Stainless steel Oil level Sight glass, oil sight gauge, oil sight gage, oil level indicator, liquid sight glass, sight window, view ports, male thread sight glasses, domed sight glass plug, oil sight glass plugs, round observation ports, NPT sight glass windows, reservoir oil sight glass, hydraulic tank oil sight glass
Material
Body:   SS304, SS304L, SS316, SUS316L SUS304, SUS304L, SUS316, SUS316L
O-Ring: Viton and NBR
Glass Thickness: 2mm to 5 mm
Glass Type: Natural Glass, Tempered Glass and Borosilicate Glass 
Resist Temperature Range: -30 Centigrade to 120 Centigrade.

Finishing: No Anti-explosion and withstand high temperature and high pressure.

Pressure Range:  5-10 Bar or 0.5MPa to 1 MPa.

Connections: NPTF, NPT, UNC, UNF, Metric and BSP (G thread)

Size:M10X1, M16X1.5,M20X1.5, ,M27X1.5,M33X1.5,
G 3/8,G 1/2,G 3/4,G 1    NPT 3/8, NPT 1/2,NPT 3/4,NPT 1

MOQ: 2000 Pcs each size

Delivery time: 20 days.

The body is Stainless Steel, the glass is tempered glass, the O ring is viton seal gasket, W/ Thread Cap Protection

The oil level can be read correctly in the middle by the sight glass.

The sight glasses allow for visual inspection of oil and water in tanks, air compressor, gearbox, gear cases, bearing houses and mixers

Usage: Pump, Thin-wall container, Radiator, Hydraulic reservoir, receivers, Gearboxes, Speed Reducer, Compressor and Power Transmission.