Check the listing for details. PTFE SLEEVES 24/40 (3 pcs). Condition: New. Listed at 27.95 USD. International Buyers – Please Note: Customs and brokerage fees, import duties and taxes are not included in the item price or shipping cost. These charges are your responsibility. Please check with your country's customs office to determine what these additional costs will be prior to buying. Avogadro's Lab Supply 24/40 PTFE Joint Sleeves (3 pcs) Offered here are three 24/40 standard taper size reusable PTFE joint sleeves. Elongated cones of micro-thin virgin PTFE film tapered to fit snugly around glass joints. Approximately 0.05 mm (0.002") thick with taper of approximately 1.10 on diameter. Eliminates the need for lubrication and and prevents frozen or leaky ground joints. Can be used over a temperature range of -75 to +260 C. PTFE - Polytetrafluoroethylene aka Teflon PTFE is opaque and has the lowest coefficient of friction of any solid. All merchandise offered by Avogadro's Lab Supplyis New from the manufacturer! Don't forget to visit my for great deals on all your lab supply needs!!!