Rubber bushings lubricant for an old EP-7 II

[lsyrkin]

I am fixing an old EP-7 II. I downloaded a Service Manual that is very helpful. Now I am ready to assemble the keybed but I need to lube the rubber key bushings. The manual listed Floil g-424f lube that is nowhere to find. Can someone recommend a replacement for this lube? The bushing material looks like pretty hard rubber but it might be a kind of plastic. I just don't want to damage it with incorrect grease.
Thank you in advance.