Pouring ring, GLS 80, PTFE, for laboratory glass bottles with DIN thread

The material used is a special compound based on polyarylsulphone. Consequently the chemical, thermal and mechanical properties of the material are noticeably improved and matched to laboratory requirements. Thanks to the thread, the DURAN® GLS 80® bottle can be opened or closed with only a three-quarter turn. The seal, which is coated on both sides with PTFE, ensures the bottle can be tightly sealed (cap liner: Platinium-cured silicone). A matching PTFE pouring ring is also available, permitting clean, drip-free use.