Glas-Col 108B (LD-4B) Lead Donut Flask Stabilizer

Prevent flotation mishaps and secure smaller, delicate vessels with the genuine Glas-Col Lead Donut flask stabilizer. This small-footprint stabilizing weight is specifically engineered to weight down micro-glassware and micro-vessels in water baths, ensuring your critical lower-volume chemical or biological mixtures remain safe, upright, and stable.

Features:

Patented "Split-Ring" Design: The open, flexible C-shape configuration allows you to slide the weight directly around flask necks, side-arm tubulations, and micro-glass setups where standard closed rings simply will not fit.

Cushioned Surface Protection: Encased in a thick, vibrant red PVC coating that completely seals the heavy lead center. This protective chemical-resistant layer ensures your glass is shielded from thermal shocks and impact scratches, while preventing direct lead exposure.

Compact Stability: Lowering the center of gravity of compact, top-heavy setups prevents tipping from water bath currents, magnetic stirring mechanisms, or physical bumps.

Specifications:

Core Material: High-density pliable lead

Exterior Coating: Protective liquid-dipped red PVC (Vinyl)

Inside Diameter (ID): 3.5 cm

Net Weight: 0.45 kg (approx. 1.0 lb)

Glassware Compatibility:

Volumetric Flasks: 25 mL to 50 mL

Erlenmeyer / Boiling Flasks: Smaller capacity micro-glassware setups

Test Tubes / Small Vials: Providing stable base weighting when slipped over tube bodies