VWR PTFE Thin Sleeves. 024 is used for the insertion between standard ground glass joints to eliminate the use of grease and prevent sticking. This PTFE Insert Sleeve from the expert product specialists at VWR is inert has a wall thickness of about 0.05mm and are usable to 280C (536F). For a full line of VWR glassware and labware please visit our VWR page. For more brand name glassware accessories for your research needs please visit our glassware accessories store section. Specifications for VWR PTFE Thin Sleeves 19.024 : STJoint Size: 24/40 (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Cowie products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Beakers Test Tubes Flasks & Accessories with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for VWR Beakers Test Tubes Flasks & Accessories. 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 VWR PTFE Thin Sleeves 19.024/ 89026-488 we carry a full complement of Beakers Test Tubes Flasks & Accessories as well as other product offerings from Cowie. We also carry a full line of VWR accessories to help meet your laboratory and scientific needs. For a complete selection of VWR Beakers Test Tubes Flasks & Accessories please visit our Cowie page. For more brand name Beakers Test Tubes Flasks & Accessories please visit our Beakers Test Tubes Flasks & Accessories store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. VWR PTFE Thin Sleeves 19.024