Halder Oil Sight Glasses | Precision Fluid Monitoring Solutions | Freer Tool

Halder oil sight glasses—also called oil level sight glasses or oil level indicators—are used to provide a quick visual check of fluid level in gearboxes, reservoirs, hydraulic units, and lubricated equipment (application dependent). A properly selected sight glass helps maintenance teams confirm oil level at a glance, supporting preventive maintenance and reducing the risk of running equipment underfilled or overfilled. Sight glasses are commonly used on industrial machinery where reliable level monitoring and leak-resistant sealing are important (application dependent).

Oil-sight glasses are fittings used to monitor liquid levels in containers without overpressure. They are commonly referred to as level indicators or oil level glasses.

The product range includes two versions from stock:

• Oil-sight glass without oil level mark
• Oil-sight glass with oil level mark