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Carbon 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:   Aluminum, Steel, PMMA, Plastic and Brass

Finishing: Steel Zinc Plated, Steel Nickel plated, steel chrome plated.
O-Ring: Viton and NBR
Glass:  Natural Glass
Glass Thickness: 2mm to 5 mm
Glass Type: General Glass, Tempered Glass and Borosilicate Glass 
Resist Temperature Range:-30 Centigrade to 120 Centigrade.

PressureRange:  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.

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