Nylog is a viscoelastic compound made from POE oil, designed to lubricate and seal HVAC and refrigeration components.
It’s also one of the most polarizing topics on Refrigeration Technologies‘ social media accounts. While it has long been a trusted product among HVAC-R professionals due to its versatility and reliability, we want to address some of the most common misconceptions.
Nylog Myths:
It’s not a glue: Nylog doesn’t act as an adhesive.
It doesn’t harden or solidify: It remains a flexible, viscoelastic compound.
It won’t contaminate refrigeration systems: Nylog is fully compatible with all system components and won’t interfere with system performance.
It’s not an internal sealant: Nylog should not be used to patch or repair internal leaks. Its primary function is to prevent leaks at connection points and lubricate moving parts to reduce wear and tear.
What is Nylog Made of?
Nylog is a viscoelastic compound designed to lubricate and seal various components of HVAC and Refrigeration systems.
Nylog Blue: Nylog Blue is formulated from refrigeration-grade lubricants, specifically derived from synthetic ester oils. Commonly used in refrigeration and air conditioning systems with refrigerants like R-134a, R-404A, R-407C, R-410A, and others. It’s ideal for systems using ester and PAG oils and is A2L compatible, making it suitable for newer low-GWP refrigerants.
Nylog Red: Nylog Red is composed of refrigeration-grade lubricants, derived from mineral oil, making it perfect for legacy systems. Designed for refrigeration systems using mineral oil or alkylbenzene oil, such as older systems with refrigerants like R-22.
How to Apply it?
Flares: Apply Nylog on the face and seat/backside of the flare to prevent binding during torquing, ensuring a smooth and tight seal.
Gaskets and O-rings: Nylog serves as an excellent lubricant and sealant, ensuring these components function optimally and are easy to service.
Pipe Threads: Use Nylog on all pipe threads within refrigeration systems to enhance sealing and prevent leaks.
See all the applications for Nylog here.
How Much Should You Use?
A little goes a long way with Nylog. You only need a small drop, about the size of a drop from an eye-dropper, to cover the desired area.
Nylog’s Versatility:
Nylog is useful beyond HVAC systems, including:
Preventing Thread Seizure: When applied to threads, Nylog prevents binding and seizing, making future disassembly easier.
Protecting O-rings: Applying Nylog to O-rings helps maintain their shape and elasticity, prolonging their lifespan.
Ensuring Proper Torque: Nylog reduces friction during assembly, ensuring accurate torque readings and preventing over-tightening or under-tightening of connections.
We also offer Nylog White however, this variant is not intended for refrigeration or air conditioning systems. Instead, it’s approved for use in heating systems, natural gas piping, plumbing, and drinking water systems.