Description
Solid glass stoppers with closed bottom and taper ground inner joint. These stoppers are used to close glassware items such as flasks, cylinders, funnels.
• Solid plug type
• With sealed bottom and vertical penny head
• With 24/40 inner joint
• Borosilicate 3.3 glass
• Conforms to ASTM E438 Type 1 Class A standard
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