uxcell oil liquid level gauge sight glass g1/2 male threaded aluminum alloy air compressor fittings with o-ring

Thread Type: G1/2(Approx OD 21mm); Overall Size : 26 x 17mm/ 1″ x 0.67″ (D*T). | MATERIAL: The main body is made of aluminum alloy, which is not easy to wear and burst compares to plastic material. It can work in high temperature environment. | GOOD SEALING: The sealing is achieved with an O-ring on the periphery. O-ring is made of rubber material, which is resistant to high temperature, corrosion and oxidation. It can provide good sealing performance and prevent oil leakage during use. | WIDELY APPLICATION: Oil Level Sight Glass used widely to check the oil level of the pump in the air compressor. The actual liquid level position screw oil in the oil tank can be placed on the tank sight glass to see, to judge from the outside to run defenders screw oil meets the operating condition. | NOTE: Get your air compressor shut down and pressure relief when change oil level sight glass.