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Certified DIN 7080 Sight Glass Disc | High-Pressure Borosilicate Glass up to 200 Bar
DIN 7080 sight glass discs are manufactured from thermally toughened borosilicate glass 3.3 for demanding industrial observation applications. Featuring excellent thermal shock resistance, chemical durability, and pressure performance, they are widely used in pressure vessels, reactors, boilers, pipelines, and process equipment. Standard DIN dimensions and custom-engineered solutions are available with EN 10204 3.1 certification.
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Technical data
DIN 7080 Borosilicate Sight Glass Disc Overview
DIN 7080 sight glass discs are specially designed for industrial process observation applications requiring reliable visibility and stable performance under pressure and temperature fluctuations.
Compared with ordinary industrial glass, borosilicate glass 3.3 offers excellent thermal shock resistance, chemical durability, and mechanical strength, making it suitable for demanding operating environments.
Our sight glass products are manufactured with precision grinding and polishing processes to ensure dimensional accuracy, smooth sealing surfaces, and long-term reliability.
Custom dimensions, thicknesses, and pressure designs are available according to project requirements.
DIN 7080 Borosilicate Sight Glass Disc— Technical Data
| Parameter | Value / Standard |
|---|---|
| Execution Standard | DIN 7080-2005 · EN 10204-3.1 certificate supplied as standard |
| Operating Temperature | -100 °C to +280 °C |
| Thermal Shock Resistance | ≥ 230 °C |
| Pressure Ratings (Standard) | 10 · 16 · 25 · 40 bar |
| Pressure Ratings (Special) | Up to 200 bar — available in high-pressure special dimensions |
| Bending Strength | Tempered: >160 N/mm² · Nominal: >35-50 N/mm² |
| Coefficient of Thermal Expansion | ≤ 5.0 × 10⁻⁶ K⁻¹ |
| Hydrolytic Resistance | DIN ISO 719: HBG 1 |
| Acid Resistance | DIN ISO 695: A2 |
| Surface Quality | No bubbles, stripes, and inclusions |
Cross-section drawing
Dimensions — DIN 7080 Borosilicate Sight Glass Disc
| Standard dimensions according to DIN 7080 | Special dimensions in reference to DIN 7080 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Dimension | Name | Permissible pressure in bar | MAXOS® product code | LUMIGLAS® product code | Dimension | Name | Permissible pressure in bar | MAXOS® product code | LUMIGLAS® product code |
| Ø 45 x 10 mm | din7080-40 | 40 | 2071554 | LMX2071554 | Ø 24 x 10 mm | din7080-150 | 150 | 2071640 | LMX2071640 |
| Ø 45 x 12 mm | din7080-50 | 50 | 2071556 | LMX2071556 | Ø 30 x 12 mm | din7080-150 | 150 | 2071622 | LMX2071622 |
| Ø 50 x 10 mm | din7080-25 | 25 | 2071558 | LMX2071558 | Ø 30 x 15 mm | din7080-200 | 200 | 2071533 | LMX2071533 |
