Available sizes:
1) Outer diameter: 3mm - 55mm
2) Standard length: 1, 200mm.

Main composition:
1) SiO2: 80+/-0.5%
2) B2O2: 1+/-0.2%
3) Al2O3: 2.4+/-0.2%
4) Na2O (+K2O): 4.3+/-0.2%.

Chemical properties:
1) Coefficient of mean linear thermal expansion (20C/300C):
3) 3+/-0.1 (10-6K-1)
2) Transformation temperature: 525+/-15C
3) Working point: 1, 260+/-20C
4) Softening point: 820+/-10C
5) Density at 20C: 2.23g/cm2
6) Hydrolytic resistance at 98C: ISO719-HGB1
7) Hydrolytic resistance at 121C: ISO720-HGA1
8) Acid resistance class: ISO1776-1
9) Alkali resistance class: ISO695-A2.