PYREX 500mL Round Bottom Boiling Flask with Short Ring Neck – 4260-500

The PYREX 500mL Round Bottom Boiling Flask is a high-quality laboratory glass flask designed for heating, boiling, mixing and chemical solution preparation. Manufactured from durable No. 7740 borosilicate glass, it features a short ring neck with a reinforced rim for improved mechanical strength and secure stopper fitting. Its round-bottom design promotes uniform heat distribution, making it suitable for educational, research and analytical laboratories. Key Features - 500mL Capacity: Suitable for laboratory heating, mixing and solution preparation. - Borosilicate Glass: Manufactured from PYREX No. 7740 glass for excellent chemical and thermal resistance. - Round Bottom Design: Promotes uniform heat distribution during controlled heating. - Short Ring Neck: Precisely tooled for consistent rubber stopper fitting. - Reinforced Rim: Enhances mechanical strength and durability. - Stopper Compatibility: Accommodates a No. 6 rubber stopper. - Heat Resistance: Normal working temperature of 230°C. - Chemical Durability: Excellent resistance to many laboratory chemicals. - Controlled Wall Thickness: Helps improve thermal shock resistance. - Reusable Construction: Suitable for repeated laboratory operations. Parameter Specification Brand PYREX Manufacturer Corning Product Code 4260-500 Product Type Laboratory Boiling Flask Nominal Capacity 500mL Material No. 7740 Borosilicate Glass Flask Shape Spherical Bottom Type Round Bottom Neck Style Short Ring Neck Top Style Ring Mouth Design Reinforced Ring Opening Rubber Stopper Size No. 6 Stopper Included No Outside Diameter Approximately 102mm Overall Height Approximately 160mm Normal Working Temperature 230°C Thermal Resistance Thermal Shock Resistant Chemical Resistance Excellent Chemical Durability Glass Colour Clear / Transparent Reusability Reusable Quantity per Pack 1 Piece Quantity per Case 1 Piece Applications Laboratory Boiling, Heating, Mixing and Solution Preparation