1” NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window Hydraulic Tank Sight Glass For


  • 【Temperature & Pressure】1” NPT stainless steel oil sight glass gauge can work under pressure 800 PSI (55 bar) and temperature -30-120C(-22-248F). The sight window is qualified to pass strict pressure and temperature tests by our factory.
  • 【Good Transparet View 】The stainless steel oil level sight glass with tempered glass, can provide you with a good transparent sight view , the compressor oil sight glass is also with baffle and red ball which help you can easily observe the change of medium.
  • 【Material】The hydraulic tank sight glass is made of solid stainless steel 304, 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 stainless steel oil sight plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping system, automotive industries, lab equipments, bearing housing and mixers 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 stainless steel 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.


1inch NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass
Product name:Oil level sight glass
Product color:Silver
Product material:Tempered glass, stainless steel
Product model:1-11.5NPT
Thread Pitch: 2.209mm
– Effective in most operating environments
– A clear view of oil color, clarity and accumulation of water or other contaminates
– Accommodating different fluids and adapting to various levels of pressure
– Easy installation and a longer service life
1pc 1” MNPT oil sight glass
Please noted that NPT Thread Size is a nominal pipe size and it does not represent the actual diameter. Please look the size chart for the specific thread diameter.

From the brand

Additional information

Part Number


Item Weight

‎4.6 ounces

Package Dimensions

‎2.48 x 2.05 x 1.57 inches


‎1'' NPT Male



Batteries Included?


Batteries Required?




Date First Available

June 24, 2021