Pressure-Rated Borosilicate Glass Tube
3-1/2" OD, 3-1/16" ID, 4" Long



Fabrication | Annealed |
OD | 3 1/2" |
OD Tolerance | -0.109" to 0" |
ID | 3 1/16" |
Wall Thickness | 7/32" |
Wall Thickness Tolerance | -0.0313" to 0.0313" |
Length | 4" |
Length Tolerance | -0.031" to 0.031" |
Edge Fabrication | Ground |
Maximum Pressure | 60 psi |
Temperature | |
Minimum | Not Rated |
Maximum | 150° F |
Color | Clear |
Clarity | Clear |
Coefficient of Thermal Expansion | 1.81 × 10^-6 /°F |
Density | 0.08 lb/in³ |
Material | Borosilicate Glass |
Hardness | Knoop 418 HK 0.1 |
Material Composition | |
Aluminum Oxide | 1% to 8% |
Boron Trioxide | 1% to 20% |
Potassium Oxide | 0% to 8% |
Silicon Dioxide | 70% to 87% |
Sodium Oxide | 0% to 15% |
Modulus of Elasticity | 63 kN/mm² |
Performance | Pressure Rated |
Refractive Index | 1.47 |
Shape | Round Tube |
Thermal Conductivity @ Temperature | 8.3 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F |
Country of Origin | United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | Not Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 700232.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
These short glass tubes can be used as glass bowls in oil dispensers. Borosilicate glass resists clouding and pitting and is highly chemical resistant. With a low rate of thermal expansion, it stays dimensionally stable during changes in temperature.
The information in this 3-D model is provided for reference only.

























