8463 silver Conductive Grease

https://www.mgchemicals.com/products/grease-for-electronics/electrically-conductive-grease/contact-grease/

8463 is a silver-filled, silicone-based contact grease that greatly improves electrical and thermal connections under screw-type pressure. It is an ideal grease for electrical connections that lubricates, reduces contact resistance, repels moisture, inhibits corrosion, and prevents static buildup.

Use 8463 when you need a conductive lubricant that combines superior electrical contact with environmental protection. This silver conductive grease is excellent for ground connections, rotating connections, rotary switches, variable capacitors, roller inductors, roller bearings, slip rings, slide connectors and potentiometers

Features & Benefits
Silver-filled – greatly reduces electrical and thermal resistance
Improves electrical connections between irregular and pitted surfaces
Prevents arching, pitting, hotspots and welds
Inhibits corrosion
Reduces mechanical wear
Broad service temperature range of -50 to 200 °C (-58 to 392 °F)