Glass Tube, Soda-Lime, 7mm OD, 0.9mm Wall x 29"

One 29" length of soda-lime glass tubing.

Tubes are guaranteed to fuse reliably (without leaving stresses after annealing) with the other soda-lime glass tubing we carry. Our Dumet wire also provides a reliable glass-to-metal seal against this glass.

We can also provide glass tubing in arbitrary lengths, as well as custom soda-lime or borosilicate glass items (please inquire).

Tubes are packed securely and shipped in thick kraft mailing tubes. We will combine shipping for multiple lengths and diameters in the most secure and economical way.

• Material: Soda-Lime Glass (Schott AR-Glas®; Hydrolitic Class 3)
• Outside Diameter: 7mm ±.1
• Wall Thickness: .9mm ±.02
• Length: 29" ±.1 (750mm ±2.5)
• Ends: Fire-Polished or Ground
• Max. Straightness Error: .8mm / 1000mm
• Max. Longitudinal Stress: 4.5MPa
• Coefficient of Thermal Expansion: 9.1 · 10^-6K^-1
• Transformation Temperature: 525°C
• Annealing Point: 530°C
• Softening Point: 720°C
• Working Point: 1,040°C
• Chemical Composition:

  SiO2 69%	B2O3 1%	K2O 3%	Al2O3 4%
  Na2O 13%	BaO 2%	CaO 5%	MgO 3%

• Meets: ISO 719 (Hydrolitic Glass), DIN 12 116 (Acid glass) and ISO 695 (Alkali Glass) for chemical resistance