Bell & Gossett 118153 Circulator OilBell & Gossett 118153 circulator oil lube is a premium circulator oil designed to protect and extend the life of pumps. This 1. 5 oz bottle provides reliable pump lubrication for residential and commercial circulators and pairs with L23401 118870. Designed to reduce wear, minimize noise, and improve efficiency, this lubricant supports HVAC maintenance and home heating systems. Keep your system running smoothly with regular applications as part of

Model/Brand 100 (Part No HS-300G-PL)

Easy installation to minimize downtime

Its generous loading air gap of 1/8 to 3/16 inch helps maintain reliable discharge characteristics while maintaining safety margins

It serves as a direct replacement for compatible residential water heaters and is designed for use with Defender Safety System models PE2XR504T

helping facilities meet safety standards and reduce risk of accidental energization

Universal application: ideal for universal air pressure sensing switches across HVAC

Designed for easy installation and seamless compatibility with existing fittings

Differential: 5–50 Millibar/WC

Ground: One end

Diagnostics & protection: Fault indicators and safeguards for reliable operation

Durable construction built to endure in demanding environments

Media Handled supports air and steam