What is the blue goop on iNS/iNX?
When servicing a Polara iNS or iNX push button, you may notice a blue substance inside electrical connectors or around internal components. This material is dielectric grease, sometimes informally referred to as the "blue grease" or "blue goop."
What Is Dielectric Grease?
Dielectric grease is a non-conductive protective compound applied during manufacturing to help protect electrical connections from environmental conditions.
The grease serves several important purposes:
- Helps prevent moisture intrusion
- Reduces corrosion on electrical contacts
- Protects connections from dirt, dust, and contaminants
- Improves long-term reliability in outdoor environments
- Helps maintain connector performance over time
Because pedestrian push buttons are installed outdoors and exposed to varying weather conditions, dielectric grease provides an additional layer of protection for critical electrical connections.
Can the Blue Grease Be Removed?
Yes. If some of the dielectric grease is accidentally removed during maintenance, troubleshooting, or installation, it will not damage the push button or prevent normal operation.
The grease is intended as a protective measure and is not required for the electrical circuit to function. The iNS and iNX push buttons will continue to operate normally if a portion of the grease is wiped away or displaced during service.
Should I Remove It?
In general, there is no need to remove the dielectric grease during routine maintenance.
If access to a connector or component requires moving some of the grease, this is acceptable. However, whenever possible, leave the remaining grease in place so it can continue providing protection against moisture and corrosion.
Will Removing It Affect Bluetooth Connectivity?
No. The dielectric grease has no impact on Bluetooth communication, button programming, or operation through the Polara Field Service (FS) App.
If you are experiencing connectivity issues with the FS App, the cause is typically related to Bluetooth settings, permissions, location services, or device compatibility—not the presence or absence of dielectric grease.