Glassware Catalog

Flask Accessories- Sigma-Aldrich Glassware Catalog


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On this page:
The Aldrich flask throneBIBASE rubber support ringsCork flask support rings


The Aldrich flask throne





Provides safe, hands-free support for round-bottom flasks sizes 10 to 22L. A slotted hole provides secure support while tipping flask joint downward to dump contents.
19 L x 19 W x 10in. H.


  • Prevents flask breakage, loss of product, and chemical exposure
  • For benchtop use or inside fume hoods to transfer product from flask to bottles or trays
  • Pays for itself with the cost of just one broken flask
  • Chemical resistantLDPE

Z41,156-6


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BIBASE rubber support rings

Reversible; can also be stacked upon each other. Three sizes provide six different diameters for round-bottom flasks ranging from 50 to 6,000mL. Excellent adhesion to glass prevents slippage and also offers thermal and electrical insulation. Available in two rubber types.

Black natural rubber • usable at temperatures from -20 to 70°C (dry heat), -20 to 120°C (moist heat) and has excellent chemical resistance.

Blue silicone
• usable at temperatures from -20 to 200°C. Withstands repeated high temperature or radiation. Non-toxic, biologically neutral.


Flask size (mL)
Black natural rubber
Catalog Number
Blue silicone
Catalog Number
50 - 500
500 - 2,000
2,000 - 6,000

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Cork flask support rings

With internal bevel.

Size (mm)
I.d. x o.d.

Catalog Number
30 x 80
60 x 110
90 x 140
120 x 170
150 x 210
180 x 230


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