Choose from our selection of sight glass, including sights, liquid-level indicators, and more. Same and Next Day Delivery.

Choose from our selection of sight glass valves, including level indicators, build-your-own level indicators, and more. Same and Next Day Delivery.

Choose from our selection of water sight glass, including sights, liquid-level indicators, and more. Same and Next Day Delivery.

Replace existing gauge glass or combine with valves and guard rods to build your own level indicator. Cut to size with a glass tube cutter (not included). Glass with a red line emphasizes the liquid level so …

Choose from our selection of glass sights, including sights, shatter-resistant sights, and more. Same and Next Day Delivery.

Choose from our selection of sight tubes, including oil-level indicators, tubular gauge glass, and more. Same and Next Day Delivery.

Choose from our selection of hydraulic fluid sight glass, including sights, liquid-level indicators, and more. Same and Next Day Delivery.

Choose from our selection of level sight glass, including oil-level indicators, build-your-own level indicators, and more. Same and Next Day Delivery.

Choose from our selection of sight gauges, including high-pressure oil-level indicators, oil-level indicators, and more. Same and Next Day Delivery.

These bowls come with an O-ring to ensure a tight seal. They have either a clear bowl or a sight glass so you can monitor the liquid level inside. Check the manufacturer series on your filter to ensure …