4 Pack Aluminum Oil Sight Glass For Air Compressors Pro Grade Three Quarter Inch NPT Male Threaded Liquid Level Gauge Rust Resistant Aluminum Alloy Indicator Window For Air Compressor Gearbox

Four-Pack Aluminum Oil Sight Glass for Air Compressors
✔️ 4 pcs, G3/4 threads, aluminum alloy body, tempered glass window

These oil sight glass units provide a clear window to monitor lubricant level and quality in air compressor gearboxes, tanks, and related assemblies. They mount directly on standard G3/4 threaded ports and stay corrosion-resistant in tough shop environments.

✅ Package includes 4 oil sight glass units with G3/4 threads (OD 25.7mm)
✅ Made from aluminum alloy with tempered glass for durability and visibility
✅ Provides clear oil level indication with red dot inside for water, oil, and gas observation
✅ Rated for up to 217 PSI (15 bar) and 110°C (230°F) operating temperature
✅ Weight around 54 g; color Silver; rust-resistant construction

💡 What is an oil sight glass used for in machinery and how does it help? It makes lubricant level checks handy and helps prevent downtime.

- handy visual lubricant level and contamination check for maintenance - quickly spot oil level, color changes, or moisture without shutting down - compatible with G3/4/NPT ports on compressors and gearboxes - helps extend service intervals and reduce unexpected downtime