What are the General Features of Glass Indicator Plugs?

• It has a scratch and oil resistant glass. Sealing is achieved by attaching an Oring gasket around the glass, not on the front face edge. Therefore sealing is not affected by axial pressures.
• The gasket is not lost as it is contained in a groove. Also, this groove prevents the gasket from coming off when the plug is tightened.
• Since the gasket at the bottom is also in a channel/enclosure, it is not affected by external factors.
• Since the gaskets are inside the channel, they present a more aesthetically pleasing appearance than their counterparts.