SG-511 FIRE RATED SIGHT GLASS CIRCLE 1 1/2" round 1/8" thick
SG-511 FIRE RATED SIGHT GLASS CIRCLE 1 1/2" round 1/8" thick
Normal Stock Item
The SG‑511 fire‑rated sight glass is a durable, high‑temperature inspection window designed for HVAC, furnace, and combustion‑chamber applications. Its 1‑1/2" round diameter and 1/8" thick glass provide a clear, heat‑resistant viewing port for monitoring flame presence, burner operation, and internal system conditions.
Key Features
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1‑1/2" round sight glass
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1/8" thick fire‑rated glass
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High‑temperature resistant
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Provides clear visibility into burner or combustion chamber
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Ideal for furnace, boiler, and HVAC inspection ports
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Compatible with Slipnut SN‑500 and Gasket G‑181 (as noted in your listing)
Typical Applications
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Furnace burner inspection
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Boiler sight ports
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HVAC combustion chambers
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Flame observation windows
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Service and maintenance visibility points
Specifications
| Attribute | Value |
|---|---|
| Model | SG‑511 |
| Diameter | 1‑1/2" |
| Thickness | 1/8" |
| Material | Fire‑rated glass |
| Shape | Round |
| Compatible Hardware | SN‑500 Slipnut, G‑181 Gasket |
SG-511 SIGHT GLASS CIRCLE
Use 1 1/2" SLIPNUT SN-500
Gasket G-181