Boltigen 1/2 NPT Hex Head Domed Oil Sight Glass, Brass Bulls Eye Sight Glass Liquid Level Gauge Oil Indicator Window for Air Compressor Gearbox Tank








Key features
- •【Temperature & Pressure】1/2 NPT Air compressor dome oil sight glass gauge can work under 725 PSI (50 bar) and temperature 300 Celsius. The sight window is qualified to pass strict pressure and temperature tests by our factory.
- •【Good Transparent View 】The 1/2 NPT brass dome 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 domed oil sight glass also help you can easily observe the change of medium.
- •【Material】The 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, 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 compressor oil sight glass before delivery. We will do 100% refund if the bull eye sight glass is defective. Your valuable suggestions and advice will be greatly appreciated by our team.
Boltigen 1/2 NPT Hex Head Domed Oil Sight Glass, Brass Bulls Eye Sight Glass Liquid Level Gauge Oil Indicator Window for Air Compressor Gearbox Tank
List Price: $23.26$20.93DEALYou Save: $2.33 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 24, 2026In Stock (30)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection







