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    73 Products

    Easy-View Oil-Level Indicators

    Image of ProductInUse. Front orientation. Liquid-Level Gauges. Easy-View Oil-Level Indicators.
    Made with clear, shatter-resistant plastic, these indicators don't require a shield to protect them like other oil-level indicators, so you can check your hydraulic fluid or oil level from any angle. They’re often found on gear boxes, crank cases, and other reservoirs. These indicators mount from the outside of your tank. The vent prevents pressure buildup, which can affect the level displayed. Within the vent, there is a filter for keeping out particles as small as table salt. Unthread the vent to clean its filter or to replace it with your own vent, plug, fitting, or sensor. These indicators also have adjustable rings for marking levels critical to your system.
    Screw In
    Overall
    Ht.
    Window
    Ht.
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Fitting Material
    Window
    Material
    For Use With
    Features
    Includes
    Each
    Copolyester
     
    3/8 NPT Male Thread
    3 3/4"1 7/8"65 psi @ 70° F-40 to 200SteelCopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N11000000
    6 3/4"4 7/8"65 psi @ 70° F-40 to 200SteelCopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1200000
    9 3/4"7 7/8"65 psi @ 70° F-40 to 200SteelCopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1300000
    12 3/4"10 7/8"65 psi @ 70° F-40 to 200SteelCopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1400000
    18 3/4"16 7/8"65 psi @ 70° F-40 to 200SteelCopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N15000000
     
    1/2 NPT Male Thread
    3 13/16"1 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1600000
    6 13/16"4 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1700000
    9 13/16"7 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1800000
    12 13/16"10 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N1900000
    18 13/16"16 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N21000000
     
    3/4 NPT Male Thread
    3 13/16"1 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N2200000
    6 13/16"4 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N2300000
    9 13/16"7 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N2400000
    12 13/16"10 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N2500000
    18 13/16"16 7/8"65 psi @ 70° F-40 to 200304 Stainless Steel
    		CopolyesterAlcohol-Based Solvents, Diesel Fuel, Hydraulic Fluid, Oil, Salt Water, Water3-Micron Filter, UV Resistant, VentLevel Rings3891N26000000
     

    High-Visibility Sights

    Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window. They also have a reflector that makes dark liquid easy to see, especially in low-light conditions.
    Brass with Glass Window
    Image of Product. Front orientation. Sights. High-Visibility Sights.
    Brass sights have good corrosion resistance.
    For Dark Liquids
    Pipe
    Size
    Window
    Dia.
    Hex
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Each
    NPTF Male
     
    With Indicator Ball
    3/8
    		7/16"3/4"100 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K71000000
    3/8
    		7/16"3/4"415 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7800000
    1/2
    		9/16"7/8"100 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7200000
    1/2
    		9/16"7/8"250 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7900000
    3/4
    		3/4"1 1/8"60 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7300000
    3/4
    		3/4"1 1/8"200 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K8100000
    1
    		15/16"1 7/16"60 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7400000
    1
    		15/16"1 7/16"100 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K8200000
    1 1/4
    		1 1/8"1 3/4"60 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K8300000
    1 1/4
    		1 3/16"1 3/4"25 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7500000
    1 1/2
    		1 3/8"2"50 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K8400000
    1 1/2
    		1 7/16"2"25 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K7600000
    2
    		1 7/8"2 1/2"10 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K77000000
    2
    		1 7/8"2 1/2"20 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		3277K85000000
     
    Steel with Glass Window
    Image of Product. Front orientation. Sights. High-Visibility Sights.
    UN/UNF (SAE Straight) Thread—UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
    For Dark Liquids
    Pipe
    Size
    Thread
    Size
    Window
    Dia.
    Hex
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Specs. Met
    Each
    NPT Male
     
    With Fused Window and Indicator Ball
    1/2
    		—1/2"1"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K54000000
    1
    		—1"1 3/8"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K5800000
    1 1/4
    		—1 1/4"1 3/4"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K6300000
    1 1/2
    		—1 1/2"2"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K6500000
    2
    		—2"2 1/2"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K6700000
     
    NPTF Male
     
    With Fused Window and Indicator Ball
    3/8
    		—3/8"3/4"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K5200000
    3/4
    		—3/4"1"125 psi @ 70° F-40 to 250Water, Hydraulic Fluid, Diesel Fuel——3277K5600000
     
    UN/UNF (SAE Straight) Male
     
    With Indicator Ball
    —3/4"-16
    		9/16"7/8"75 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		SAE J1926/33277K8700000
    —1 1/16"-12
    		3/4"1 1/4"75 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		SAE J1926/33277K8800000
    —1 5/16"-12
    		15/16"1 1/2"75 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		SAE J1926/33277K8900000
    —1 7/8"-12
    		1 7/16"2"20 psi @ 70° F-40 to 180Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		SAE J1926/33277K9100000
     

