Glas-Col Hemispherical Mantles Series O Glas-Col 0 Silicone-Impregnated Glass Fabric Exterior. Constructed of quartz fabric not a fibrous material the exterior surface of this Lab Apparatus from Glas-Col has a uniform impregnation of viscous silicone oil. This provides an even more complete impregnation and therefore greater chemical compatibility than the widely used borosilicate glass. Glas Col Hemispherical Flask Mantles can withstand extremely high heat (towards 450 C or 840 F) without damage. The high-quality build and precision construction of Glas-Col Mantles give them a consistently excellent heat retention and chemical resistance over many years of service. Specifications for Glas-Col Hemispherical Mantles Series O Glas-Col 0616700229 Silicone-Impregnated Glass Fabric Exterior : For FlaskCapacity mL: 2000 Maximum FlaskDiameter cm (in.): 17(63/4) Exterior DimensionsO.D. x H cm (in.): 22.1 x 11.7 (83/4 x 45/8) Weightkg (lbs.): 0.86 (1.9) Electrical: 115V 60Hz 500W Glas-Col No.: 616700229 Unit: Each (2 L) (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 Silicone-Impregnated Glass Fabric Exterior 0616700229/ 33787-136 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 0616700229 Silicone-Impregnated Glass Fabric Exterior