White Schnappringk Appen ND11 made of polyethylene, with hole 6 mm with nose ring septum Natural Rubber/TEF temperature-resistant from – 40 & deg C to + 120 & deg C Ideal for multiple injections due to limitations in photography and the inevitable differences in good lock re-sealable characteristics: Standard Closure for GC and HPLC thickness: 1, 0 Mm