Comparison : |
Item # 17105-01-W, 0.55 Inch (in) View Diameter Weld Installation Sapphire Viewport Sight Glass Item # 17105-02-W, 0.94 Inch (in) View Diameter Weld Installation Sapphire Viewport Sight Glass Item # 17105-03-W, 1.94 Inch (in) View Diameter Weld Installation Sapphire Viewport Sight Glass Item # 17106-01-KF, 0.55 Inch (in) View Diameter International Organization for Standardization (ISO) Flange Sapphire Viewport Sight Glass Item # 17106-02-KF, 0.94 Inch (in) View Diameter International Organization for Standardization (ISO) Flange Sapphire Viewport Sight Glass
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