Specification :

Oil level Sight glasses, sight gauge, sight gage, oil level indicator, liquid sight glass, sight window, view ports, male thread sight glasses
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: Meter thread, BSP, NPT
Operate Temperature: -20 cent degree to 120 cent degree
Operate Pressure: 5-10 Bar or 0.5MPa to 1 MPa.
MOQ: 2000 Pcs each size
Delivery time: 20 days.
Payment: T/ T
Usage: Pump Gearboxes, Speed Reducer, Compressor and Power Transmission.
Different company have different requirements, OEM Service is welcome.