System of Measurement System of Measurement |
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Shape Shape |
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 | Rod and Disc |
Maximum Temperature Maximum Temperature |
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Maximum Pressure Maximum Pressure |
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Material Material |
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Color Color |
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 | Clear |
Edge Fabrication Edge Fabrication |
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Clarity Clarity |
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 | Clear |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Density Density |
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Hardness Hardness |
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Modulus of Elasticity Modulus of Elasticity |
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Refractive Index Refractive Index |
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Specifications Met Specifications Met |
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Thermal Conductivity Thermal Conductivity |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Minimum Temperature Minimum Temperature |
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Pressure-Rated Borosilicate Glass Discs
- Color: Clear
- Max. Temperature: See table
- Fabrication: See table
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.
Tempered glass is stronger than annealed glass.
For technical drawings and 3-D models, click on a part number.
| Dia. | Dia. Tolerance | Lg. | Lg. Tolerance | Max. Pressure, psi | Max. Temperature, °F | Edge Fabrication | Specifications Met | Each | |
Annealed Glass | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3 1/2" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 175 | 445° | Ground | MIL-G-47033 | 0000000 | 000000 |
| 4" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 150 | 445° | Ground | MIL-G-47033 | 0000000 | 00000 |
| 4 1/2" | -0.015" to 0.015" | 3/8" | -0.031" to 0.031" | 35 | 445° | Ground | MIL-G-47033 | 0000000 | 00000 |
| 5" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 100 | 445° | Ground | MIL-G-47033 | 0000000 | 00000 |
| 6" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 75 | 445° | Ground | MIL-G-47033 | 0000000 | 000000 |
| 6 3/4" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 55 | 445° | Ground | MIL-G-47033 | 0000000 | 000000 |
| 8 3/8" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 35 | 445° | Ground | MIL-G-47033 | 0000000 | 000000 |
Tempered Glass | |||||||||
| 3 1/2" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 525 | 500° | Ground | MIL-G-2860 | 0000000 | 00000 |
| 4" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 450 | 500° | Ground | MIL-G-2860 | 0000000 | 00000 |
| 4 1/2" | -0.015" to 0.015" | 3/8" | -0.031" to 0.031" | 100 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 5" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 300 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 6" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 225 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 6 3/4" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 180 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 8 3/8" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 105 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 9" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 95 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |
| 10" | -0.015" to 0.015" | 3/4" | -0.031" to 0.031" | 85 | 500° | Ground | MIL-G-2860 | 0000000 | 000000 |