Sight Glass Borosilicate Sight Glass Round High Temperature Resistant Glass Boiler Mirror Pipeline Flange Valve Observation Lens 50-250mm

This high temperature resistant borosilicate sight glass is perfect for observing fluid levels or flow in a boiler, pipeline, or valve. It boasts a sturdy round shape and is available in sizes ranging from 50-250mm. Its durable construction ensures long-lasting use and accurate observation.