Configuration: Single-hole design accommodates glass tubing, thermometers, or delivery tubes
• Material: Premium natural rubber construction offers excellent flexibility and chemical resistance
• Quantity: Sold by weight in convenient 1 lb package for economical laboratory use
• Applications: Suitable for distillation, titration, gas collection, and fermentation setups
• Durability: Maintains elasticity and seal integrity through repeated use