Pressure-Rated Borosilicate Glass Disc
Annealed, 3-1/2" Diameter, 3/4" Long
2-D PDF
000000 each
8475K71
In stock
8475K71
000000 each
Each
Select a compatible file type: Parasolid
Available for Solidworks 2017 or newer.
Fabrication | Annealed |
Diameter | 3 1/2" |
Diameter Tolerance | -0.015" to 0.015" |
Length | 3/4" |
Length Tolerance | -0.031" to 0.031" |
Edge Fabrication | Ground |
Maximum Pressure | 175 psi |
Temperature | |
Minimum | Not Rated |
Maximum | 445° F |
Military Specification | MIL-G-47033 |
Color | Clear |
Certification | Mil. Spec. |
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 | Rod, Disc |
Thermal Conductivity @ Temperature | 1.2 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 | REACH (EC 1907/2006) (06/25/2025, 250 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 700719.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Additional Specifications |
Commonly used as sight glass. Also called Pyrex and Schott glass, borosilicate glass resists clouding and pitting and is highly chemical and heat 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.