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    14 Products

    Easy-View Flanged Sights

    Check the contents of your tank from multiple angles with the domed window on these sights. The window is plastic, so it’s shatter resistant. To mount these sights, fasten their extended flange to tank walls.
    Zinc with Plastic Window
    Image of Product. Front orientation. Sights. Easy-View Flanged Sights.
    Flange
    OD
    Window
    Dia.
    Bolt Circle
    Dia.
    No. of Bolt
    Holes
    For Screw
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Each
    2 1/4"1 1/4"1 7/8"4No. 8
    		10 psi @ 70° F0 to 160Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		1128K220000000
     

    Flanged Sights

    An extended flange makes these sights easy to bolt onto tank walls. Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
    Zinc with Glass Window
    Image of Product. Front orientation. Sights. Flanged Sights.
    For Dark Liquids
    Flange
    OD
    Window
    Dia.
    Bolt Circle
    Dia.
    No. of Bolt
    Holes
    For Screw
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Each
    1 5/8"3/4"1 5/16"4No. 6
    		10 psi @ 70° F-20 to 250Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3946N16000000
    1 7/8"1"1 9/16"4No. 6
    		10 psi @ 70° F-20 to 250Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3946N17000000
    2 9/16"1 1/2"2 5/32"4No. 8
    		10 psi @ 70° F-20 to 250Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3946N1900000
     
    Zinc-Plated Steel with Glass Window
    Image of Product. Front orientation. Sights. Flanged Sights.
    For Dark Liquids
    Flange
    OD
    Window
    Dia.
    Bolt Circle
    Dia.
    No. of Bolt
    Holes
    For Screw
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Each
    2 1/4"1 1/4"1 7/8"4No. 8
    		10 psi @ 70° F-20 to 250Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3946N180000000
    3 1/8"2"2 11/16"4No. 10
    		10 psi @ 70° F-20 to 250Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3946N21000000
     

    Ultra-High-Vacuum Flanged Sights

    Image of Product. Front orientation. Sights. Ultra-High-Vacuum Flanged Sights.
    Add a window to your ultra-high-vacuum system. With a pane of glass sealed inside an ultra-high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds. Use a copper gasket (sold separately) to create a seal. Not for use with pressure.
    Window
    Bolt
    Holes
    High-Vacuum
    Flange Size
    Flange
    OD
    High-Vacuum
    Connection Type
    Max. Vacuum @ Temp.
    Dia.
    Material
    Bolt Circle
    Dia.
    No.
    of
    Dia.
    Max. Temp.,
    ° F
    Each
    304 Stainless Steel
    161 21/64"CF1× 10^-11 Torr @ 72° F5/8"Glass1 1/16"611/64"6603993N150000000
    402 3/4"CF1× 10^-11 Torr @ 72° F1 1/2"Glass2 5/16"617/64"6603993N16000000
    634 1/2"CF1× 10^-11 Torr @ 72° F2 9/16"Glass3 5/8"821/64"6603993N17000000
    1006"CF1× 10^-11 Torr @ 72° F3 35/64"Glass5 1/8"1621/64"6603993N18000000
     
    Gaskets
    Image of Product. Front orientation. Tube Fitting Gaskets.
    Each
    For Flange
    OD
    For Tube
    OD
    Specs. Met
    1-9
    10-Up
    1 21/64"3/4"ASTM B152, ASTM F689088K510000000000
    2 3/4"1 1/2"ASTM B152, ASTM F689088K5200000000
    4 1/2"2 1/2"ASTM B152, ASTM F689088K5300000000
    6"4"ASTM B152, ASTM F689088K54000000000
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