oil guage-to-pipe leather seal, dash bulb question

[RPVanLuchene@lbl.gov]

This seal on my oil guage is shot (black-rimmed gauges). I see it is 
not avail at TRF, part #54902. Anyone know of a good substitute, or of 
a vendor that may carry this part? 

I got a couple 24V 3.3W bulbs with my dash light bulb kit from LBCarCo 
along with the mostly 12V 2.2W ones that the Bentley calls for. Is it 
OK to use these 3W bulbs or will it screw up the electric system. 

Thanks,
Ryan
71 TR6