Stainless Steel Oil level sight glass
Material Body: Stainless steel 304,Stainless steel 304L,Stainless Steel 316,Stainless steel 316L
O-Ring: Viton,FKM,FPM,NBR, Aramid gasket，Silicone Rubber,and Copper seal
Glass Thickness: 2mm to 5 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:-30'C to 220'C
Pressure Range: 5-120 Bar(0.5MPa to 12 MPa).
Thread type:NPT,NPTF,UNC,UNF,Metric and BSP(G thread)
Size： Below you will get the size you wanted.Another size is okay.OEM are welcome.