| Ø 50 x 12 mm | din7080-40 | 40 | 2071561 | LMX2071561 | Ø 31.6 x 12.75 mm | din7080-150 | 150 | 2071598 | LMX2071598 |
| Ø 60 x 10 mm | din7080-16 | 16 | 2071560 | LMX2071560 | Ø 33 x 14 mm | din7080-150 | 150 | 2071557 | LMX2071557 |
| Ø 60 x 12 mm | din7080-25 | 25 | 2071562 | LMX2071562 | Ø 34 x 17 mm | din7080-200 | 200 | 2071552 | LMX2071552 |
| Ø 60 x 15 mm | din7080-40 | 40 | 2071563 | LMX2071563 | Ø 40 x 10 mm | din7080-40 | 40 | 2071624 | LMX2071624 |
| Ø 63 x 10 mm | din7080-16 | 16 | 2071566 | LMX2071566 | Ø 40 x 12 mm | din7080-50 | 50 | 2071555 | LMX2071555 |
| Ø 63 x 12 mm | din7080-25 | 25 | 2071567 | LMX2071567 | Ø 44 x 10 mm | din7080-40 | 40 | 2071603 | LMX2071603 |
| Ø 63 x 15 mm | din7080-40 | 40 | 2071569 | LMX2071569 | Ø 44 x 12 mm | din7080-50 | 50 | 2071564 | LMX2071564 |
| Ø 80 x 12 mm | din7080-16 | 16 | 2071573 | LMX2071573 | Ø 55 x 6.5 mm | din7080-6 | 6 | 2071626 | LMX2071626 |
| Ø 80 x 15 mm | din7080-25 | 25 | 2071575 | LMX2071575 | Ø 55 x 10 mm | din7080-25 | 25 | 2071559 | LMX2071559 |
| Ø 80 x 20 mm | din7080-40 | 40 | 2071576 | LMX2071576 | Ø 60 x 20 mm | din7080-95 | 95 | 2071604 | LMX2071604 |
| Ø 100 x 15 mm | din7080-16 | 16 | 2071578 | LMX2071578 | Ø 63 x 8 mm | din7080-8 | 8 | 2071565 | LMX2071565 |
| Ø 100 x 20 mm | din7080-25 | 25 | 2071579 | LMX2071579 | Ø 65 x 10 mm | din7080-12 | 12 | 2071629 | LMX2071629 |
| Ø 100 x 25 mm | din7080-40 | 40 | 2071580 | LMX2071580 | Ø 65 x 10 mm | din7080-40 | 40 | 2071606 | LMX2071606 |
| Ø 125 x 15 mm | din7080-10 | 10 | 2071581 | LMX2071581 | Ø 70 x 12 mm | din7080-16 | 16 | 2071568 | LMX2071568 |
| Ø 125 x 20 mm | din7080-16 | 16 | 2071582 | LMX2071582 | Ø 70 x 15 mm | din7080-25 | 25 | 2071570 | LMX2071570 |
| Ø 125 x 25 mm | din7080-25 | 25 | 2071583 | LMX2071583 | Ø 75 x 12 mm | din7080-16 | 16 | 2071607 | LMX2071607 |
| Ø 135 x 25 mm | din7080-25 | 25 | 2071644 | LMX2071644 | Ø 80 x 10 mm | din7080-10 | 10 | 2071571 | LMX2071571 |
| Ø 150 x 20 mm | din7080-16 | 16 | 2071586 | LMX2071586 | Ø 86 x 12 mm | din7080-10 | 10 | 2071610 | LMX2071610 |
| Ø 150 x 25 mm | din7080-16 | 16 | 2071587 | LMX2071587 | Ø 90 x 10 mm | din7080-8 | 8 | 2071572 | LMX2071572 |
| Ø 150 x 30 mm | din7080-25 | 25 | 2071588 | LMX2071588 | Ø 92 x 10 mm | din7080-8 | 8 | 2071625 | LMX2071625 |
| Ø 175 x 20 mm | din7080-10 | 10 | 2071589 | LMX2071589 | Ø 94 x 12 mm | din7080-8 | 8 | 2071671 | LMX2071671 |
| Ø 175 x 25 mm | din7080-16 | 16 | 2071590 | LMX2071590 | Ø 95 x 10 mm | din7080-6 | 6 | 2071694 | LMX2071694 |
| Ø 175 x 30 mm | din7080-25 | 25 | 2071591 | LMX2071591 | Ø 95 x 15 mm | din7080-16 | 16 | 2071574 | LMX2071574 |
| Ø 200 x 20 mm | din7080-8 | 8 | 2071592 | LMX2071592 | Ø 100 x 10 mm | din7080-7 | 7 | 2071642 | LMX2071642 |
| Ø 200 x 25 mm | din7080-10 | 10 | 2071593 | LMX2071593 | Ø 100 x 12 mm | din7080-10 | 10 | 2071644 | LMX2071644 |
