round observation ports, NPT sight glass windows, reservoir oil sight glass, hydraulic tank oil sight glass
Body material: aluminum, brass, PC, PPMA and steel
Glass: Real glass 2 mm to 5 mm thickness.
O Ring: Viton O rings
Size: M10 to M42, 1/2 inch to 2 inch
Thread Type: NPTF, NPT, UNC, UNF, Metric and BSP (G thread)
Operate Temperature: -20 Celsius degree to 120 Celsius degree
Operate Pressure: 5-10 Bar or 0.5MPa to 1 MPa.
MOQ: 2000 Pcs each size
Delivery time: 20 days.
Usage: Pump, Thin-wall container, Radiator,Hydraulicreservoir, receivers,Gearboxes, Speed Reducer, Compressor and Power Transmission.
Different company have different requirements, OEM Service is welcome.