Why do you say that ?
Graham
Ian is trying to tell you that silicone grease is an insulator and is
not suitable for use on switch contacts.
Silicone grease was banned for use anywhere near telephone exchange
relays back in the 1960's because it was discovered that the grease
"migrated" from the point of application and eventually onto the relay
contacts, which then refused to pass signals. Silicone grease should
never be used on switches or switch contacts for this reason.