GrandMfg® Aluminum oil and liquid level sight glass window 

Material Body:   Aluminum 6061 T6/Aluminum 6063

Finish: aluminum natural and aluminum oxidized color/ Anodizing color.

Seal: Viton/FKM/FPM,NBR, Aramid gasket,Teflon and Copper seal

Glass Thickness: 2mm to 8 mm

Reflectors: Stainless Steel 304 Reflector

  (Any type you can chose with reflector or without Reflector,  You also can add float ball.)

Glass Type: Natural Glass,Tempered Glass and Borosilicate Glass 

Resist Tempreature Range:-40'C to 180'C

(Different seal have diferent temperature range)

Pressure Range:  5-50 Bar(0.5MPa to 5 MPa).

Thread type:NPT,NPTF,UNC,UNF,UNEF,Metric and BSP(G thread)

Size： Below you will get the size you wanted.Another size is okay.OEM are welcome.

Application:  Pump,Receivers,HydraulicTanks,Gearboxes,Speed Reducer,Gear unit,Compressor,blower and Power Transimission