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Amazon.com: Sight Glass with Adapter-1/2"NPT High Temp Silicone Washers, Quartz Tube Homebrew Kettle Keg Sight Gauge, Directly Replace Old or Damaged Parts (Size : 16 inch) : Home & Kitchen
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11"/16"/20" Weldless Sight Gauge Tee Assembly Stainless Steel PC Tube High Temp 7/8"Hole Homebrew Kettle/Keg - AliExpress
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