5 Pcs Oil Sight Glass 1/4” 1/2” 3/4” 3/8” 1” Male Threaded Stainless Steel Sight Glass Oil Liquid Level Gauge Oil Indicator


  • 【Air Compressor Sight Glass】1/2 NPT Stainless steel oil sight glass gauge can work under pressure 800 PSI (55 bar) and temperature -30-120C(-22-248F). The oil sight window is qualified to pass strict pressure and temperature tests by our factory.
  • 【Good Transparent View 】Seal up tight with no leaks.It can work all day and stop the drip.Very clear sight glass and has the markings for oil level.The correct oil level.
  • 【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 1/2 NPT oil sight plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping system, automotive industries and mixers etc. The oil level indicator has good viewport for visual Inspection of water, oil and gas (WOG).
  • 【Temperature & Pressure】Stainless Steel Oil Sight Glass Gauge Can Work Under Pressure 435 Psi (30 Bar) And Temperature -30-120c(-22-248f).



The level gauge sight glass are made of light material,good toughness,high strength,corrosion resistance,oxidation resistance.Great fit and stopped the leaks.Fits perfectly on my compressor no more leaks.Widely used in machine tools,air compressors,hydraulic presses,reducer gears and other mechanical equipment.

Material:Aluminum alloy
Thread size:1/4” 1/2” 3/4” 3/8” 1” inches

Package Content:
1 x 1/4” Oil Sight Glass
1 x 1/2” Oil Sight Glass
1 x 3/4” Oil Sight Glass
1 x 3/8” Oil Sight Glass
1 x 1”Oil Sight Glass

Additional information

Item Weight

‎0.317 ounces

Package Dimensions

‎4.06 x 2.28 x 1.3 inches

Country of Origin


Item model number


Power Source


Included Components

‎Oil Sight Glass

Batteries Included?


Batteries Required?




Date First Available

October 20, 2023