[roach-commuter]

I recently acquired an old , used Sun E450. The left side panel which covers the main logic boards and cpus is coated in a black thick foam/sponge which has now turned into a black goop and if you touch it it will stick onto your fingers. I have had similar experiences in the past also with another SUN , an E250. Anybody knows what is the best way to handle this? Can I remove it without the fear or overheating ? Is it there for heat or for 'noise-canceling' purpose? Any recommendations on how to clean it up? Thanks!