【Good Transparent View 】The 3/4 NPT brass oil level sight glass with tempered glass which the thickness is 3mm , can provide you with a good transparent sight view and has a good has a good ability to withstand pressure, the compressor oil sight glass is also with baffle which help you can easily observe the change of medium.

【Temperature & Pressure】Air compressor oil sight glass gauge can work under 797 PSI (55 bar) and temperature 120 Celsius. The sight window is qualified to pass strict pressure and temperature tests by our factory.

【Material】The 3/4 NPT hydraulic tank sight glass is made of solid brass, the glass is borosilicate glass, The o-ring inside the oil sight glass is NBR , which is not easy to wear and burst compares to plastic material. It can work in different environment.

【Application】 The tank oil sight plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping system, automotive industries, bearing housing and gearboxes etc. The oil level indicator has good viewport for visual Inspection of water, oil and gas (WOG).

【Service】 Our QC department do 100% quality inspection on the compressor oil sight glass before delivery. We will do 100% refund if the sight plug part is defective. Your valuable suggestions and advice will be greatly appreciated by our team.