Glas-Col Hemispherical Mantles Series O Glas-Col Glass Fabric Exterior. The series O mantles are hemispherical in shape and are made of a fabric with a silicone-impregnated exterior fabric. This and the hemispherical shape allows for better vision through the glassware. The high insulation value assures that the volume of liquid contained within the mantle does not exceed the maximum temperature of the mantle when applied. For this reason Glas-Col hemispherical mantles are also often used as heater blankets. The major advantage of these mantles is that they can be placed on either side of a wide variety of glassware. For this reason they are often used as heater blankets. But they can also be used for heating single or multi-neck flasks. They can also be used for heating and protecting various other types of glassware. For this reason they are also often used as heaters in their own right. Specifications for Glas-Col Hemispherical Mantles Series O Glas-Col 100AO406 Glass Fabric Exterior : For FlaskCapacity mL: 500 Maximum FlaskDiameter cm (in.): 10.1 (4) Exterior DimensionsO.D. x H cm (in.): 13.9 x 7.6 (51/2 x 3) Weightkg (lbs.): 0.45 (1) Electrical: 115V 60Hz 270W Glas-Col No.: 100AO406 Unit: Each (500 ML) (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Glas-Col products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Laboratory Apparatus with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Glas-Col Laboratory Apparatus. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Glas-Col Hemispherical Mantles Series O Glas-Col Glass Fabric Exterior 100AO406/ 33787-141 we carry a full complement of Laboratory Apparatus as well as other product offerings from Glas-Col. We also carry a full line of Glas-Col accessories to help meet your laboratory and scientific needs. For a complete selection of Glas-Col Laboratory Apparatus please visit our Glas-Col page. For more brand name Laboratory Apparatus please visit our Laboratory Apparatus store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Glas-Col Hemispherical Mantles Series O Glas-Col 100AO406 Glass Fabric Exterior