    Easy-View High-Pressure Oil-Level Indicators

    Check the level of hydraulic fluid or oil in your pressurized system from any angle. These indicators are made of clear, shatter-resistant plastic, so they don't require a shield for protection as in other oil-level indicators. Mount them from the outside of your tank.
    Screw In
    Image of Product. Front orientation. Contains Annotated. Liquid-Level Gauges. Easy-View High-Pressure Oil-Level Indicators.
    Window
    Connection
    Ctr.-to-Ctr.
    Overall
    Ht.
    Ht.
    Dia.
    Body
    Wd.
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Fitting
    Material
    Seal
    Material
    Window
    Material
    For Use With
    Each
    Nylon
     
    1/2"-20 UNF Male Thread
    3"3 7/8"1 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K16000000
    5"5 7/8"3 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K2100000
    6"6 7/8"4 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K1100000
    7"7 7/8"5 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K1200000
    8"8 7/8"6 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K1300000
    10"10 7/8"8 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K1400000
    12"12 7/8"10 5/16"13/16"1 1/8"125 psi @ 70° F-40 to 225Aluminum
    		Buna-N
    		Nylon
    		Hydraulic Fluid, Oil1192K1500000
     

    Flexible Easy-View Liquid-Level Indicators

    Bend these flexible indicators around the contours of your hydraulic fluid, oil, or water tank. Because their plastic resists shattering, they don’t need a protective shield like other liquid-level indicators, so you can check your tank’s level from any angle. Use them in pressurized applications, such as hydraulic systems where overflow is a concern. They mount from the outside of your tank.
    Screw In
    Image of Product. Front orientation. Contains Annotated. Liquid-Level Gauges. Flexible Easy-View Liquid-Level Indicators.
    Connection
    Ctr.-to-Ctr.
    Overall
    Ht.
    Window
    Ht.
    Body
    Wd.
    Bend
    Radius
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Fitting
    Material
    Seal
    Material
    Window
    Material
    For Use With
    Each
    Aluminum
     
    1/2"-20 UNF Male Thread
    3"3 3/4"1 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K13000000
    5"5 3/4"3 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K1500000
    6"6 3/4"4 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K1600000
    7"7 3/4"5 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K1700000
    8"8 3/4"6 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K1800000
    10"10 3/4"8 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K1900000
    12"12 3/4"10 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K2200000
    14"14 3/4"12 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K2400000
    16"16 3/4"14 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K2600000
    18"18 3/4"16 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K2800000
    20"20 3/4"18 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K2900000
    22"22 3/4"20 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K4200000
    24"24 3/4"22 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K4400000
    30"30 3/4"28 1/2"15/16"3 1/4"30 psi @ 70° F35 to 165Aluminum
    		Buna-N
    		Vinyl PlasticHydraulic Fluid, Oil, Water3280K4900000
     

    Easy-View All-Plastic Sights

    Image of Product. Front orientation. Sights. Easy-View All-Plastic Sights.
    Machined from one piece of stain- and impact-resistant plastic. They have a domed window so you can view tank contents from multiple angles.
    Plastic with Plastic Window
    Pipe
    Size
    Window
    Dia.
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Each
    NPT Male
     
    With One-Piece Construction
    1/2
    		7/8"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T23000000
    3/4
    		1 1/8"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2400000
    1
    		1 3/8"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2500000
    1 1/4
    		1 3/4"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2600000
    1 1/2
    		2"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2700000
    2
    		2 1/2"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2800000
     

    Easy-View Sights

    View tank contents from multiple angles through the plastic domed window.
    Zinc-Plated Steel with Plastic Window
    Image of Product. Front orientation. Sights. Easy-View Sights, Zinc-Plated Steel with Plastic Window.
    Zinc-plated steel sights have a shatter-resistant window.
    Pipe
    Size
    Window
    Dia.
    Hex
    Size
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Seal
    Material
    Each
    NPT Male
    3/4
    		1"1 1/4"10 psi @ 70° F0 to 160Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		1128K3000000
    1
    		1"1 1/2"10 psi @ 70° F0 to 160Water, Hydraulic Fluid, Diesel FuelNeoprene
    		1128K400000
    1 1/4
    		1 1/4"1 7/8"10 psi @ 70° F0 to 160Water, Hydraulic Fluid, Diesel FuelNeoprene
    		1128K500000
    1 1/2
    		1 5/8"2 1/8"10 psi @ 70° F0 to 160Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based)Buna-N
    		1128K600000
     
    Plastic with Plastic Window
    Image of Product. Front orientation. Sights. Easy-View Sights, Plastic with Plastic Window.
    Plastic sights have an impact-resistant window and brass threads.
    Pipe
    Size
    Window
    Dia.
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Each
    NPT Male
    1/4
    		3/8"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T21000000
    3/8
    		1/2"65 psi @ 70° F-40 to 180Hydraulic Fluid6406T2200000
     
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