| Ø 200 x 30 mm | din7080-16 | 16 | 2071594 | LMX2071594 | Ø 105 x 10 mm | din7080-10 | 10 | 2071662 | LMX2071662 |
| Ø 250 x 25 mm | din7080-8 | 8 | 2071595 | LMX2071595 | Ø 110 x 12.5 mm | din7080-16 | 16 | 2071674 | LMX2071674 |
| Ø 250 x 30 mm | din7080-10 | 10 | 2071596 | LMX2071596 | Ø 110 x 15 mm | din7080-25 | 25 | 2071613 | LMX2071613 |
| Ø 265 x 30 mm | din7080-8 | 8 | 2071628 | LMX2071628 | Ø 113 x 10 mm | din7080-10 | 10 | 2071672 | LMX2071672 |
| Ø 115 x 10 mm | din7080-10 | 10 | 2071612 | LMX2071612 | |||||
| Ø 120 x 10 mm | din7080-4 | 4 | 2071611 | LMX2071611 | |||||
| Ø 120 x 10 mm | din7080-15 | 10 | 2071630 | LMX2071630 | |||||
| Ø 120 x 18 mm | din7080-16 | 16 | 2071663 | LMX2071663 | |||||
| Ø 125 x 30 mm | din7080-40 | 40 | 2071584 | LMX2071584 | |||||
| Ø 130 x 15 mm | din7080-10 | 10 | 2071643 | LMX2071643 | |||||
| Ø 135 x 15 mm | din7080-8 | 8 | 2071615 | LMX2071615 | |||||
| Ø 140 x 15 mm | din7080-8 | 8 | 2071666 | LMX2071666 | |||||
| Ø 150 x 10 mm | din7080-2 | 2 | 2071664 | LMX2071664 | |||||
| Ø 150 x 15 mm | din7080-8 | 8 | 2071585 | LMX2071585 | |||||
| Ø 160 x 20 mm | din7080-12 | 12 | 2071617 | LMX2071617 | |||||
| Ø 170 x 15 mm | din7080-5 | 5 | 2071645 | LMX2071645 | |||||
| Ø 170 x 20 mm | din7080-10 | 10 | 2071670 | LMX2071670 | |||||
| Ø 210 x 25 mm | din7080-10 | 10 | 2071621 | LMX2071621 | |||||
| Ø 250 x 20 mm | din7080-4 | 4 | 2071673 | LMX2071673 | |||||
KEY FEATURES
Thermal Stability
High resistance to thermal shock for extreme temperature environments
High Mechanical Strength
Suitable for pressure-loaded industrial systems
Chemical Resistance
Stable performance in corrosive chemical environments
Excellent Transparency
Clear visibility for process monitoring
Precision Manufacturing
Accurate dimensions and polished sealing surfaces
Custom Design Support
OEM / ODM customization available
Custom Manufacturing Service
We provide tailor-made solutions according to drawings or technical requirements.
- Custom diameter
- Custom thickness
- Special pressure design
- Edge polishing
- Optical finishing
- OEM / ODM support
- Custom packaging
TYPICAL APPLICATIONS
- Pressure Vessels
- Chemical Reactors
- Boilers & Steam Systems
- Pipeline Sight Glass Assemblies
- Pharmaceutical Equipment
- Food & Beverage Processing
- Industrial Observation Ports
FAQ
A: The standard material is thermally toughened Borosilicate Glass 3.3, known for its excellent thermal and chemical resistance.
A: Yes, based on drawings or specifications.
A: DIN 7080 borosilicate sight glass is suitable for temperatures up to approximately 280°C under standard operating conditions.
A: Can DIN 7080 sight glass be used under pressure?
A: Yes. EN 10204 3.1 certificates, material test reports, dimensional inspection reports, and traceability documents are available upon request.
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