• NORMAG fine-grinding 1200 grit
• Stopcock sleeve and hollow glass stopcock keys handmade by Normag in Ilmenau, Germany, guarantees highest quality
• Durable and smooth running
• Requires less grinding grease and is much less sticky
• High vacuum tight
• Always tight, even with temperature changes
• 3-part tap safety device
• Temperature resistance:
  • + 200°C - not insulated,
  • minus temperature limited by grinding grease/sealing
• Pressure resistance: -1/+0.5 barg
• Material: borosilicate glass 3.3
• Material washer: PTFE, -100/+200°C
• Material o-ring: NBR; -40/+180°C
• Material nut: ETFE, glass fiber reinforced

Important: For glass articles which differ from the original shape after further processing, the permissible data must be determined in accordance with the technical rules and regulations.