GS15 Graded Seal Glass Rod

Available Standard Sizes

• 2mm - 4mm

Nominal length 1m

For custom sizes please contact us

Glass Composition

• SiO2 83.0
• B2O3 10.1
• AI2O3 4.9
• BaO 1.4
• CaO 0.51
• Fe2O3 0.01

Coefficient of Expansion

• 13.5-15.5 x 10-7 (temperature range 50 to 400 c)
  (control range measured on unannealed glass)

Other Properties

• Strain point 635°c
• Annealing point 740°c
• Softening point 1200°c
• Log _ 250 9.8
• Log _ 350 8.2
• Tk100 365°c

All values are nominal except for specified expansion range.