STOPPERS RUBBER ONE HOLE BOTTOM DIA 33MM

Best quality red rubber.  shore hardness in range 46-55.  Bottom diameter moulded on top face.  Resistant to dilute acids, alkalis and ammonia.

• Bottom Diameter: 33mm
• Top Diameter: 38.5mm
• Length: 39mm
• Temperature Range: -30°C - 70°C
• Hole Diameter: 5mm
• Pack of 10

Size 33 stoppers are ideal to use with Economy NM Flasks 250mL, Pyrex HD NM Conical Flasks 1000mL, Pyrex Flat/Round Bottom NN Flasks 1000mL, simax NM Flasks 250-500mL and simax WM Flasks 250mL.

Please note: Extreme care must be used when inserting glass into the holes in rubber stoppers.