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DURAN® Premium GL45 Teflon PFA Screwcap, -196℃+260℃, Autoclavable<br>With PTFE Coated Silicone Seal & Pouring Ring, Ideal for High-temp & Chemical Resistance DURAN® Premium GL45 Teflon PFA Screwcap, -196℃+260℃, Autoclavable<br>With PTFE Coated Silicone Seal & Pouring Ring, Ideal for High-temp & Chemical Resistance