GrandMfg® Oil Sight glass, oil level indicator, liquid sight glass, sight window, viewports
Body material: aluminum, brass 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: 125 PSIG
MOQ: 2000 Pecs each size
Delivery time: 20 days.
Different company have different requirements, OEM Service is welcome.