Rubber Stopper #6

The #6 rubber stopper is roughly 25mm (1") tall, only $0.80 for one with discounts for volume and is included with the following glassware in discounted bundles with reduced freight.

• 32x200mm extra large test tubes, rubber stoppers, 50 each.
• 500ml Erlenmeyer flasks, rubber stoppers, 6 each.
• 250ml florence boiling flasks, rubber stoppers, 6 each.
• 500ml florence boiling flasks, rubber stoppers, 6 each.

The #6 rubber stopper measures 27.5x32x26mm (1 1/16x1 1/4x1", height-top-bottom) & fits 150, 250, 500ml erlenmeyer & 250 & 500ml boiling flasks. In addition to our larger 250 & 500ml boiling and erlenmeyer flask, the #6 rubber stopper can be used on any bottle with an opening of roughly 1.25".