Glas-Col Heating Mantle 250 ml 115V 180W with Power Cord

Glas-Col Series O Hemispherical Soft-Fabric Heating Mantle – 250 mL Round-Bottom Flask Capacity, 180 Watts, 115V AC (MPN: 100A O402)

Used. In great condition. 

The Glas-Col 100A O402 (commonly cataloged under laboratory distribution networks as O402 or 100AO402) is a flexible, soft-sided heating mantle engineered to provide uniform, controlled thermal transfer to 250 mL round-bottom boiling and reaction flasks. Fabricated from high-durability, chemically resistant fiberglass yarn and woven textile fabric, this hemispherical mantle cradles the lower half of single-neck and multi-neck glass vessels. This lower-body coverage delivers efficient thermal transfer up to internal operating temperatures of 450 C while maintaining complete visual clarity of the upper flask neck, fluid reflux lines, and condensation levels. Powered at 115V AC (180 Watts), it features a built-in 2-wire lead with a twist-lock connector designed to integrate with external variable voltage or proportioning temperature controllers, preventing localized hot spots and thermal shock risks on glass walls.

Technical Performance and Structural Design

• Soft Flexible Fabric Construction: Woven from high-purity fiberglass yarn, allowing the mantle body to conform closely to standard 250 mL round-bottom glass contours. This snug contact ensures optimal heat conduction across the entire vessel base without risk of physical glass stress.

• Hemispherical Low-Profile Geometry: Covers the lower 180-degree radius of the flask. This configuration provides steady, uniform heating to the boiling liquid while leaving the upper flask body and joints completely unobstructed for observation, additions, or distillation take-offs.

• Twist-Lock Electrical Connector Interface: Outfitted with a standard 2-wire cord terminated with a polarized twist-lock plug. This secure connection attaches directly to external variable auto-transformers (Variacs) or digital/analog temperature controllers, avoiding accidental power disconnections during long heating cycles.

• Space-Saving Benchtop Footprint: The soft fabric shell squeezes easily into tight ring-stand setups, specialized benchtop reactor lattices, and crowded fume hood manifolds where rigid aluminum-housed mantles are too bulky.

Product Specifications

• Catalog Number / MPN: 100A O402 (Cross-listed as O402 / 100AO402 / HM-2600)

• Manufacturer / Brand: Glas-Col, LLC

• Vessel Capacity Compatibility: 250 mL Standard Spherical Round-Bottom Flasks

• Electrical Input Rating: 115V AC, 50/60 Hz

• Power Output Rating: 180 Watts

• Maximum Internal Element Temperature: Up to 450 C (842 F)

• Housing Material Matrix: Heavy-Duty Fiberglass and Textile Outer Shell

• Regulatory Compliance: CSA Approved (115V configuration)

Key Benefits and Applications

• Chemical Synthesis and Reflux Operations: The industry-standard heating vessel for organic synthesis, solvent distillation, and reaction boiling where precise, repeatable temperature control is required.

• Elimination of Thermal Hot-Spots: Distributes thermal energy evenly across the lower hemisphere of the glass, drastically reducing the risk of thermal shock or scorching heat-sensitive organic compounds compared to open flame or direct hot plate surfaces.

• Ring Stand and Extension Support Ready: Pairs seamlessly with standard Glas-Col extension supports or ring-clamp brackets to elevate reactions to any height along a lab frame setup.

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